Get Checking and topping up fluids -> Battery Guide for Audi RS6 4 Door Fourth Generation (2019-2025)

Checking and topping up fluids

It will not be possible to restart the vehicle once

you have switched it off. The performance of cer-

tain vehicle functions may be limited and the ve-

hicle’s handling may be impaired. Drive to a

qualified workshop without delay.

the electrical equipment is powered back or

switched off. Certain convenience features, such

as interior lighting or electric seat adjustment,

may not be available. These functions will be re-

stored when you activate the drive system.



Electrical system: fault. Please contact

Even though some systems are deactivated auto-

matically, certain electrical equipment continues

to draw current even when the ignition is off. If

the vehicle is left standing for long periods, this

can result in total 12-volt battery discharge. If

the vehicle battery is allowed to discharge com-

pletely, an internal chemical reaction damages

the battery irreparably. To avoid this, the battery

should be recharged at least once a month

ðpage 247. Please seek advice from a qualified

workshop.

workshop

Switch off any electrical equipment which is not

required (some equipment may be switched off

automatically). The performance of certain vehi-

cