2010-2017 Audi A1 SUV Starter, Generator and Cruise Control User Manual
MyCarUserManual.com
USER MANUALS FOR EVERY MAKE & MODEL

Starter, Generator and Cruise Control for Your Audi A1 SUV 2010-2017

Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
27 – Starter, Generator and Cruise Control  
1
Battery  
(Edition 08.2019)  
⇒ “1.1 General Information”, page 1  
⇒ “1.2 Battery Types”, page 1  
⇒ “1.3 Warnings and Safety Precautions”, page 3  
⇒ “1.4 Battery Post/Terminal”, page 5  
1.1  
General Information  
To guarantee a long service life, the Battery - A- must be checked,  
serviced and maintained as described in this manual.  
The Battery - A- supplies the power to start the engine. The Bat‐  
tery - A- also acts as a power reserve for the entire vehicle  
electrical system.  
Note  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Refer to Self Study Program.  
WARNING  
Risk of injury. Follow all warning messages and Safety Pre‐  
cautions.  
⇒ “1.3 Warnings and Safety Precautions”, page 3  
Caution  
In order to prevent damage to the Battery - A- or vehicle, ob‐  
serve  
the  
battery  
type  
information.  
Refer  
to  
⇒ “1.2 Battery Types”, page 1 .  
1.2  
Battery Types  
General Information  
⇒ “1.2.1 Battery A with Visual Indicator”, page 1  
⇒ “1.2.2 EFB-Battery”, page 2  
⇒ “1.2.3 AGM-Battery”, page 3  
1.2.1  
Battery - A- with Visual Indicator  
Caution  
The following described Batteries - A- are maintenance-free  
Batteries - A- . Do not remove any of the labels on the battery  
and do not add distilled water. Perform only a visual inspection.  
Note the chapter on battery testing. Refer to  
⇒ “2 Battery, Checking”, page 6 .  
1. Battery  
1
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Maintenance-free Battery - A- with fluid electrolyte (wet battery).  
Caution  
Do not remove any of the labels on the battery and do not add  
distilled water. Perform only a visual inspection. Note the chap‐  
ter  
on  
battery  
testing.  
Refer  
to  
⇒ “2 Battery, Checking”, page 6 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
This Battery - A- has a visual indicator. The colors in the visual  
indicator show the Battery - A- charge and electrolyte level.  
Visual indicator color display, checking. Refer to  
⇒ “2.3 Visual Indicator Color Display, Checking”, page 9 .  
1.2.2  
EFB-Battery  
Caution  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
The following described Batteries - A- are maintenance-free  
Batteries - A- . Do not remove any of the labels on the battery  
and do not add distilled water. Perform only a visual inspection.  
Note the chapter on battery testing. Refer to  
⇒ “2 Battery, Checking”, page 6 .  
Maintenance-free Battery - A- with fluid electrolyte (wet battery).  
Caution  
Do not remove any of the labels on the battery and do not add  
distilled water. Perform only a visual inspection. Note the chap‐  
ter on battery testing.  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
The Battery - A- is installed in certain Stop/Start vehicles due to  
special requirements. “EFB” is written on the battery cover to  
identify this battery.  
2
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
“EFB” stands for »Enhanced Flooded Battery« (enhanced wet  
battery).  
An EFB battery may only be replaced with another EFB battery.  
This Battery - A- has a visual indicator. The colors in the visual  
indicator show the Battery - A- charge and electrolyte level.  
Visual indicator color display, checking. Refer to  
⇒ “2.3 Visual Indicator Color Display, Checking”, page 9 .  
Note  
“EFB” batteries are being used in certain Audi A1 and Audi A3  
models from August 2011.  
1.2.3  
AGM-Battery  
Caution  
The following described Batteries - A- are maintenance-free  
Batteries - A- . Do not remove any of the labels on the battery  
and do not add distilled water. Perform only a visual inspection.  
Note the chapter on battery testing. Refer to  
⇒ “2 Battery, Checking”, page 6 .  
Maintenance-Free Battery - A- with Fixed Electrolyte (AGM bat‐  
tery).  
Lead-acid battery, where the electrolyte is fixed in an absorbent  
glass mat (AGM). The Battery - A- is closed and equipped with  
breather valves.  
“AGM” is the English abbreviation for Absorbent Glass Mat.  
These Batteries - A- cannot have a visual indicator due to the fixed  
electrolyte. AGM is on the Battery - A- to identify it.  
When replacing an AGM battery, another AGM battery must be  
installed.  
1.3  
Warnings and Safety Precautions  
⇒ “1.3.1 Dangers When Working with Batteries”, page 3  
⇒ “1.3.2 Battery Safety Label”, page 5  
1.P3ro.t1ected by copDyriaghnt. Cgopeyirnsg foWr privhatee onr coWmmoerrcikalipnurgposwes,iitnhparBt oraintwtehorlei,eissnot  
RepceormgitnteidzuinnlgessaanudthoPrisreedvbey AnUtiDnIgAGR. AisUkDsI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Batteries - A- present risks. Read the warnings on the Battery -  
A- label, in the Owner's Manual and in ELSA to prevent these  
risks.  
1. Battery  
3
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
WARNING  
♦ Personnel instructed in protection, such as a trainee or an  
apprentice, may only perform work on vehicle Batteries -  
A- under supervision of technical personnel, for example,  
a master automotive technician or a master automotive  
electrician.  
♦ Acid has strong corrosive properties. If Batteries - A- are  
handled inappropriately, there is a risk that personal injury  
may result from exposure to harmful electrolyte influen‐  
ces. Therefore, suitable remedies for acid damage must  
be kept readily available. Soapy water would be a suitable  
remedy.  
♦ If electrolyte drips out from the Battery - A- , skin can be  
burned by acid and the vehicle may be affected by acid  
erosion and corrosion. It is a possibility that safety-related  
vehicle components can be damaged.  
♦ When charging and when resting after charging, explosive  
gas is present. In extreme cases, if the Battery - A- is han‐  
dled inappropriately, the emitted gases may cause the  
battery to explode.  
♦ Replace a Battery - A- if the visual indicator has »no color  
or is bright yellow«. They may not be tested or charged  
and jump starting may not be used. There is a risk of ex‐  
plosion during testing, charging or jump starting.  
♦ Producing sparks by sanding, welding, cutting and open  
flames, (also from smoking near the battery) is forbidden.  
Producing sparks through electrostatic discharge must al‐  
so be avoided. Always touch the vehicle body before  
touching the Battery - A- .  
♦ Only perform Battery - A- procedures in suitable and well-  
ventilated locations.  
WARNING  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
Pollution risk.  
♦ Old batteries require special dispowsiathlr.eTsphecet yto cthoe ncotrareicntnepsos io‐f information in this document. Copyright by AUDI AG.  
sonous lead (Pb) and sulfuric acid.  
♦ Follow disposal requirements, only dispose of used bat‐  
teries in suitable containers at an authorized collection  
site.  
4
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
1.3.2  
Battery Safety Label  
Safety Label on the Battery - A-  
1 - When working in the area of the Battery - A- , fire, sparks,  
open flame and smoking are prohibited. Avoid sparks when  
working with cables and electrical devices, and from elec‐  
trostatic discharge. Avoid short circuits. For this reason,  
tools should not be rested on the Battery - A- .  
2 - Wear protective eyewear when working on the Battery - A- .  
3 - Always keep acid and Batteries - A- out of the reach of chil‐  
dren.  
4 - Disposal: old batteries require special disposal. They may  
only be disposed of at a suitable collection facility and only  
in consideration of legal regulations.  
5 - Do not dispose of old batteries in household waste.  
6 - When handling Batteries - A- , there is a risk of explosion.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
Batterpyer-mAitte-dcuhnleasrsgaiunthgorpiserdobdyuAcUeDsI AaG.hAUigDhI AlyGedoxepslnoost givuaeragntaeesormacicxe‐pt any liability  
ture.  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
7 - Always follow instructions on the Battery - A- , in the Parts  
Catalog and in the Owner's Manual.  
8 - Danger of burns: battery acid is severely corrosive, there‐  
fore protective gloves and eyewear must be worn when  
working on the Battery - A- . The Battery - A- must not be  
tipped because acid may spill from the ventilation openings.  
1.4  
Battery Post/Terminal  
Caution  
In order to prevent damage to the battery terminals and battery  
posts, observe the following:  
♦ Never use force to attach the battery terminals by hand.  
♦ Do not apply grease to battery posts.  
♦ The battery terminal clamps should be mounted so that  
the battery terminal sits flush with the clamp or protrudes  
out of it.  
♦ After tightening the battery terminal clamps to the speci‐  
fied torque, the threaded connections must not be tight‐  
ened again.  
Terminal clamp tightening specification. Refer to ⇒ Electrical  
Equipment; Rep. Gr. 27 ; Battery .  
1. Battery  
5
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
2
Battery, Checking  
⇒ “2.1 Test Sequence”, page 6  
⇒ “2.2 Visual Inspection”, page 8  
⇒ “2.3 Visual Indicator Color Display, Checking”, page 9  
⇒ “2.4 Battery Test with Vehicle Diagnostic Tester ”, page 11  
⇒ “2.5 Battery Tester VAS6161 ”, page 12  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
⇒ “2.6 Battery Tester with Printer VAS5097A ”, page 17  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
⇒ “2.7 Current Draw Test”, page 22  
⇒ “2.8 Battery, Checking Resting Voltage, Vehicles in Storage or  
Inventory”, page 24  
2.1  
Test Sequence  
⇒ “2.1.1 Battery, Checking, Vehicles with Battery Monitoring Con‐  
trol Module J367 or Energy Management Control Module J644  
and Data Bus On Board Diagnostic Interface J533”, page 6  
⇒ “2.1.2 Checking the Battery - Vehicles without a Battery Moni‐  
toring Control Module J367 or Energy Management Control Mod‐  
ule J644 ”, page 7  
2.1.1  
Battery, Checking, Vehicles with Battery  
Monitoring Control Module J367 or En‐  
ergy Management Control Module J644  
and Data Bus On Board Diagnostic In‐  
terface J533  
♦ In certain model series the following is responsible for moni‐  
toring the electrical system: Energy Management Control  
Module - J644- or Battery Monitoring Control Module - J367-  
in connection with the Data Bus On Board Diagnostic Interface  
- J533- ; allocation. Refer to ⇒ Wiring diagrams, Troubleshoot‐  
ing & Component locations. The battery test for these vehicles  
is performed during “Guided Fault Finding”.  
♦ If the battery test is not possible with “Guided Fault Finding”  
due to a partially or exhaustively discharged battery, the bat‐  
tery can be quickly evaluated with the help of the “battery test  
via current draw”.  
♦ Maintenance-free batteries must not be opened. Otherwise,  
the warranty is voided.  
Caution  
It is not possible to check the battery using “Guided Fault Find‐  
ing” through MY 2010 during the following procedure, even if  
the vehicle has a Battery Monitoring Control Module - J367- :  
♦ A3 from MY 2004 (8P)  
♦ TT from MY 2007 (8J)  
♦ R8 from My 2007 (42)  
Battery  
test.  
Refer  
to  
⇒ “2.1.2 Checking the Battery - Vehicles without a Battery  
Monitoring Control Module J367 or Energy Management Con‐  
trol Module J644 ”, page 7 .  
6
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Perform Tests in the Following Sequence:  
1.  
2.  
Visual inspection. Refer to  
⇒ “2.2 Visual Inspection”, page 8 .  
Check the visual indicator color display (if equipped). Refer  
to  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitt⇒ed u“n2le.s3s aVuitshouriaseldIbnydAiUcDaItAoGr. CAUoDlIoArGDdoisespnlaotyg,uaCrahnteeecokriancgce”p,t any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
page 9 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
3.  
Battery Test with Vehicle Diagnostic Tester refer to  
⇒ “2.4 Battery Test with Vehicle Diagnostic Tester ”,  
page 11 .  
2.1.2  
Checking the Battery - Vehicles without  
a Battery Monitoring Control Module -  
J367- or Energy Management Control  
Module - J644-  
Caution  
It is not possible to check the battery using “Guided Fault Find‐  
ing” through MY 2010 during the following procedure, even if  
the vehicle has a Battery Monitoring Control Module - J367- :  
♦ A3 from MY 2004 (8P)  
♦ TT from MY 2007 (8J)  
♦ R8 from My 2007 (42)  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Perform the Tests in the Following Sequence:  
1.  
2.  
Visual inspection. Refer to  
⇒ “2.2 Visual Inspection”, page 8 .  
Check the visual indicator color display (if equipped). Refer  
to  
2. Battery, Checking  
7
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
⇒ “2.3 Visual Indicator Color Display, Checking”,  
page 9 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Note  
The -VAS5097A- will no longer be used for warranty testing. Only  
the -VAS6161- is still being used.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
3.  
Battery test with:  
♦ -VAS6161- . Refer to  
⇒ “2.5 Battery Tester VAS6161 ”, page 12 .  
♦ -VAS5097A- . Refer to  
⇒ “2.6 Battery Tester with Printer VAS5097A ”, page 17 .  
4.  
Depending on the result of the battery load test, “perform  
current draw test”. Refer to  
⇒ “2.7 Current Draw Test”, page 22 .  
2.2  
Visual Inspection  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions. Refer to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Before any extensive measurements are taken, visually inspect  
the exterior of the battery, the connections, and the secure in‐  
stallation of the Battery - A- .  
Caution  
♦ An improperly secured Battery - A- can lead to damage.  
♦ Excessive vibration due to an improperly secured battery  
will reduce the battery service life, and the battery hold-  
down bracket could damage the battery housing and lead  
to electrolyte leakage.  
♦ Make sure the Battery - A- is secure. Tighten the mounting  
bolt to the tightening specification, if necessary.  
Visual Inspection Points  
♦ Damage to the battery case. Acid can leak out if the case is  
damaged. Battery acid that has leaked out can cause severe  
damage to the vehicle. Acid that has leaked onto any part of  
the vehicle should be immediately treated with acid neutralizer  
or soap solution.  
8
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
♦ Damage on the battery posts. If the battery terminals are dam‐  
aged, contact with battery terminals clamps cannot be guar‐  
anteed. When connecting the battery terminal clamps, always  
keep the tightening specification for the corresponding vehicle  
from the repair manual in mind. Refer to ⇒ Electrical Equip‐  
ment; Rep. Gr. 27 ; Battery . If the battery post clamps are not  
correctly installed and secured, the wiring may burn. Substan‐  
tial malfunctions to the electrical system are a consequence.  
Safe operation of the vehicle can no longer be guaranteed.  
2.3  
Visual Indicator Color Display, Checking  
⇒ “2.3.1 3-Color Visual Indicator, Checking, through 03/2008”,  
page 9  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
⇒ “2.3.2 2-Color Visual Indicator, Checking, from 04/2008”, page  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
10  
2.3.1  
3-Color Visual Indicator, Checking,  
through 03/2008  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Visual Indicator General Information:  
The visual indicator provides information concerning the electro‐  
lyte level and the Battery - A- charge level.  
To obtain an accurate reading, gently tap the charge indicator with  
a screwdriver handle or rock vehicle slightly. By doing this, the air  
bubbles that occur normally during battery charging (even during  
vehicle operation) that adversely affect charge indicator reading  
will be displaced. Thereby, the color indicator of the visual indi‐  
cator is more accurate.  
Note  
♦ Air bubbles can form under the visual indicator, especially if a  
Battery - A- was recharged or if the Battery - A- was charged  
while driving. These bubbles may cause the visual indicator to  
read inaccurately.  
♦ As the charge indicator is located in a single cell, the indication  
is only valid for that cell. An exact assessment of battery con‐  
dition should always be confirmed by performing battery test.  
Refer to ⇒ “2.6.3 Battery Load Test”, page 18 .  
♦ The visual indicator can be installed at various locations on top  
of the Battery - A- .  
There Are Three Possible Color Indications  
♦ »Green«: the Battery - A- is sufficiently charged.  
♦ »Black«: the Battery - A- is partially charged, the charge level  
is less than 65% or discharged.  
♦ »No color/bright yellow«: the Battery - A- must be replaced.  
2. Battery, Checking  
9
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
2.3.2  
2-Color Visual Indicator, Checking, from  
04/2008  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions. Refer to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
Visual Indicator General Information  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
The »green« visual indicator for the charge level indicator is no  
longer used for these Batteries - A- . Only »black« or »no color or  
bright yellow« are used.  
The visual indicator shows the Battery - A- electrolyte level.  
It is no longer possible to read the Battery - A- charge level using  
the visual indicator. It is necessary to perform a battery test. Refer  
to ⇒ “2.6.3 Battery Load Test”, page 18 .  
To obtain an accurate reading, gently tap the charge indicator with  
a screwdriver handle or rock vehicle slightly. By doing this, the air  
bubbles that occur normally during battery charging (even during  
vehicle operation) that adversely affect charge indicator reading  
will be displaced. Thereby, the color indicator of the visual indi‐  
cator is more accurate.  
Note  
♦ Air bubbles can form under the visual indicator, especially if a  
Battery - A- was recharged or if the Battery - A- was charged  
while driving. These bubbles may cause the visual indicator to  
read inaccurately.  
♦ As the charge indicator is located in a single cell, the indication  
is only valid for that cell. An exact assessment of battery con‐  
dition should always be confirmed by performing battery test.  
Refer to ⇒ “2.6.3 Battery Load Test”, page 18 .  
♦ The visual indicator can be installed at various locations on top  
of the Battery - A- .  
Two Visual Indicators Are Possible  
♦ »black«: the electrolyte level is OK  
♦ »No color or light yellow«: electrolyte level too low. Replace  
the Battery - A- .  
10  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
2.4  
Battery Test with Vehicle Diagnostic  
Tester  
Special tools and workshop equipment required  
♦ Vehicle Diagnostic Tester  
Note  
The Battery - A- can also be checked while it is installed without  
the connected battery charger on vehicles with Battery Monitoring  
Control Module - J367- or Energy Management Control Module -  
J644- and Data Bus on Board Diagnostic Interface - J533- using  
the Vehicle Diagnostic Tester .  
Test Prerequisites  
♦ No battery charger connected  
♦ Battery - A- is connected.  
♦ Battery temperature at least +10 °C (50 °F).  
Procedure  
Vehicle Diagnostic Tester is attached.  
– Select the Diagnostic mode and start the diagnostics.  
– Select the tab Test Plan.  
– Select Select Individual Tests and choose the following  
sequence.  
♦ Body  
♦ Electrical Equipment  
♦ 27 - Starter, voPltraotgecetedsubypcpoplyyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
♦ Electrical Compowniethnretsspect to the correctness of information in this document. Copyright by AUDI AG.  
♦ A - Battery, Checking  
The Vehicle Diagnostic Tester continues with the battery test from  
here on.  
2. Battery, Checking  
11  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
2.5  
Battery Tester - VAS6161-  
⇒ “2.5.1 General Information”, page 12  
⇒ “2.5.2 Battery Tester VAS6161 Device Description”,  
page 13  
⇒ “2.5.3 Battery Test, Performing using Battery Tester VAS6161  
”, page 13  
⇒ “2.5.4 VW Original Battery Test”, page 14  
⇒ “2.5.5 Non VW Battery Test”, page 15  
⇒ “2.5.6 Storage Maintenance, Performing”, page 15  
⇒ “2.5.7 Explanation of Test Results”, page 16  
⇒ “2.5.8 Evaluating Test Results”, page 16  
2.5.1  
General Information  
WARNING  
Risk of injury! Pay attention to all warnings and safety precau‐  
tions. Refer to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
It is not necessary to disconnect or remove the Battery - A- when  
using the Battery Tester - VAS6161- .  
The Battery TestePrro-teVctAedSb6y 1co6py1ri-ghdt.oCeopsyinngoftorppurivtastetroar cinomomnerctihalepuBrpaostetes,rinypart or in
- A- . It is working paecrmciotterdduinnlegsstoautthhoerisepdrbiny AcUipDlIeAGo.fAdUDyInAaGmdoiecscnootngudauracnt‐ee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
tivity.  
All battery types are stored in the Battery Tester - VAS6161- .  
The data can be stored on an SD card.  
The Battery Tester - VAS6161- can be updated via an interface  
or an SD card, so that all battery data from Volkswagen is always  
current.  
The integrated infrared sensor (measuring the battery tempera‐  
ture) increases the quality of the measurements.  
There is a scanner that can also be used to read the bar code on  
the Battery - A- .  
Note  
Follow the ⇒ Battery Tester - VAS6161- Operating Instructions .  
12  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
2.5.2  
Battery Tester - VAS6161- Device De‐  
scription  
-VAS6161-  
1 - Internal printer  
2 - Operating lever for the paper tray  
3 - Paper slot  
4 - Main menu display  
5 - Display with on/off-button  
6 - Connection for the battery tester cable  
7 - Slot for the SD memory card  
8 - Infrared temperature sensor  
9 - PC file transmitter  
2.5.3  
Battery Test, Performing using Battery  
Tester - VAS6161-  
Special tools and workshop equipment required  
♦ Battery Tester - VAS6161-  
WARNING  
Risk of injury! Follow all Warnings and Safety Precautions.  
Refer to ⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Testing the Battery:  
WARNING  
Do not check or charge batteries that have a visual indicator  
that is light yellow. Do not give a jump start.  
There is a risk of explosion during testing, charging or jump  
starting.  
These batteries must be replaced.  
– Turn off the ignition and all electrical equipment.  
– Battery with Visual Indicator, Checking Visual Indicator. Refer  
to  
⇒ “2.1.1 Battery, Checking, Vehicles with Battery Monitoring  
Control Module J367 or Energy Management Control Module  
J644 and Data Bus On Board Diagnostic Interface J533”, page  
6 .  
– Switch on the unit.  
– Clamp the red clamp “+” of the tester to the positive terminal.  
– Clamp the black clamp “-” on the tester to the negative termi‐  
nal.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
Notewith respect to the correctness of information in this document. Copyright by AUDI AG.  
Make sure the test clamps make good contact!  
2. Battery, Checking  
13  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Select one of the following tests:  
Note  
♦ VW original battery test: all VW original batteries are checked  
with this outside of the warranty.  
♦ Non VW battery test: all batteries from other manufactures are  
checked with this.  
♦ Storage maintenance: for batteries in storage and inventory.  
♦ VW original battery. Refer to  
⇒ “2.5.4 VW Original Battery Test”, page 14 .  
♦ Non VW battery. Refer to  
⇒ “2.5.5 Non VW Battery Test”, page 15 .  
♦ Storage maintenance. Refer to  
⇒ “2.5.6 Storage Maintenance, Performing”, page 15 .  
Note  
♦ The test is over after approximately 10 seconds.  
♦ The test results are printed out.  
♦ It is not necessary to let the tester cool down before performing  
the next measurement.  
2.5.4  
VW Original Battery Test  
Note  
♦ The printed test results can differ depending on the software  
version.  
♦ Follow the Battery Tester - VAS6161- Operating Instructions.  
WARNING  
Do not check or charge batteries that have a visual indicator  
that is light yellow. Do not give a jump start.  
There is a risk of explosion during testing, charging or jump  
starting.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
These batteries must be replaced.  
– Select “Non VW Battery Test” in the menu.  
– Select “at the battery terminal” or “at the battery jump start ter‐  
minal”.  
– Select the type of battery: “standard”, “AGM”, “2*6V” or “Gel”.  
– Select the “CCA”, “JIS”, “DIN”, “SAE”, “IEC” or “EN”.  
– Select battery value.  
– Measure the temperature. Hold the temperature sensor ap‐  
proximately 5 cm above the battery terminal until the temper‐  
ature is stable.  
– Start the test.  
14  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Print out the test report if necessary.  
2.5.5  
Non VW Battery Test  
Note  
♦ The printed test results can differ depending on the software  
version.  
♦ Follow the Battery Tester - VAS 6161- Operating Instructions.  
WARNING  
Do not check or charge batteries that have a visual indicator  
that is light yellow. Do not give a jump start.  
There is a risk of explosion during testing, charging or jump  
starting.  
These batteries must be replaced.  
– Select “Non VW Battery Test” in the menu.  
– Select “at the battery terminal” or “at the battery jump start ter‐  
minal”.  
– Select the type of battery: “standard”, “AGM”, “2*6V” or “Gel”.  
– Select the “CCA”, “JIS”, “DIN”, “SAE”, “IEC” or “EN”.  
– Select battery value.  
– Measure the temperature. Hold the temperature sensor ap‐  
proximately 5 cm above the battery terminal until the temper‐  
ature is stable.  
– Start the test.  
– Print out the test report if necessary.  
2.5.6  
Storage Maintenance, Performing  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
WARNING  
Do not check or charge batteries that have a visual indicator  
that is light yellow. Do not give a jump start.  
There is a risk of explosion during testing, charging or jump  
starting.  
These batteries must be replaced.  
– Select “storage maintenance” in the menu.  
– Connect the scanner.  
Note  
If there is no scanner, manually enter the VIN on the printed test  
results.  
– Scan the VIN.  
– Select “at the battery terminal” or “at the battery jump start ter‐  
minal”.  
2. Battery, Checking  
15  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Scan in the battery 2D code or manually select the type and  
manufacturer in the menu.  
– Measure the temperature. Hold the temperature sensor ap‐  
proximately 5 cm above the terminal connection until the  
temperature is stable.  
– Start the test.  
– Print out the test report if necessary.  
2.5.7  
Explanation of Test Results  
Note  
♦ The layout of the printed test results can vary depending on  
the software version.  
♦ The printed test results are required for warranty claims.  
1 - Type of test.  
2 - Battery test result.  
3 - Measured voltage  
4 - Measured cold start value.  
5 - Cold start nominal value set on the tester  
6 - Measured battery temperature  
7 - Batter installed location  
8 - Location of the battery terminal set at the tester  
9 - Selected battery.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
2.5.8  
Evaluating Test Results  
Evaluating the battery test results for the Warranty and Service  
Tests  
Battery Test Result  
Measure  
Battery good  
No measure on the battery  
Battery good - recharge  
Charge battery. Refer to  
⇒ “3 Battery, Charging”,  
page 25 . If necessary,  
search for the cause of the dis‐  
charging  
Perform a current draw test  
Perform a current draw test.  
Refer to  
⇒ “2.7 Current Draw Test”,  
page 22 . Charge the battery  
completely and test again. Re‐  
fer to  
⇒ “3 Battery, Charging”,  
page 25 .  
Replace the battery.  
Disconnect the battery and test  
again. The result “replace the  
battery” can occur due to a  
weak cable contact.  
Battery cell faulty - replace  
Connection, Checking  
Replace the battery.  
Connect the cable directly to  
the battery and not to the bat‐  
tery jump start terminal.  
Battery depleted  
Replace the battery.  
16  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Evaluating the Battery Test Results for the Maintenance Test  
Battery Test Result  
Battery good  
Measure  
No measure  
Charge the battery immediate‐ Fully charge the battery. Refer  
ly.  
to  
⇒ “3 Battery, Charging”,  
page 25 .  
Mark as defective  
Mark as defective.  
Tester Connection, Checking Disconnect the battery and test  
again. The result “check the  
tester connection” can occur  
because the cable contact is  
weak.  
Connection, Checking  
Connect the cable directly to  
the battery and not to the bat‐  
tery jump start terminal.  
Noises  
Wait until the measured value  
appears in the display.  
Battery depleted  
Replace the battery.  
2.6  
Battery Tester with Printer - VAS5097A-  
⇒ “2.6.1 General Information”, page 17  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device Descrip‐  
tion”, page 18  
⇒ “2.6.3 Battery Load Test”, page 18  
⇒ “2.6.4 Cold Crank Amps Table”, page 20  
⇒ “2.6.5 Battery Load Test Results”, page 21  
⇒ “2.6.6 Printed Test Results Explanations”, page 22  
⇒ “2.6.7 Test Result Evaluation”, page 22  
2.6.1  
General Information  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions. Refer to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
It is not necessary to disconnect or remove the Battery - A- when  
using the -VAS5097A- .  
The following Batteries - A- can be tested using the -VAS5097A- :  
♦ 80 to 499 A cold crank amps according to German Industry  
Standardization DIN (Deutsche Industrie Norm). Refer to 1).  
♦ 95 to 574 A cold cranking output according to IEC (Interna‐  
tional Engineering Consortium)  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
♦per1m3itt6edtuonle8s5s 5autAhorcisoedldbycArUaDnI kAiGn.gAUoDuI AtpGudtoeascncotogrudarianngteetoor aEcNcep/tSanAyEliab(ilEityu‐  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
ropäische Norm/ Standard of Automotive Engineers)  
1) Batteries - A- with cold crank amps greater than 499 A according to DIN can  
be tested with the setting for 499 A according to DIN.  
The Batteries - A- are tested by being loaded with current that  
corresponds to the starter current of a vehicle. Under this load,  
the Battery - A- is evaluated and the measured results are output  
through the printer.  
2. Battery, Checking  
17  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Note  
Read the -VAS5097A- Operating Instructions and -VAS5097A-  
Quick Reference Guide label on the -VAS5097A- and the cold  
crank amps table. Refer to  
⇒ “2.6.4 Cold Crank Amps Table”, page 20 .  
♦ -VAS5097A- device description. Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device De‐  
scription”, page 18 .  
♦ Battery load test. Refer to  
⇒ “2.6.3 Battery Load Test”, page 18 .  
♦ Cold crank amps table. Refer to  
⇒ “2.6.4 Cold Crank Amps Table”, page 20 .  
♦ Battery load test results. Refer to  
⇒ “2.6.5 Battery Load Test Results”, page 21 .  
♦ Printed test results explanations. Refer to  
⇒ “2.6.6 Printed Test Results Explanations”, page 22 .  
♦ Test result evaluation. Refer to  
⇒ “2.6.7 Test Result Evaluation”, page 22 .  
2.6.2  
Battery Tester with Printer - VAS5097A-  
Device Description  
-VAS5097A-  
1 - LED green, “Device in use”  
2 - LED red, “Device connected with terminals reversed”  
3 - LED red “Battery cannot be tested”, the Battery - A- must be  
replaced.  
4 - Start button  
5 - Cold cranking output selector switch  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
6 - ON/OFF function switch  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
7 - Sliding switch (battery hook-up to the Battery - A- /at jump  
start point)  
8 - Paper-feed -button  
9 - Printer  
2.6.3  
Battery Load Test  
Special tools and workshop equipment required  
♦ Battery Tester with Printer - VAS5097A-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Always note the TPL 2012182.  
18  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Procedure  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Note  
The Battery - A- temperature must be at least 10 °C (50 °F).  
Caution  
♦ Turn off the ignition and all electrical equipment.  
♦ Remove the key.  
– Check the visual indicator on Batteries - A- with visual indica‐  
tor. Refer to  
⇒ “2.1.1 Battery, Checking, Vehicles with Battery Monitoring  
Control Module J367 or Energy Management Control Module  
J644 and Data Bus On Board Diagnostic Interface J533”, page  
6 .  
– Switch on the -VAS5097A- . Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device De‐  
scription”, page 18 .  
– Determine the cold crank amps according to specifications on  
the Battery - A- in ampere (A) according to DIN and determine  
the -VAS5097A- adjustment range using the table. Refer to  
⇒ “2.6.4 Cold Crank Amps Table”, page 20 .  
Note  
If the Battery - A- does not state this value in DIN but rather in IEC  
or EN/SAE, then convert the value using the table (refer to  
⇒ “2.6.4 Cold Crank Amps Table”, page 20 ) or the table on the  
-VAS5097A- .  
– Set the cold crank amps with the cold crank amps selector  
switch. Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device De‐  
scription”, page 18 .  
– Set the measuring range (80 to 379 A or 380 to 499 A) using  
the ON/OFF switch. Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device De‐  
scription”, page 18 .  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Note  
Batteries - A- with cold crank amps greater than 499 A according  
to DIN can be tested with the setting for 499 A according to DIN.  
2. Battery, Checking  
19  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Connect the red terminal (+) to the positive terminal of the  
Battery - A- .  
– Connect the black terminal (-) to the negative terminal for the  
Battery - A- .  
Note  
♦ Make sure the test terminals make good contact!  
♦ Note TPL 2012182 for the -VAS5097A- .  
– Using the sliding switch, select the test clamp connection  
point. Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device De‐  
scription”, page 18 .  
1 - Direct connection to the Battery - A-  
Protected by copyright. Coe, is not  
permitted unless authorisy liability  
with respect to the corrAG.  
2 - Connection on the battery jump start terminal  
– Check if the cold crank amps indicated on the Battery - A-  
matches the selected value on the -VAS5097A- .  
– Press theStart-button. Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device De‐  
scription”, page 18 .  
The green LED lights up. Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device Descrip‐  
tion”, page 18 . The test program runs automatically. The test  
results are output through the printer. Refer to  
⇒ “2.6.5 Battery Load Test Results”, page 21 . If the -  
VAS5097A- does not start, (the LED does not come on and there  
is no print out), then charge the Battery - A- . Refer to  
⇒ “3 Battery, Charging”, page 25 .  
– Switch off the -VAS5097A- . Refer to  
⇒ “2.6.2 Battery Tester with Printer VAS5097A Device De‐  
scription”, page 18 .  
– Remove the test terminals.  
Note  
♦ The test is over after approximately 20 seconds.  
♦ The results of the test are output through the printer.  
♦ Only perform the test once. Repeating the test will not produce  
accurate results.  
♦ The -VAS5097A- needs 30 minutes to cool off before it is ready  
for the next measurement.  
2.6.4  
Cold Crank Amps Table  
Cold Crank Amps in A  
EN/ SAE  
IEC  
DIN  
136 – 177  
178 – 219  
220 – 261  
262 – 303  
304 – 345  
346 – 387  
95 – 124  
125 – 154  
155 – 184  
185 – 214  
215 – 244  
245 – 274  
80 – 104  
105 – 129  
130 – 154  
155 – 179  
180 – 204  
204 – 229  
20  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Cold Crank Amps in A  
EN/ SAE  
IEC  
DIN  
388 – 429  
430 – 471  
472 – 513  
514 – 555  
556 – 597  
598 – 639  
640 – 657  
658 – 675  
676 – 693  
694 – 711  
712 – 729  
730 – 747  
748 – 765  
766 – 783  
784 – 801  
802 – 819  
820 – 837  
838 – 855  
275 – 304  
305 – 334  
335 – 364  
365 – 394  
395 – 424  
425 – 454  
455 – 464  
465 – 474  
475 – 484  
485 – 494  
495 – 504  
505 – 514  
515 – 524  
525 – 534  
535 – 544  
545 – 554  
555 – 564  
565 – 574  
230 – 254  
255 – 279  
280 – 304  
305 –329  
330 – 354  
355 – 379  
380 – 389  
390 – 399  
400 – 409  
410 – 419  
420 – 429  
430 – 439  
440 – 449  
450 – 459  
460 – 469  
470 – 479  
480 – 489  
490 – 499. Refer to 2).  
2) Batteries - A- with cold crank amps greater than 499 A according to DIN can be tested with the setting for 499 A according to DIN.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
2.6.5  
Battery Load Test Results  
By placing the battery under a strong load during the Battery - A-  
load test, the battery voltage will be reduced.  
♦ If the Battery - A- is good, the voltage drops only to the speci‐  
fied minimum voltage.  
♦ If the Battery - A- is defective or weakly charged, the battery  
voltage will drop very quickly to below the specified minimum  
voltage.  
♦ After testing, this low voltage level is maintained for a lengthy  
period and only increases again slowly.  
♦ Only perform the test once. Repeating the test will not produce  
accurate results.  
♦ In order to be able to test another/additional Battery - A- , the  
-VAS5097A- must cool down for approximately 30 minutes for  
the test result to be correct.  
2. Battery, Checking  
21  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
2.6.6  
Printed Test Results Explanations  
1 - Measuring range set on the -VAS5097A-  
2 - Diagram, the -arrow- points to the Battery - A- status.  
3 - Test result  
4 - Battery - A- voltage during the battery load test.  
5 - Vehicle data and date. For tester to fill out.  
Note  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is no
♦ The printed test results are required for warranty claims.  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liabilit
♦ Only perwfoithrmrespthecet ttoethsetcoornreccetn.esRs eofpinefoarmtiantigontihn ethistedosctuwmeilnlt.nCootpyprirgohtdbuy cAUeDI AG.  
accurate results.  
2.6.7  
Test Result Evaluation  
Printout  
Measures  
Starting power very good  
Starting power good  
Battery - A- is OK.  
Battery - A- is OK.  
Starting power sufficient  
Evaluation performed by the  
current draw test. Refer to  
⇒ “2.7 Current Draw Test”,  
page 22 .  
Starting power insufficient  
Evaluation performed by the  
current draw test. Refer to  
⇒ “2.7 Current Draw Test”,  
page 22 .  
Starting power very insufficient Evaluation performed by the  
current draw test. Refer to  
⇒ “2.7 Current Draw Test”,  
page 22 .  
Cannot be tested  
– Charge the Battery - A-  
and perform the test again.  
Refer to  
⇒ “3 Battery, Charging”,  
page 25 .  
2.7  
Current Draw Test  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Make sure the correct charging mode is set on the battery charger  
so the current draw test is not inaccurate.  
♦ -VAS5095A- . Refer to  
⇒ “3.1.3 Battery, Charging with Battery Charger VAS5095A ”,  
page 26 .  
22  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
♦ -VAS5900- . Refer to  
⇒ “3.2 Battery Charger VAS5900 ”, page 31 .  
♦ -VAS5903- . Refer to  
⇒ “3.3 Battery Charger VAS5903 ”, page 42 .  
In order to receive an indication as quickly as possible of the bat‐  
tery condition of discharged Batteries - A- , a conclusion can be  
made during the charging process using the Battery - A- current  
draw as to whether the Battery - A- should be replaced or charged  
completely.  
Note  
In the case of the -VAS6161- , the current draw test must always  
be conducted when the test result “conduct current draw test” ap‐  
pears in the display.  
The current draw test should always be performed if the test using  
the -VAS5097A- had the following results:  
1 - Starting power sufficient  
2 - Starting power insufficient  
3 - Starting power very insufficient  
4 - Cannot be tested - charge the Battery - A- and perform the  
test again  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
5 - -VAS50p9e7rmAitt-edduonelesssnauothtotruiserdnboy nAU(DnI oAGL. AEUDDI,AnGodopersinnottoguuatr)antee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Depending on the test results -VAS5097A- (refer to  
⇒ “2.6.7 Test Result Evaluation”, page 22 ), additional test steps  
or work for a clear evaluation of the battery charge must be made.  
By checking a current draw capacity on a Battery - A- during the  
charging procedure, it can be determined in a short time whether  
a partially discharged or severely discharged Battery - A- can be‐  
come operable again by further charging. Refer to  
⇒ “3.6 Severely Discharged Batteries”, page 57 .  
Test Prerequisites  
♦ When charging a battery, the temperature of the battery must  
be at least 10 °C (50 °F).  
♦ The charger must be able to deliver at least 30 A charge cur‐  
rent, such as on the -VAS5095A- / -VAS5900- / Battery Charg‐  
er - VAS5903- .  
♦ When charging with the -VAS5095A- , the Battery - A- current  
draw must be measured using a current probe ( -  
VAS6356/4A- ).  
♦ The -VAS5900- and the -VAS5903- indicate the current draw.  
Procedure  
– Connect the Battery - A- to the Battery Charger and start the  
charging process.  
– Measure the Battery - A- charge current after five minutes.  
Test Result  
The charge current must be above 10% of the nominal capacity  
5 minutes after charging begins.  
Example  
With a 60 Ah battery, the charge current must be greater than 6  
A 5 minutes after charging begins.  
2. Battery, Checking  
23  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Fully charge the Battery - A- if the charge current is higher than  
10% of the nominal capacity.  
– Let the Battery - A- sit for two hours and then perform the bat‐  
tery load test. Refer to ⇒ “2.6.3 Battery Load Test”, page 18 .  
If the charge current is less than 10% of the nominal capacity (less  
than 6 A for a 60 Ah battery) five minutes after starting the charg‐  
ing, then replace the Battery - A- . Refer to ⇒ Electrical Equip‐  
ment; Rep. Gr. 27 ; Battery; Battery, Removing and Installing .  
– In warranty and Goodwill cases, fill out the battery test sheet  
and keep it with the Battery - A- .  
2.8  
Battery, Checking Resting Voltage, Ve‐  
hicles in Storage or Inventory  
Special tools and workshop equipment required  
♦ Analog/Digital Multimeter - FLU83III-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Note  
♦ The resting voltage may only be measured on vehicles in stor‐  
age or inventory within the scope of the prescribed mainte‐  
nance and care work as an assessment criteria for the Battery  
- A- condition.  
♦ The resting voltage measurement serves to determine wheth‐  
er it is necessary to recharge the Battery - A- on vehicles in  
storage or inventory. Refer to ⇒ Maintenance Intervals; Rep.  
Gr. 03 .  
Test Conditions  
The Battery - A- may not be charged or discharged for at least  
two days.  
Procedure  
– Measure the Battery - A- resting voltage using the -FLU83III- .  
Test Result  
No Load Voltage  
11.60 V  
Charge Level  
0%  
Battery - A- Charge  
Discharge, the whole capacity is removed. Charging totally  
discharged batteries. Refer to  
Protected by copyright. Copying for ⇒priv“a3te.6or cSomemveerrceiallypuDrpoissecsh, ian rpgaret odr inBwahtotlee,riisenso”t , page 57 .  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Measured Value  
Required Actions  
Resting voltage greater than or Resting voltage OK  
equal to 12.5 V  
Resting voltage lower than 12.5 – Charge the Battery - A- . Re‐  
V
fer to  
⇒ “3 Battery, Charging”,  
page 25 .  
24  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3
Battery, Charging  
⇒ “3.1 Battery Charger VAS5095A ”, page 25  
⇒ “3.2 Battery Charger VAS5900 ”, page 31  
⇒ “3.3 Battery Charger VAS5903 ”, page 42  
⇒ “3.4 Battery Charger VAS5906 ”, page 53  
⇒ “3.5 Solar Battery Maintainer VAS6102A ”, page 56  
⇒ “3.6 Severely Discharged Batteries”, page 57  
3.1  
Battery Charger - VAS5095A-  
⇒ “3.1.1 General Information”, page 25  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26  
⇒ “3.1.3 Battery, Charging with Battery Charger VAS5095A ”,  
page 26  
⇒ “3.1.4 Severely Discharged Battery, Charging with Battery  
Charger VAS5095A ”, page 28  
⇒ “3.1.5 Battery Charger VAS5095A Support Mode”, page 28  
⇒ “3.1.6 Battery Charger VAS5095A Maintenance Charging”,  
page 30  
3.1.1  
General Information  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
WApRerwNmitiIhtNteredGsupnelcetstsoathuethcoorirsreedctbnyesAsUoDf IinAfoGrm. AaUtioDnI AinGthdisoedsocnuomt geunat.raCnotpeyeriogrhat cbcyeApUt aDnIyAlGia.bility  
Risk of injury. Follow all warning messages and safety pre‐  
cautions. Refer to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
In order to prevent damage to the Battery - A- or vehicle, ob‐  
serve  
the  
battery  
type  
information.  
Refer  
to  
⇒ “1.2 Battery Types”, page 1 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Note  
♦ The charge current cannot be read on the -VAS5095A- . The  
charge current must be measured externally with a current  
probe ( -VAS6356/4A- ).  
♦ Observe the -VAS5095A- Operating Instructions.  
♦ -VAS5095A- device description. Refer to  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26 .  
3. Battery, Charging  
25  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
♦ Charge the Battery - A- . Refer to  
⇒ “3.1.3 Battery, Charging with Battery Charger VAS5095A ”,  
page 26 .  
♦ Severely discharged Battery - A- , charging. Refer to  
⇒ “3.1.4 Severely Discharged Battery, Charging with Battery  
Charger VAS5095A ”, page 28 .  
♦ Support mode. Refer to  
⇒ “3.1.5 Battery Charger VAS5095A Support Mode”,  
page 28 .  
♦ Buffer mode/maintenance charging. Refer to  
⇒ “3.1.6 Battery Charger VAS5095A Maintenance Charging”,  
page 30 .  
3.1.2  
Battery Charger - VAS5095A- Device  
Description  
The -VAS5095A- is designed to charge all 12 V Batteries - A- in  
the VW group.  
The battery is charged without amperage or voltage surges.  
Thereby the on-board electronics will not be affected. It is not  
necessary to remove the Battery - A- from the vehicle or be dis‐  
connected from the electrical system during charging.  
-VAS5095A-  
1 - ON/OFF-Switch (0 = OFF)  
Protected by copyright. Copying for private or com
2 - Charge current display (I greaterptehrmaintted1u2nleAss)authorised by AUDI AG. AUDI
3 - Battery - A- charge current display,wpitharretsipaelclyt tocthheacrogrreecdtn(egssreofaintf‐ormation i
er than 90%)  
4 - Maintenance charging, lights up green when the Battery -  
A- is charged  
5 - Interference indicator  
6 - Support mode indicator  
7 - Support mode/normal mode selector switch  
8 - Charge cable: red charging clamp (+), black charging clamp  
(-)  
9 - Battery type change switch (on the bottom of the unit)  
3.1.3  
Battery, Charging with Battery Charger  
- VAS5095A-  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5095A-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
26  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Caution  
While charging, always set the battery type to 2.4 V/C (Volts/  
Cell)! This applies to all Batteries - A- .  
Note  
The Battery - A- temperature must be at least 10 °C (50 °F).  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Procedure  
– Turn off the ignition and all electrical consumers and remove  
the ignition key.  
– Check the battery type setting on the battery type switch.  
Refer to  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26 . The battery type switch must be set to 2.4V/C  
(Volts/Cell).  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
On vehicles with a Start/Stop funcwtiiothnresapnecdt toatnheicnosrrteactlnleesds oBf ianftotremraytion in this document. Copyright by AUDI AG.  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
– Switch on the -VAS5095A- . Refer to  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26 .  
Charge current displays. Refer to  
⇒ Fig. ““ -VAS5095A- ”“ , page 26 -2- and -3- light up yellow. The  
Battery - A- is partially charged (approximately 90 %) when only  
the yellow LED -3- is on.  
If the green LED. Refer to ⇒ Fig. ““ -VAS5095A- ”“ , page 26 -4-  
is also on, then the -VAS5095A- has switched to maintenance  
charging. The Battery - A- is charged.  
– Switch off the -VAS5095A- . Refer to  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26 .  
– Remove the charging clamps from the battery terminals.  
3. Battery, Charging  
27  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.1.4  
Severely Discharged Battery, Charging  
with Battery Charger - VAS5095A-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions. Refer to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
The -VAS5095A- automatically detects severely discharged Bat‐  
teries - A- and starts the charging process conservatively with a  
low charge current. The charge current is automatically adjusted  
to the battery charge state.  
Note  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
♦ For information in the chapter. Refer to  
⇒ “3.6 Severely Discharged Batteries”, page 57 .  
♦ The battery voltage must be at least 0.6 V!  
♦ Severely discharged Batteries - A- in vehicles must be re‐  
placed prior to delivery. Pre-existing damage cannot be ruled  
out.  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Procedure  
– Charge the Battery - A- . Refer to  
⇒ “3.1.3 Battery, Charging with Battery Charger VAS5095A ”,  
page 26 .  
3.1.5  
Battery Charger - VAS5095A- Support  
Mode  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5095A-  
General Information  
The support mode provides the vehicle electrical system with  
voltage when the Battery - A- is removed or disconnected.  
For more information. Refer to the -VAS5095A- Operating In‐  
structions.  
The support mode is used for the following situations:  
♦ Vehicle electrical system support mode with the Battery - A-  
not installed  
♦ Maintaining the voltage when the battery is being replaced  
♦ Systems test without the Battery - A-  
28  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Procedure  
Caution  
♦ The polarity protection of the charger clamps is not active  
in the operation mode “charging severely discharged bat‐  
teries/Support mode”. Connect the charger clamps to the  
battery terminals correctly according to polarity!  
♦ It caPnrorteecsteudlbtyicnopsyprigahrt.kCsopdyiungefotroprsivahteoortr ccoimrcmuericti.al purposes, in part or in whole, is not  
♦ Thispceormnitstetdituuntleesss aautnhoreisxepd bloysAiUoDnI ArGis. AkU.DI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
♦ Make sure the charging clamp connections are secure.  
– Remove the Battery - A- . Refer to ⇒ Electrical Equipment;  
Rep. Gr. 27 ; Battery; Battery, Removing and Installing .  
Caution  
Whenever the Battery - A- is removed, be careful to prevent  
contact between the connected charge clamp on the positive  
terminal and the body ground. Likewise prevent contact be‐  
tween the battery terminals.  
– Clamp the red charging clamp (+) to the vehicle positive bat‐  
tery terminal.  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Attach the black charging clamp (-) to the vehicle battery neg‐  
ative terminal.  
– Check the setting for the support mode/standard opera-  
tion switch. Refer to  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26 . It must be set to “support mode”.  
3. Battery, Charging  
29  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Check correct polarity connection of charger clamps.  
– Switch on the -VAS5095A- . Refer to  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26 .  
The -VAS5095A- starts the support mode.  
End the Battery Support Mode  
– Switch off the -VAS5095A- . Refer to  
⇒ “3.1.2 Battery Charger VAS5095A Device Description”,  
page 26 .  
– Remove the charging clamps from the battery terminals.  
– Disconnect the -VAS5095A- from the power.  
3.1.6  
Battery Charger - VAS5095A- Mainte‐  
nance Charging  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
In maintenance charging, the -VAS5095A- provides safe charg‐  
ing and preserves the charge of the Battery - A- .  
Procedure  
– Proceed as if charging the Battery - A- . Refer to  
⇒ “3.1.3 Battery, Charging with Battery Charger VAS5095A ”,  
page 26 .  
If the Battery - A- is discharged by an electrical consumer during  
maintenance charging, the -VAS5095A- automatically supplies  
the appropriate charge.  
Maintenance charging can be performed without time restrictions.  
The Battery - A- can be used constantly.  
30  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.2  
Battery Charger - VAS5900-  
⇒ “3.2.1 General Information”, page 31  
⇒ “3.2.2 Battery Charger VAS5900 Device Description”,  
page 32  
⇒ “3.2.3 Battery, Charging with Battery Charger VAS5900 ”, page  
32  
⇒ “3.2.4 Battery Charger VAS5900 Service Charge”, page 34  
⇒ “3.2.5 Severely Discharged Battery, Charging with Battery  
Charger VAS5900 ”, page 37  
⇒ “3.2.6 Battery Charger VAS5900 Support Mode”, page 38  
⇒ “3.2.7 Battery Charger VAS5900 Maintenance Charging”, page  
40  
3.2.1  
General Information  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
The charge current for the -VAS5900- can be read directly on the  
-VAS5900- .  
Note  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
Observe the -VAS5900- Operating Instructions.  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
♦ -VAS5900- device description. Refer to  
⇒ “3.2.2 Battery Charger VAS5900 Device Description”, page  
32 .  
♦ Charge the Battery - A- . Refer to  
⇒ “3.2.3 Battery, Charging with Battery Charger VAS5900 ”,  
page 32 .  
♦ Service charge. Refer to  
⇒ “3.2.4 Battery Charger VAS5900 Service Charge”,  
page 34 .  
♦ Severely discharged Battery - A- , charging. Refer to  
⇒ “3.2.5 Severely Discharged Battery, Charging with Battery  
Charger VAS5900 ”, page 37 .  
♦ Support mode. Refer to  
⇒ “3.2.6 Battery Charger VAS5900 Support Mode”,  
page 38 .  
3. Battery, Charging  
31  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
♦ Maintenance charging. Refer to  
⇒ “3.2.7 Battery Charger VAS5900 Maintenance Charging”,  
page 40 .  
3.2.2  
Battery Charger - VAS5900- Device De‐  
scription  
The -VAS5900- is designed to charge all 12 V Batteries - A- in the  
VW group.  
-VAS5900-  
Protected by copyrighthole, is not  
permitted unless authany liability  
with respect to the cUDI AG.  
Control Field Overview  
1 - Display  
2 - ↑ -button “Up”  
3 - ↓ -button “Down”  
4 - START/STOP-button  
5 - INFO-button  
3.2.3  
Battery, Charging with Battery Charger  
- VAS5900-  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5900-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
32  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Note  
The Battery - A- temperature must be at least 10 °C (50 °F).  
Procedure  
– Turn off the ignition and all electrical consumers and remove  
the ignition key.  
– Connect the -VAS5900- to the power supply. The last selected  
mode is shown on the display. Refer to  
⇒ “3.2.2 Battery Charger VAS5900 Device Description”, page  
32 .  
– Set the battery type with the INFO button.  
The symbol -1- for “standard charge of wet batteries” or the sym‐  
bol -2- for “standard charge of Gel/Absorbent Glass Mat (AGM)  
batteries” is indicated in the display.  
– Set the battery capacity (Ah) on the Battery - A- to be charged  
with the corresponding ↑ button or ↓ button.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
The -VAS5900- recognizes the nominal voltage of the connected  
Battery - A- (6 V/12 V/24 V) and begins the charging process au‐  
tomatically.  
The -VAS5900- begins Pthroetec“tfeidnbaylccophyarigrhgt.inCogp”yiwnghfoernpritvhatee ocr hcoamrmgeercilael vpuerploses, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarante
with respect to the correctness of information in this document. Copy
is approximately 80 to 85%. The fourth bar is indicated on the  
display -1-. The Battery - A- is ready to be used.  
3. Battery, Charging  
33  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
With a charge status of 100%, all bars are indicated on the display  
-1-.  
Note  
♦ With the “standard charge”, parallel operation of electrical con‐  
sumers during the charging process is possible. The charging  
time is lengthened by this.  
♦ Depending on the battery type, the -VAS5900- switches to  
maintenance charging after 1 to 7 hours. To reach a 100%  
charge level, the Battery - A- should remain connected to the  
-VAS5900- .  
Possible malfunctions and how they are handled  
1 - Displayed voltage does not match the nominal voltage:  
– Hold down the ↑ button or ↓ button until the charging process  
begins.  
2 - Displayed battery voltage does not match the nominal volt‐  
age - the charging process has already begun:  
– Press the START/STOP button two times.  
– Hold down the ↑ button or ↓ button until the charging process  
begins again.  
3 - The Battery Charger - VAS5900- does not recognize the  
Battery - A- , if the battery voltage is less than 2V:  
The display remains unchanged.  
The selected battery type and Ampere hours (Ah) are displayed.  
Battery - A- charging, ending  
– Press the START/STOP-button.  
– Remove the charging clamps from the battery terminals.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
– Disconnect the -VAS5900- from the power.  
3.2.4  
Battery Charger - VAS5900- Service  
Charge  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5900-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Caution  
“Service charging” is not permitted for VW vehicles, because  
voltage surges can damage the on-board electronics.  
The Battery - A- must always be disconnected from the vehicle  
electrical system when using the “service charge” mode.  
34  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Caution  
Always set the mode that corresponds to the Battery - A- during  
the charging process. Refer to the -VAS5900- Operating In‐  
structions.  
“Service Charging” is suitable for:  
♦ Wet batteries having a visual indicator which allows charg‐  
ing (visual indicator black or green).  
The “Service charge (SERV)” mode is only used with sulfated  
Batteries - A- . The Battery - A- with voltages greater than 14.4 V  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
is charged. A partial removal of the sulfation layer can result from  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
this. Check the visual indicator after charging, immediately before  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
the Battery - A- is used. Refer to  
⇒ “2.3 Visual Indicator Color Display, Checking”, page 9 .  
Note  
The Battery - A- temperature must be at least 10 °C (50 °F).  
Procedure  
– Turn off the ignition and all electrical consumers and remove  
the ignition key.  
– Connect the -VAS5900- to the power supply. The last selected  
mode is shown on the display. Refer to  
⇒ “3.2.2 Battery Charger VAS5900 Device Description”, page  
32 .  
3. Battery, Charging  
35  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Set the battery type with the INFO button.  
The symbol -1- for “service charge of wet batteries” or the symbol  
-2- for “service charge of Gel/Absorbent Glass Mat (AGM) bat‐  
teries” is indicated in the display.  
– Set the battery capacity (Ah) on the Battery - A- to be charged  
with the corresponding ↑ button or ↓ button.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
The -VAS5900- recognizes the nominal voltage of the connected  
Battery - A- (6 V/12 V/24 V) and begins the charging process au‐  
tomatically.  
The -VAS5900- begins the “final charging” when the charge level  
is approximately 80 to 85 % of the battery voltage. The fourth bar  
is indicated on the display -1-. The Battery - A- is now ready to be  
used.  
Note  
A successful “service charge” depends on the degree of sulfation  
on the Battery - A- .  
Possible malfunctions and how they are handled  
1 - Displayed voltage does not match the nominal voltage:  
– Hold down the ↑ button or ↓ button until the charging process  
begins.  
2 - Displayed battery voltage does not match the nominal volt‐  
age - the charging process has already begun:  
– Press the START/STOP button two times.  
– Hold down the ↑ button or ↓ button until the charging process  
begins.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
3 - The charger does not recognize a Battery - A- , when the  
battery voltage is less than 2 V:  
The display remains unchanged.  
The set operating mode and Ampere-hours (Ah) are displayed.  
Battery - A- charging, ending  
– Press the START/STOP-button.  
– Remove the charging clamps from the battery terminals.  
– Disconnect the -VAS5900- from the power.  
36  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.2.5  
Severely Discharged Battery, Charging  
with Battery Charger - VAS5900-  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5900-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Caution  
♦ The polarity protection of the charger clamps is not active  
in the operation mode “charging severely discharged bat‐  
teries/Support mode”. Connect the charger clamps to the  
battery terminals correctly according to polarity!  
♦ Always set the mode that corresponds to the Battery - A-  
during the charging process. Refer to the -VAS5900- Op‐  
erating Instructions.  
♦ The -VAS5900- does not recognize the severely dis‐  
charged Battery - A- . Refer to  
⇒ “3.6 Severely Discharged Batteries”, page 57 .  
♦ Do not touch START / STOP button when battery cables  
are incorrectly connected! The -VAS5900- can become  
damaged.  
The -VAS5900- will not automatically recognize the Battery - A-  
for Batteries - A- with a voltage less than 2 V.  
Note  
♦ For information in the chapter. Refer to  
⇒ “3.6 Severely Discharged Batteries”, page 57 .  
♦ The Battery - A- temperature must be at least 10 °C (50 °F).  
♦ Severely discharged batteries in vehicles must be replaced  
prior to delivery. Pre-existing damage cannot be ruled out.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Procedure  
– Turn off the ignition and all electrical consumers and remove  
the ignition key.  
– Connect the -VAS5900- to the power supply. The last selected  
mode is shown on the display. Refer to  
3. Battery, Charging  
37  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
⇒ “3.2.2 Battery Charger VAS5900 Device Description”, page  
32 .  
– Set the battery type with the INFO button.  
The symbol -1- for “service charge of wet batteries” or the symbol  
-2- for “service charge of Gel/Absorbent Glass Mat (AGM) bat‐  
teries” is indicated in the display.  
– Set the battery capacity (Ah) on the Battery - A- to be charged  
with the corresponding ↑ button or ↓ button.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
– Press the START/STOP button for about 5 seconds. The menu  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
selectiownith“Creshpaecrtgtointhge csoerrvecetnreeslsyofdinifsocrmhaatiorngien dthisbdaotctuemreinet.sC/SopuyrpigphtobrytAUDI AG.  
mode” is activated.  
– Press the corresponding ↑ -button or ↓ button to adjust the  
battery voltage (6 V/12 V/24 V).  
Note  
If no button is touched within five seconds, the -VAS5900- will  
return to the main menu (operating mode selection).  
– Select the battery voltage by pressing the START/STOP button.  
Then the inquiry about the correct polarity of the charging clamps  
is made.  
– Check correct polarity connection of charger clamps.  
– Confirm charging clamps are connected to correct poles via  
START/STOP button.  
The -VAS5900- starts to charge the severely discharged Battery  
- A- .  
Battery - A- charging, ending  
– Press the START/STOP-button.  
– Remove the charging clamps from the battery terminals.  
– Disconnect the -VAS5900- from the power.  
3.2.6  
Battery Charger - VAS5900- Support  
Mode  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5900-  
38  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
General Information  
The support mode provides the vehicle electrical system with  
voltage when the Battery - A- is removed or disconnected.  
For more information. Refer to the -VAS5900- Operating Instruc‐  
tions.  
The support mode is used for the following situations:  
♦ Vehicle electrical system support mode with the Battery - A-  
not installed  
♦ Maintaining the voltage when the battery is being replaced  
♦ Systems test without the Battery - A-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Procedure  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Caution  
♦ The polarity protection of the charger clamps is not active  
in the operation mode “charging severely discharged bat‐  
teries/Support mode”. Connect the charger clamps to the  
battery terminals correctly according to polarity!  
♦ It can result in sparks due to short circuit.  
♦ This constitutes an explosion risk.  
♦ Do not touch START / STOP button when battery cables  
are incorrectly connected! The -VAS5900- can become  
damaged.  
– Remove the Battery - A- . Refer to ⇒ Electrical Equipment;  
Rep. Gr. 27 ; Battery; Battery, Removing and Installing .  
– Connect the -VAS5900- to the power supply. The last selected  
mode is shown on the display. Refer to  
⇒ “3.2.2 Battery Charger VAS5900 Device Description”, page  
32 .  
3. Battery, Charging  
39  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Caution  
Whenever the Battery - A- is removed, be careful to prevent  
contact between the connected charge clamp on the positive  
terminal and the body ground. Likewise prevent contact be‐  
tween the battery terminals.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
– Press the START/STOP button for about 5 seconds. The menu  
selection “Charging severely discharged batteries/Support  
mode” is activated.  
– Press the corresponding ↑ -button or ↓ button to adjust the  
battery voltage (6 V/12 V/24 V).  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
Note  
If no button is touched withiwnithfirveespescet tcoothnedcosr,retchtneessBoaf itntfeorrmyatCionhian rthgisedroc-ument. Copyright by AUDI AG.  
VAS5900- will return to the main menu (operating mode selec‐  
tion).  
– Select the battery voltage by pressing the START/STOP button.  
Then the inquiry about the correct polarity of the charging clamps  
is made.  
– Check correct polarity connection of charger clamps.  
– Confirm charging clamps are connected to correct poles via  
START/STOP button.  
The -VAS5900- starts the Battery - A- support mode.  
End the Battery Support Mode  
– Press the START/STOP-button.  
– Remove the charging clamps from the battery terminals.  
– Disconnect the -VAS5900- from the power.  
3.2.7  
Battery Charger - VAS5900- Mainte‐  
nance Charging  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5900-  
40  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Note  
♦ If the Battery - A- is discharged by an electrical consumer dur‐  
ing maintenance charging, the -VAS5900- automatically sup‐  
plies the appropriate charge.  
♦ Maintenance charging can be performed without time restric‐  
tions.  
♦ The Battery - A- can be used constantly.  
♦ Observe the maintenance notes of the battery manufacturer.  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
If the Battery - A- is fully charged, the -VAS5900- starts mainte‐  
nance charging.  
Procedure  
– Proceed as if charging the Battery - A- . Refer to  
⇒ “3.2.3 Battery, Charging with Battery Charger VAS5900 ”,  
page 32 .  
With a charge status of 100%, all bars are indicated on the display  
-1-.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liab
with respect to the correctness of information in this document. Copyright by AUDI AG.  
3. Battery, Charging  
41  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.3  
Battery Charger - VAS5903-  
⇒ “3.3.1 General Information”, page 42  
⇒ “3.3.2 Battery Charger VAS5903 Device Description”,  
page 43  
⇒ “3.3.3 Battery, Charging with Battery Charger VAS5903 ”, page  
43  
⇒ “3.3.4 Refresh Charging with Battery Charger VAS5903 ”, page  
45  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
⇒ “3.3.5 Severely Discharged Battery, Charging with Battery  
Charger VAS5903p”e,rmpiattegdeun4le8ss authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
⇒ “3.3.6 Battery Charger VAS5903 Support Mode”, page 49  
⇒ “3.3.7 Battery Charger VAS5903 Maintenance Charging”, page  
51  
3.3.1  
General Information  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Note  
Observe the -VAS5903- Operating Instructions.  
♦ -VAS5903- device description. Refer to  
⇒ “3.3.2 Battery Charger VAS5903 Device Description”, page  
43 .  
♦ Charge the Battery - A- . Refer to  
⇒ “3.3.3 Battery, Charging with Battery Charger VAS5903 ”,  
page 43 .  
♦ Refresh charging. Refer to  
⇒ “3.3.4 Refresh Charging with Battery Charger VAS5903 ”,  
page 45 .  
♦ Severely discharged Battery - A- , charging. Refer to  
⇒ “3.3.5 Severely Discharged Battery, Charging with Battery  
Charger VAS5903 ”, page 48 .  
♦ Support mode. Refer to  
⇒ “3.3.6 Battery Charger VAS5903 Support Mode”,  
page 49 .  
42  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
♦ Maintenance charging. Refer to  
⇒ “3.3.7 Battery Charger VAS5903 Maintenance Charging”,  
page 51 .  
3.3.2  
Battery Charger - VAS5903- Device De‐  
scription  
The -VAS5903- is designed to charge all 12 V Batteries - A- in the  
VW group.  
-VAS5903-  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
Control Field Overview  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
1 - Display  
2 - ↑ -button “Up”  
3 - ↓ -button “Down”  
4 - START/STOP-button  
5 - INFO-button  
3.3.3  
Battery, Charging with Battery Charger  
- VAS5903-  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5903-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
3. Battery, Charging  
43  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Note  
The Battery - A- temperature must be at least 10 °C.  
Procedure  
– Turn off the ignition and all electrical consumers and remove  
the ignition key.  
– Connect the -VAS5903- to the power supply. The last selected  
operation mode is shown on the display. Refer to  
⇒ “3.3.2 Battery Charger VAS5903 Device Description”, page  
43 .  
– Set the battery type with the INFO button.  
The symbol -1- for “standard charge of wet batteries” or the sym‐  
bol -2- for “standard charge of Gel/Absorbent Glass Mat (AGM)  
batteries” is indicated in the display.  
– Set the battery capacity (Ah) on the Battery - A- to be charged  
with the corresponding ↑ button or ↓ button.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
Monitoring Control Module - J367- , the black charge terminal (-)  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
must be connecwteithdretsopetcht teo tbheocdoryregctnreosusnofdin.foTrmhaetioSn itnathrits/Sdotcoupmesnty. Csotepymright by AUDI AG.  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
The -VAS5903- recognizes the nominal voltage of the connected  
Battery - A- (6 V/12 V/24 V) and begins the charging process au‐  
tomatically.  
The -VAS5903- begins the “final charging” when the charge level  
is approximately 80 to 85%. The fourth bar is indicated on the  
display -1-. The Battery - A- is ready to be used.  
44  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
With a charge status of 100%, all bars are indicated on the display  
-1-.  
Note  
♦ With the battery type “standard charge”, parallel operation of  
electrical consumers during the charging process is possible.  
The charging time is lengthened by this.  
♦ Depending on the battery type, the -VAS5903- switches to  
maintenance charging after 1 to 7 hours. To reach a 100%  
charge level, the Battery - A- should remain connected to the  
-VAS5903- .  
Possible malfunctions and how they are handled  
1 - Displayed voltage does not match the nominal voltage:  
– Hold down the ↑ button or ↓ button until the charging process  
begins.  
2 - Displayed battery voltage does not match rated voltage -  
charging process has already begun:  
– Press the START/STOP button two times.  
– Hold down the ↑ button or ↓ button until the charging process  
begins again.  
3 - The charger does not recognize a Battery - A- , when the  
battery voltage is less than 2 V:  
The display remains unchanged.  
The selected battery type and Ampere hours (Ah) are displayed.  
Battery - A- charging, ending  
– Press the START/STOP-button.  
– Remove the charging clamps from the battery terminals.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
– witDh riesscpeocnt tnoethcetcothrreectn-eVssAoSf i5nf9or0m3at-ionfrion mthistdhoceumpeonwt. Ceorp.yright by AUDI AG.  
3.3.4  
Refresh Charging with Battery Charger  
- VAS5903-  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5900-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
3. Battery, Charging  
45  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Caution  
“Refresh charging” is not permitted for VW vehicles, because  
voltage surges can damage the on-board electronics.  
The Battery - A- must always be disconnected from the vehicle  
electrical system when using the “Refresh charging” mode.  
Caution  
Always set the mode that corresponds to the Battery - A- during  
the charging process. Refer to the -VAS5903- Operating In‐  
structions.  
“Refresh Charging” is suitable for wet batteries, which must be  
filled with distilled water.  
Do not use “refresh charging” mode on maintenance-free wet  
batteries.  
“Refresh charging (Refr)” mode is only used on Batteries - A- that  
are possibly defective (sulfation). The Battery - A- is then charged  
to the maximum specific gravity of the electrolyte and the plates  
are reactivated (removal of sulfation layer).  
Note  
The Battery - A- temperature must be at least 10 °C (50 °F).  
Procedure  
– Turn off the ignition and all electrical consumers and remove  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
the ignition key.  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
– Connect the -VAS5903- to the powweirthsreusppepcltyto.tThehceorlraecstntessseolfeincftoermdation in this document. Copyright by AUDI AG.  
operation mode is shown on the display. Refer to  
⇒ “3.3.2 Battery Charger VAS5903 Device Description”, page  
43 .  
46  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Set the battery type with the INFO button.  
The symbol -1- for “refresh - charging wet batteries” or the symbol  
-2- for “refresh - charging of Gel/Absorbent Glass Mat (AGM) bat‐  
teries” is indicated in the display.  
– Set the battery capacity (Ah) on the Battery - A- to be charged  
with the corresponding ↑ button or ↓ button.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
The -VAS5900- recognizes the nominal voltage of the connected  
Battery - A- (6 V/12 V/24 V) and begins the charging process au‐  
tomatically.  
The -VAS5900- begins the “final charging” when the charge level  
is approximately 80 to 85 % of the battery voltage. The fourth bar  
is indicated on the display -1-. The Battery - A- is now ready to be  
used.  
Note  
A successful “Refresh charge” depends on the degree of sulfation  
on the Battery - A- .  
Possible Malfunctions and How They Are Handled  
1 - Displayed voltage does not match the nominal voltage:  
– Hold down the ↑ button or ↓ button until the charging process  
begins.  
2 - Displayed battery voltage does not match rated voltage -  
charging process has already begun:  
– Press the START/STOP button two times.  
– Hold down the ↑ button or ↓ button until the charging process  
begins.  
3 - The charger does not recognize a Battery - A- , when the  
battery voltage is less than 2 V:  
The display remains unchanged.  
The set operating mode and Ampere-hours (Ah) are displayed.  
Battery - A- charging, ending  
– Press the START/STOP-button.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
– RemoveptehrmeittcedhuanrlegsisnaguthcolraismedpbysAfUrDoImAGt.hAeUDbI AaGttdeoreys nteotrgmuairnanatelse.or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
– Disconnect the -VAS5903- from the power.  
3. Battery, Charging  
47  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.3.5  
Severely Discharged Battery, Charging  
with Battery Charger - VAS5903-  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5900-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Caution  
♦ The polarity protection of the charger clamps is not active  
in the operation mode “charging severely discharged bat‐  
teries/Support mode”. Connect the charger clamps to the  
battery terminals correctly according to polarity!  
♦ Always set the mode that corresponds to the Battery - A-  
during the charging process. Refer to the -VAS5903- Op‐  
erating Instructions.  
♦ The -VAS5903- does not recognize the severely dis‐  
charged Battery - A- . Refer to  
⇒ “3.6 Severely Discharged Batteries”, page 57 .  
♦ Do not touch START / STOP button when battery cables  
are incorrectly connected! The -VAS5903- can become  
damaged.  
The -VAS5903- will not automatically recognize the Battery - A-  
for Batteries - A- with a voltage less than 2 V.  
Note  
♦ For information in the chapter. Refer to  
⇒ “3.6 Severely Discharged Batteries”, page 57 .  
♦ The Battery - A- temperature must be at least 10 °C (50 °F).  
♦ Severely discharged batteries in vehicles must be replaced  
prior to delivery. Pre-existing damage cannot be ruled out.  
Procedure  
– Turn off the ignition and all electrical consumers and remove  
the ignition key.  
– Connect the -VAS5903- to the power supply. The last selected  
operation mode is shown on the display. Refer to  
48  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
⇒ “3.3.2 Battery Charger VAS5903 Device Description”, page  
43 .  
– Set the battery type with the INFO button.  
The symbol -1- for “service charge of wet batteries” or the symbol  
-2- for “service charge of Gel/Absorbent Glass Mat (AGM) bat‐  
teries” is indicated in the display.  
– Set the battery capacity (Ah) on the Battery - A- to be charged  
with the corresponding ↑ button or ↓ button.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
– Press the START/STOP button for about 5 seconds. The menu  
selection “Charging severely discharged batteries/Support  
mode” is activated.  
– Press the corresponding ↑ -button or ↓ button to adjust the  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
battery voltage (6 V/12 V/24 V).  
Note  
If no button is touched within five seconds, the -VAS5903- will  
return to the main menu (operating mode selection).  
– Select the battery voltage by pressing the START/STOP button.  
Then the inquiry about the correct polarity of the charging clamps  
is made.  
– Check correct polarity connection of charger clamps.  
– Confirm charging clamps are connected to correct poles via  
START/STOP button.  
The -VAS5903- starts to charge the severely discharged Battery  
- A- .  
Battery - A- charging, ending  
– Press the START/STOP-button.  
– Remove the charging clamps from the battery terminals.  
– Disconnect the -VAS5903- from the power.  
3.3.6  
Battery Charger - VAS5903- Support  
Mode  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5903-  
3. Battery, Charging  
49  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
General Information  
The support mode provides the vehicle electrical system with  
voltage when the Battery - A- is removed or disconnected.  
For more information. Refer to the -VAS5903- Operating Instruc‐  
tions.  
The support mode is used for the following situations:  
♦ Vehicle electrical system support mode with the Battery - A-  
not installed  
♦ Maintaining the voltage when the battery is being replaced  
♦ Systems test without the Battery - A-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Procedure  
Caution  
♦ The polarity protection of the charger clamps is not active  
in the operation mode “charging severely discharged bat‐  
teries/Support mode”. Connect the charger clamps to the  
battery terminals correctly according to polarity!  
♦ It can result in sparks due to short circuit.  
♦ This constitutes an explosion risk.  
♦ Make sure the charging clamp connections are secure.  
♦ Do not touch START / STOP button when battery cables  
are incorrectly connected! The -VAS5903- can become  
damaged.  
– Remove the Battery - A- . Refer to ⇒ Electrical Equipment;  
Rep. Gr. 27 ; Battery; Battery, Removing and Installing .  
– Connect the -VAS5903- to the power supply. The last selected  
operation mode is shown on the display. Refer to  
⇒ “3.3.2 Battery Charger VAS5903 Device Description”, page  
43 .  
50  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Caution  
Whenever the Battery - A- is removed, be careful to prevent  
contact between the connected charge clamp on the positive  
terminal and the body ground. Likewise prevent contact be‐  
tween the battery terminals.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– Connect the black charge terminal (-) to the negative terminal  
of the Battery - A- /negative connector.  
– Press the START/STOP button for about 5 seconds. The menu  
selection “Charging severely discharged batteries/Support  
mode” is activated.  
– Press the corresponding ↑ -button or ↓ button to adjust the  
battery voltage (6 V/12 V/24 V).  
Note  
If no button is touched within five seconds, the -VAS5903- will  
return to the main menu (operating mode selection).  
– Select the battery voltage by pressing the START/STOP button.  
Then the inquiry about the correct polarity of the charging clamps  
is made.  
– Check correct polarity connection of charger clamps.  
– Confirm charging clamps are connected to correct poles via  
START/STOP button.  
The -VAS5903- starts the Battery - A- support mode.  
End the Battery Support Mode  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
– Press the START/STOP-button.  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
– Remove the charging clamps from the battery terminals.  
– Disconnect the -VAS5903- from the power.  
3.3.7  
Battery Charger - VAS5903- Mainte‐  
nance Charging  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5903-  
3. Battery, Charging  
51  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Note  
♦ If the Battery - A- is discharged by an electrical consumer dur‐  
ing maintenance charging, the -VAS5903- automatically sup‐  
plies an appropriate charge.  
♦ Maintenance charging can be performed without time restric‐  
tions.  
♦ The Battery - A- can be used constantly.  
♦ Observe the maintenance notes of the battery manufacturer.  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
If the Battery - A- is fully chargweitdh,retshpeect-tVo tAheSc5or9re0ct3ne-sssotaf inrtfosrmmatiaonininteth‐is document. Copyright by AUDI AG.  
nance charging.  
Procedure  
– Proceed as if charging the Battery - A- . Refer to  
⇒ “3.3.3 Battery, Charging with Battery Charger VAS5903 ”,  
page 43 .  
With a charge status of 100%, all bars are indicated on the display  
-1-.  
52  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.4  
Battery Charger - VAS5906-  
⇒ “3.4.1 General Information”, page 53  
⇒ “3.4.2 Battery Charger VAS5906 Device Description”,  
page 54  
⇒ “3.4.3 Battery, Charging with Battery Charger VAS5906 ”, page  
54  
3.4.1  
General Information  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
Note  
Observe the -VAS5906- Operating Instructions.  
♦ -VAS5906- device description. Refer to  
⇒ “3.4.2 Battery Charger VAS5906 Device Description”, page  
54 .  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
♦ Charge the Battery - A- . Refer to  
⇒ “3.4.3 Battpeerrym,ittCedhuanlergssinaugthowrisitehd bByaAUttDeIrAyGC. AhUDaIrAgGedroVesAnoSt 5gu9a0ra6nte”e,or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
page 54 .  
3. Battery, Charging  
53  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.4.2  
Battery Charger - VAS5906- Device De‐  
scription  
-VAS5906-  
The -VAS5906- was developed especially for charging the vehicle  
electrical system while the vehicle is on display.  
It supplies for automatic charging of 3 - 300 Ah for starter batter‐  
ies.  
The 14.4 V maximum charging voltage is not exceeded. All elec‐  
trical consumers will be supported up to 30 A by the support  
charging.  
After the Battery - A- is completely charged, the -VAS5906-  
switches into the maintenance charging for long-term operation.  
The -VAS5906- starts automatically and does not need any ad‐  
justments. Only the charging terminals and the network cable  
need to be connected.  
For more information. Refer to the -VAS5906- Operating Instruc‐  
tions.  
Control Field Overview  
1 - 25% charge display  
2 - 50% charge display  
Protected by copyright. Copying for priv
permitted unless authorised by AUDI A
with respect to the correctness of info
3 - 75% charge display  
4 - 100% charge display  
5 - Ready-to-use display  
6 - Pushing the START/STOP and Setup buttons will stop and  
start the charging process. Enter into the setup menu and  
select characteristic line type (hold for 10 seconds)  
7 - Display malfunction  
3.4.3  
Battery, Charging with Battery Charger  
- VAS5906-  
Special tools and workshop equipment required  
♦ Battery Charger - VAS5906-  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
used!  
There is a risk of explosion during testing, charging or jump  
starting.  
These Batteries - A- must be replaced.  
54  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Procedure  
– Place the -VAS5906- in the engine compartment or under the  
vehicle.  
– Connect the -VAS5906- to the power supply.  
The -VAS5906- is in idle, the display comes on when it is “ready  
to be used”.  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions.  
Refer  
to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
Caution  
♦ Turn off the ignition and all electrical equipment.  
♦ Remove the key.  
– Connect the red charge terminal (+) to the positive terminal of  
the Battery - A- .  
Note  
On vehicles with a Start/Stop function and an installed Battery  
Monitoring Control Module - J367- , the black charge terminal (-)  
must be connected to the body ground. The Start/Stop system  
will malfunction when it is connected to the Battery - A- negative  
terminal.  
– CPorontencetedctbythcoepybriglahtc. Ckocpyhinagrfogrepritveatremorincoamlm(e-r)citaol ptuhrpeosnese, ignapatirvt oer intewrhmolein, isanlot  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
of the Battery - A- /negative connector.  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
The charging process starts after approximately two seconds.  
LEDs show the Battery - A- charge level. When all the lamps are  
on, the Battery - A- is charged.  
When the Battery - A- is completely charged, the -VAS5906- au‐  
tomatically switches to maintenance charging.  
Caution  
Sparks can result if the charging terminals are removed too  
early. End the charging process by pressing the START/STOP  
button.  
Battery - A- Charging, Ending  
– Press the START/STOP-button.  
– Remove the charging clamps from the battery terminals.  
– Disconnect the -VAS5906- from the power.  
3. Battery, Charging  
55  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
3.5  
Solar Battery Maintainer - VAS6102A-  
⇒ “3.5.1 Solar Battery Maintainer VAS6102A Device Descrip‐  
tion”, page 56  
⇒ “3.5.2 Solar Battery Maintainer VAS610A Maintenance Charg‐  
ing”, page 56  
3.5.1  
Solar Battery Maintainer - VAS6102A-  
Device Description  
Special tools and workshop equipment required  
♦ Solar Battery Maintainer - VAS6102A-  
-VAS6102A-  
The -VAS6102A- supports the vehicle electrical system and pre‐  
vents the Battery - A- from self-discharging.  
The -VAS6102A- reaches a maximum voltage of 14.3 V and a  
maximum charge current of 255 mA.  
All chargeable lead- and lead gel batteries can be charged with  
the -VAS6102A- .  
Protected by copyright. Copying for private or commercial purposes, in part or
The -VAS6102A- is connected to the diagnostic connection in the  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
vehicle.  
The -VAS6102A- has a green LED integrated inside the frame  
which displays the function being performed. The brighter the  
LED, the higher the charging current.  
It is not possible to overcharge the Battery - A- due to the inte‐  
grated electronics.  
The -VAS6102A- is secured on the interior rearview mirror -1-.  
The bottom rests on the instrument panel -2-.  
Note  
The -VAS6102A- must not touch the instrument panel completely.  
Only the bottom edge may be used for support. If it touches com‐  
pletely, the color of the instrument panel could change.  
3.5.2  
Solar Battery Maintainer - VAS610A-  
Maintenance Charging  
Special tools and workshop equipment required  
♦ Solar Battery Maintainer - VAS6102A-  
56  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Procedure  
– Secure the -VAS6102A- to the interior rearview mirror -1-.  
– Lay the bottom on the instrument panel -2-.  
Note  
The -VAS6102A- must not touch the instrument panel completely.  
Only the bottom edge may be used for support. If it touches com‐  
pletely, the color of the instrument panel could change.  
– Pull the securing string together so that the -VAS6102A- is  
close to the windshield.  
– Connect the connector for the -VAS6102A- to the vehicle di‐  
agnostic connection. Connecting is the same as with Vehicle  
Diagnostic Tester .  
– Check the -VAS6102A- functionality. The green LED must  
come on.  
3.6  
Severely Discharged Batteries  
WARNING  
Risk of injury. Follow all warning messages and safety pre‐  
cautions. Refer to  
⇒ “1.3 Warnings and Safety Precautions”, page 3 .  
A Battery - A- is designated as “severely discharged” if the resting  
voltage is less than 11.6 V.  
WARNING  
Do not check or charge a Battery - A- when the visual indicator  
has »no color or is bright yellow«. Jump starting must not be  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
used!  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
There is a risk of explosion wdituhrreinspgecttetosthtiencgor,reccthneasrsgoifningformoartiojunmin tphis document. Copyright by AUDI AG.  
starting.  
These Batteries - A- must be replaced.  
Caution  
♦ Severely discharged Batteries - A- freeze earlier.  
♦ Batteries - A- that have frozen must no longer be used.  
3. Battery, Charging  
57  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Note  
♦ Batteries - A- that have not been used for a long time will dis‐  
charge by themselves.  
♦ In severely discharged Batteries - A- , the electrolyte consists  
almost completely of water, because the acid portion has been  
greatly reduced.  
♦ Severely discharged Batteries - A- become sulfated, meaning  
all of the plate surfaces of the Batteries - A- harden.  
♦ The sulfation process may be reversed if a severely dis‐  
charged Battery - A- is recharged immediately.  
♦ If the Battery - A- is not recharged, the plates will continue to  
harden, and the ability to accept a charge will decrease. This  
results in reduction of battery performance.  
♦ Severely discharged Batteries - A- in vehicles must be re‐  
placed prior to delivery. Pre-existing damage cannot be ruled  
out.  
Procedure  
– Check the Battery - A- resting voltage. Refer to  
⇒ “3 Battery, Charging”, page 25 .  
– Charge the Battery - A- :  
♦ -VAS5095A- . Refer to  
⇒ “3.1.4 Severely Discharged Battery, Charging with Battery  
Charger VAS5095A ”, page 28 .  
♦ -VAS5900- . Refer to  
⇒ “3.2.5 Severely Discharged Battery, Charging with Battery  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
Charger VAS5900 ”, page 37 .  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
♦ -VAS5903- . Refer to  
⇒ “3.3.5 Severely Discharged Battery, Charging with Battery  
Charger VAS5903 ”, page 48 .  
♦ -VAS5906- . Refer to  
⇒ “3.4.3 Battery, Charging with Battery Charger VAS5906 ”,  
page 54 .  
58  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
4
Generator  
⇒ “4.1 Generator, Checking”, page 59  
⇒ “4.2 Overview - Generator, Bosch through MY 2000”,  
page 60  
⇒ “4.3 Overview - Bosch Generator from 2001”, page 62  
⇒ “4.4 Voltage Regulator, Bosch Generator from 2001, Removing  
and Installing”, page 63  
⇒ “4.5 Overview - Bosch Generator from 2007”, page 63  
⇒ “4.6 Voltage Regulator, Removing and Installing, Bosch Gen‐  
erator from 2007”, page 64  
⇒ “4.7 Carbon Brushes, Checking, All Bosch Generators from  
2001”, page 65  
⇒ “4.8 Overview - Generator, Valeo through MY 2000”,  
page 65  
⇒ “4.9 Overview - Valeo Generator from 2001”, page 67  
⇒ “4.10 Voltage Regulator, Valeo Generator from 2001, Remov‐  
ing and Installing”, page 68  
⇒ “4.11 Carbon Brushes, Valeo Generator from 2001, Checking”,  
page 68  
⇒ “4.12 Voltage Regulator, Removing and Installing, Valeo Gen‐  
erator from 2007”, page 69  
⇒ “4.13 Carbon Brushes, Checking, Valeo Generator from 2007”,  
page 69  
⇒ “4.14 Ribbed Belt Pulley without Freewheel, Removing and In‐  
stalling”, page 70  
⇒ “4.15 Ribbed Belt Pulley with Freewheel, Removing and Instal‐  
ling”, page 71  
⇒ “4.16 Ribbed Belt Pulley with Freewheel, Checking”,  
page 73  
⇒ “4.17 Overview - Hitachi Generator”, page 73  
⇒ “4.18 Voltage Regulator, Removing and Installing - Hitachi  
Generator”, page 74  
⇒ “4.19 Carbon Brushes, Checking, Hitachi Generator”,  
page 75  
4.1  
Generator, Checking  
⇒ “4.1.1 Generator C , Checking”, page 59  
⇒ “4.1.2 Starter Generator C29 , Checking, 0K4 and VH0”, page  
60  
⇒ “4.1.3 Starter Generator C29 , Checking, 0K4 and VH2/VH3”,  
page 60  
4.1.1  
Procedure  
Generator - C- , Checking  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
– Connect the Vehicle Diagnostic Tester .  
– Select the Diagnostic mode and start the diagnosis.  
– Select the Test plan tab.  
4. Generator  
59  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Select the Select individual test button and select the  
following tree structure consecutively:  
♦ 12V vehicle electrical system  
♦ C - Generator - Test  
– Start the selected program and follow the instructions on the  
Vehicle Diagnostic Tester display.  
4.1.2  
Starter Generator - C29- , Checking,  
0K4 and VH0  
Procedure  
– Connect the Vehicle Diagnostic Tester .  
– Select the Diagnostic mode and start the diagnosis.  
– Select the Test plan tab.  
– Select the Select individual test button and select the  
following tree structure consecutively:  
♦ 12V vehicle electrical system  
♦ C29 - Starter Generator, Checking  
– Start the selected program and follow the instructions on the  
Vehicle Diagnostic Tester display.  
4.1.3  
Starter Generator - C29- , Checking,  
0K4 and VH2/VH3  
Procedure  
– Connect the Vehicle Diagnostic Tester .  
– Select the Diagnostic mode and start the diagnosis.  
– Select the Test plan tab.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
– Select the Select individual test button and select the  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
following tree structure consecutively:  
♦ Diagnostic-capable systems  
♦ 00CC - Starter Generator -C29-  
♦ 00CC - Partial System Conditions  
♦ C29 - Starter Generator, Checking  
– Start the selected program and follow the instructions on the  
Vehicle Diagnostic Tester display.  
4.2  
Overview - Generator, Bosch through MY 2000  
60  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
1 - Bolts  
❑ 1 Nm  
2 - Cover  
❑ With three tabs  
3 - Bolts  
❑ 2 Nm  
4 - Voltage Regulator  
❑ Removing:  
–
Remove the bolts -1-  
and remove the protec‐  
tive cap -2-.  
–
Remove the bolts -3-  
and remove the voltage  
regulator.  
❑ Carbon brushes wear  
limit: 5 mm  
5 - Generator  
Protected by copyright. Copying for private or comme
permitted unless authorised by AUDI AG. AUDI AG
with respect to the correctness of information in th
4. Generator  
61  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
4.3  
Overview - Bosch Generator from 2001  
Note  
The generators were implemented as a running change.  
1 - Generator  
2 - Voltage Regulator  
❑ Removing and instal‐  
ling. Refer to  
⇒ “4.4 Voltage Regula‐  
tor, Bosch Generator  
from 2001, Removing  
and Installing”,  
page 63 .  
❑ Carbon brushes, check‐  
ing. Refer to  
⇒ “4.7 Carbon Brushes,  
Checking, All Bosch  
Generators from 2001”,  
page 65  
3 - Bolt  
❑ 2.5 Nm  
4 - Cover  
5 - Nut  
❑ 12 Nm  
6 - Nut  
❑ 30 Nm  
7 - Bolt  
❑ 3 Nm  
8 - Bolt  
❑ 1.5 Nm  
62  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
4.4  
Voltage Regulator, Bosch Generator  
from 2001, Removing and Installing  
Removing  
– Remove the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
– Remove the bolt -1- and the nuts -3 and 4-.  
– Remove the cover -2- on the rear side of the generator.  
– Remove the bolts -arrows-.  
– Remove voltage regulator.  
Installing  
– When installing the voltage regulator, make sure the carbon  
brushes rest correctly on the slip rings.  
Install in reverse order of removal, observing the following:  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
–perImnitstetdaullnltehsseaugtheonriseerdabtyoArU.DRI AeGfe. ArUtDoI A⇒G dEoelsencottrgicuaaralnEteqe uoripacmcepetnant;y Rliabeilpity.  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
•
Tightening specification. Refer to  
⇒ “4.3 Overview - Bosch Generator from 2001”, page 62 .  
4.5  
Overview - Bosch Generator from 2007  
Note  
The new generators are installed as a running change.  
4. Generator  
63  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
1 - Nut  
❑ 65 Nm  
2 - Ribbed Belt Pulley  
3 - Generator  
4 - Voltage Regulator  
❑ Removing and instal‐  
ling. Refer to  
⇒ “4.6 Voltage Regula‐  
tor, Removing and In‐  
stalling, Bosch Genera‐  
tor from 2007”,  
page 64 .  
❑ Carbon brushes, check‐  
ing. Refer to  
⇒ “4.7 Carbon Brushes,  
Checking, All Bosch  
Generators from 2001”,  
page 65  
5 - Bolt  
❑ 1.5 Nm  
6 - Cover  
7 - Bolt  
❑ 3 Nm  
8 - Bolt  
❑ 2.5 Nm  
4.6  
Voltage Regulator, Removing and In‐  
stalling, Bosch Generator from 2007  
Removing  
– Remove the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
– Remove the bolts -arrows-.  
– Remove the cover -1- on the rear side of the generator.  
64  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Remove the bolts -arrows-.  
– Remove voltage regulator -1-.  
Installing  
– When installing the voltage regulator, make sure the carbon  
brushes rest correctly on the slip rings.  
Install in reverse order of removal, observing the following:  
– Install the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
•
Tightening specification. Refer to  
⇒ “4.3 Overview - Bosch Generator from 2001”, page 62 .  
4.7  
Carbon Brushes, Checking, All Bosch  
Generators from 2001  
Procedure  
– Remove the voltage regulator: to 2007. Refer to  
⇒ “4.4 Voltage Regulator, Bosch Generator from 2001, Re‐  
moving and Installing”, page 63 , after 2007  
⇒ “4.6 Voltage Regulator, Removing and Installing, Bosch  
Generator from 2007”, page 64 .  
– Check the length -a- of the carbon brushes.  
•
Wear limit: -a- = 5 mm.  
– Install the voltage regulator: to 2007. Refer to  
⇒ “4.4 Voltage Regulator, Bosch Generator from 2001, Re‐  
moving and Installing”, page 63 , after 2007  
⇒ “4.6 Voltage Regulator, Removing and Installing, Bosch  
Generator from 2007”, page 64 .  
4.8  
Overview - Generator, Valeo through MY 2000  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
4. Generator  
65  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
1 - Generator  
2 - Voltage Regulator  
❑ Removing:  
–
Remove the nuts -5-  
and the cover -4-.  
–
Remove the bolt -6- and  
the nuts -7- and remove  
the voltage regulator.  
❑ Carbon brushes wear  
limit: 5 mm  
3 - Protective Cap  
4 - Cover  
5 - Nut  
❑ 2 Nm  
6 - Bolt  
❑ 2 Nm  
7 - Nut  
❑ 3.5 Nm  
❑ Quantity: 2  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
66  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
4.9  
Overview - Valeo Generator from 2001  
Note  
The generators were implemented as a running change.  
1 - Generator  
2 - Voltage Regulator  
❑ Removing and instal‐  
ling: to 2007. Refer to  
⇒ “4.10 Voltage Regula‐  
tor, Valeo Generator  
from 2001, Removing  
and Installing”,  
page 68 , after 2007  
⇒ “4.12 Voltage Regula‐  
tor, Removing and In‐  
stalling, Valeo Genera‐  
tor from 2007”,  
page 69  
❑ Check the carbon  
brushes: to 2007. Refer  
to  
⇒ “4.11 Carbon Brush‐  
es, Valeo Generator  
from 2001, Checking”,  
page 68 , after 2007  
⇒ “4.13 Carbon Brush‐  
es, Checking, Valeo  
Generator from 2007”,  
page 69  
3 - Bolt  
Pro
❑ 2 Nm  
per
4 - Cover  
5 - Protective Cap  
6 - Bolt  
❑ 2 Nm  
4. Generator  
67  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
4.10  
Voltage Regulator, Valeo Generator  
from 2001, Removing and Installing  
Removing  
– Remove the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
– Press the cover on the rear side of the generator off of the  
threaded pins -arrows-.  
Protected by copyrin whole, is not  
permitted unless acept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
– Remove the bolts -1- and the double bolt -2-.  
– Remove voltage regulator.  
Installing  
– Press the protective cap -2- off of the voltage regulator -1- in  
direction of -arrow-.  
– When installing the voltage regulator, make sure the carbon  
brushes rest correctly on the slip rings.  
– Install the protective cap with the voltage regulator installed.  
Install in reverse order of removal, observing the following:  
– Install the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
•
Tightening specification. Refer to  
⇒ “4.9 Overview - Valeo Generator from 2001”, page 67 .  
4.11  
Carbon Brushes, Valeo Generator from  
2001, Checking  
Procedure  
– Remove voltage regulator. Refer to  
⇒ “4.10 Voltage Regulator, Valeo Generator from 2001, Re‐  
moving and Installing”, page 68 .  
– Check the length -a- of the carbon brushes.  
•
Wear limit: -a- = 5 mm.  
– Install the voltage regulator. Refer to  
⇒ “4.10 Voltage Regulator, Valeo Generator from 2001, Re‐  
moving and Installing”, page 68 .  
68  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
4.12  
Voltage Regulator, Removing and In‐  
stalling, Valeo Generator from 2007  
Special tools and workshop equipment required  
♦ Feeler gauge 0.3 mm  
Removing  
– Remove the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
– Press the cover on the rear side of the generator off of the  
threaded pins in direction of -arrows-.  
– Remove the bolts -1- and the double bolt -2-.  
– Remove voltage regulator.  
Installing  
– Push a feeler gauge 0.3 mm -4- between the protective cap  
-2- and the carbon brushes -3-.  
– Pull the protective cap off until the bar of the protective cap  
presses the carbon brushes down.  
– After installation of the voltage regulator, press the protective  
cap all the way on.  
Install in reverse order of removal, observing the following:  
– Install the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
•
Tightening specification. Refer to  
⇒ “4.9 Overview - Valeo Generator from 2001”, page 67 .  
Protected by copyright. Copying for private
permitted unless authorised by AUDI AG.
with respect to the correctness of inform
4.13  
Carbon Brushes, Checking, Valeo Gen‐  
erator from 2007  
Special tools and workshop equipment required  
♦ Feeler gauge 0.3 mm  
4. Generator  
69  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Procedure  
– Remove voltage regulator. Refer to  
⇒ “4.12 Voltage Regulator, Removing and Installing, Valeo  
Generator from 2007”, page 69 .  
– Push a feeler gauge 0.3 mm -3- between the protective cap  
-2- and the carbon brushes.  
– Remove the protective cap from voltage regulator -1- in direc‐  
tion of -arrow-.  
– Check the length -a- of the carbon brushes.  
•
Wear limit: -a- = 5 mm.  
– With protective cap -2- installed, use feeler gauge -4- to press  
carbon brushes -3- down.  
– Push the protective cap off in direction of -arrow- until the bar  
of the protective cap presses the carbon brushes down.  
– Install the voltage regulator. Refer to  
⇒ “4.12 Voltage Regulator, Removing and Installing, Valeo  
Generator from 2007”, page 69 .  
Protected by copyright. Copying for private or commercial purposes, in part
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or
with respect to the correctness of information in this document. Copyrigh
4.14  
Ribbed Belt Pulley without Freewheel,  
Removing and Installing  
Special tools and workshop equipment required  
♦ Generator Belt Socket - 3310-  
®
♦
Inner hex socket 8 mm or TORX T50  
70  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
Removing  
– Remove the generator if necessary. Refer to ⇒ Electrical  
Equipment; Rep. Gr. 27 ; Generator; Generator, Removing  
and Installing .  
– For some engine types the removal can be performed with the  
generator still installed, here only the ribbed belt must have  
the tension released and be removed.  
– If present, press the protective cap off the generator pulley.  
– Counterhold nut using -3310- and rotate generator shaft clock‐  
wise to loosen it.  
– Remove ribbed belt pulley.  
Installing  
Install in reverse order of removal. Note the following:  
– Turn the generator shaft counterclockwise to tighten.  
– Clip protective cap onto generator pulley.  
Tightening specification  
Component  
Nm  
65  
Ribbed belt pulley to generator  
4.15  
Ribbed Belt Pulley with Freewheel, Re‐  
moving and Installing  
Special tools and workshop equipment required  
♦ Torque Wrench 1332 40-200Nm - VAG1332-  
♦ Adapter - T10474-  
♦ Multi-Tooth Adapter - 3400-  
♦ Socket - 3400/1-  
General Information  
There are different ribbed belt pulley with freewheel.  
Before removing check which special tool must be used for the  
removal of the ribbed belt pulley with freewheel.  
Caution  
The length of the ribbed belt is different depending on the rib‐  
bed belt pulley with freewheel installed.  
Check which ribbed belt pulley with freewheel is installed and  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
make sure that the correct ribbed belt will be installed. For the  
ribbed belt allocation. Refer to the PapretsrmCitteadtuanlloesgs a.uthorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
Characteristics of the Ribbed Belt Pulley with Freewheel  
-A- small ribbed belt pulley with freewheel, special tool to be used  
-T10474- or -3400/1-  
4. Generator  
71  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
-B- large ribbed belt pulley with freewheel, special tool to be used  
-3400-  
Note  
The ribbed belt for the large ribbed belt pulley with freewheel must  
be larger because it has a larger diameter.  
Removing  
– Remove the generator if necessary. Refer to ⇒ Electrical  
Equipment; Rep. Gr. 27 ; Generator; Generator, Removing  
and Installing .  
– For some engine types the removal can be performed with the  
generator still installed, here only the ribbed belt must have  
the tension released and be removed.  
– Clamp the generator in a vise at the mounting points.  
– If equipped, remove the protective cap from the decoupling  
belt pulley with freewheel.  
– Install the -T10474- or -3400- -1- in the belt pulley and attach  
a wrench.  
– Place a suitable tool -2- in the generator shaft.  
– Turn the generator shaft clockwise in direction of -arrow- to  
loosen and while doing so counterhold with the wrench.  
– Hold the ribbed belt pulleyPwroittehctefrdebey wcophyerigehlt.inCoppyliangcfeorbpryivahteaonrdcoamnmdercial purp
permitted unless authorised by AUDI AG. AUDI AG does not g
turn it at the generator shaft until the ribbed belt pulley with  
with respect to the correctness of information in this docume
freewheel can be removed.  
Installing  
Install in reverse order of removal. Note the following:  
The -VAG1332- must be rearranged for installing the decoupling  
belt pulley with freewheel as follows:  
– Release the insert -1- and remove it from the handle part -2-.  
– Turn the handle part -2- of the torque wrench 180° and reinsert  
the socket.  
– Set the rotation direction of the torque wrench socket to "left".  
– Next, screw the ribbed belt pulley with freewheel by hand onto  
the generator shaft until stop.  
– Install the -T10474- -1- ribbed belt pulley with freewheel and  
attach the wrench.  
72  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Place a suitable tool -2- in the generator shaft.  
– Turn the generator shaft using the -VAG1332- -3- counter  
clockwise to tighten the ribbed belt pulley with freewheel.  
– Clip protective cap onto generator pulley.  
Tightening Specification  
Component  
Tightening  
Specification  
Ribbed belt pulley with freewheel to generator  
80 Nm  
4.16  
Ribbed Belt Pulley with Freewheel,  
Checking  
Procedure  
•
The ribbed belt pulley with freewheel is removed. Refer to  
⇒ “4.15 Ribbed Belt Pulley with Freewheel, Removing and In‐  
stalling”, page 71 .  
– Hold the inner ring -2- on the ribbed belt pulley with one hand  
using the thumb and index finger and the outer ring -1- with  
the other hand using the thumb and index finger.  
– Hold the inner ring tight and turn the outer ring in the rotation  
direction of the generator.  
•
If the free-running hub is intact, the outer does not turn.  
– Hold the inner ring tight and turn the outer ring opposite the  
rotation direction of the generator.  
•
If the free-running hub in intact, the outer ring turns with slight  
resistance.  
Replace the ribbed belt pulley if the free-running hub does not  
function as described.  
4.17  
Overview - Hitachi Generator  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
4. Generator  
73  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
1 - Generator  
2 - Screw  
❑ 2 Nm  
❑ Quantity: 4  
3 - Voltage Regulator  
❑ Removing and Instal‐  
ling. Refer to  
⇒ “4.18 Voltage Regula‐  
tor, Removing and In‐  
stalling - Hitachi Gener‐  
ator”, page 74 .  
❑ Carbon brushes, check‐  
ing. Refer to  
⇒ “4.19 Carbon Brush‐  
es, Checking, Hitachi  
Generator”, page 75  
4 - Nut  
❑ 4 Nm  
❑ Quantity: 2  
5 - Cover  
6 - Screw  
❑ 4 Nm  
❑ Quantity: 6  
7 - Protective Cap  
Protected by copyright. Copying
8 - Nut  
❑ 11 Nm  
permitted unless authorised by
with respect to the correctnes
4.18  
Voltage Regulator, Removing and In‐  
stalling - Hitachi Generator  
Special tools and workshop equipment required  
♦ Torque Wrench 1410 - VAG1410-  
♦ Torque Screwdriver - VAG1624-  
Removing  
– Remove the generator. Refer to ⇒ Electrical Equipment; Rep.  
Gr. 27 ; Generator; Generator, Removing and Installing .  
74  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
– Remove the nut -2-.  
– Remove the protective cap -3-.  
– Remove the bolts -4-.  
– Remove the cover -1-.  
– Remove the screws -3-.  
– Remove the nuts -2-.  
– Remove the voltage regulator -1-.  
Installing  
Install in the reverse order of removal while noting the following:  
– When installing the voltage regulator, make sure the carbon  
brushes rest correctly on the slip rings.  
– Install the generator. Refer to ⇒ Electrical Equipment; Rep.  
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not  
Gr. 27 ; Generator; Generator, Removing and Installing .  
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability  
with respect to the correctness of information in this document. Copyright by AUDI AG.  
4.19  
Carbon Brushes, Checking, Hitachi  
Generator  
Procedure  
– Remove the voltage regulator. Refer to  
⇒ “4.18 Voltage Regulator, Removing and Installing - Hitachi  
Generator”, page 74 .  
– Check the length -a- of the carbon brushes -1-.  
•
Wear limit: -a- = 6.5 mm.  
– Install the voltage regulator. Refer to  
⇒ “4.18 Voltage Regulator, Removing and Installing - Hitachi  
Generator”, page 74 .  
4. Generator  
75  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
5
Special Tools  
Special tools and workshop equipment required  
♦ Analog/Digital Multimeter - FLU83III-  
♦ Puller - Bevel Gear - T10474-  
♦ Torque Wrench 1332 40-200Nm - VAG1332-  
Protected by copyright. Copying for private or commercial purposes, in part or in w
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept
with respect to the correctness of information in this document. Copyright by AU
♦ Inner Hex Socket 8 mm or TORX T50  
♦ Battery Charger - VAS5095A-  
76  
Rep. Gr.27 - Starter, Generator and Cruise Control  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
♦ Battery Tester with Printer - VAS5097A-  
♦ Battery Charger - VAS5900-  
♦ Battery Charger - VAS5903-  
♦ Battery Charger - VAS5906-  
Protected by copyright. Copying ft  
permitted unless authorised by Ay  
with respect to the correctness
5. Special Tools  
77  
Audi A1 2011 ➤ , Audi A1 Sportback 2018 ➤ , Audi A2 2001 ➤ , Audi A3 20 ...  
Electrical Equipment General Information - Edition 08.2019  
♦ Solar Battery Maintainer - VAS6102A-  
♦ Battery Tester - VAS6P1ro6te1c-ted by copyright. Copying for private or commercial purposes,
permitted unless authorised by AUDI AG. AUDI AG does not guaran
with respect to the correctness of information in this document. Co
♦ Generator Belt Socket - 3310-  
♦ Multi-Tooth Adapter - 3400-  
78  
Rep. Gr.27 - Starter, Generator and Cruise Control  

Related Topics

Battery
General Information Battery Types Warnings and Safety Precautions Battery Post/Terminal
Battery, Checking
Test Sequence Visual Inspection Visual Indicator Color Display, Checking Battery Test with Vehicle Diagnostic Tester Battery Tester VAS6161 Battery Tester with Printer VAS5097A Current Draw Test Battery, Checking Resting Voltage, Vehicles in Storage or Inventory
Charging
Battery Charger VAS5095A Battery Charger VAS5900 Battery Charger VAS5903 Battery Charger VAS5906 Solar Battery Maintainer VAS6102A Severely Discharged Batteries
Generator
Generator, Checking
Overview - Generator, Bosch through MY 200 Overview - Bosch Generator from 2001 Voltage Regulator, Bosch Generator from 2001, Removing and Installing Overview - Bosch Generator from 2007 Voltage Regulator, Removing and Installing, Bosch Generator from 2007 Carbon Brushes, Checking, All Bosch Generators from 2001 Overview - Generator, Valeo through MY 2000 Overview - Valeo Generator from 2001 Voltage Regulator, Valeo Generator from 2001, Removing and Installing Carbon Brushes, Valeo Generator from 2001, Checking Voltage Regulator, Removing and Installing, Valeo Generator from 2007 Carbon Brushes, Checking, Valeo Generator from 2007 Ribbed Belt Pulley without Freewheel, Removing and Installing Ribbed Belt Pulley with Freewheel, Removing and Installing Ribbed Belt Pulley with Freewheel, Checking Overview - Hitachi Generator Voltage Regulator, Removing and Installing - Hitachi Generator Carbon Brushes, Checking, Hitachi Generator
Windshield Washer System

Popular Owner Manuals

Audi
Audi
BMW
BMW
Citroen
Citroen
Ford
Ford
Honda
Honda
Peugeot
Peugeot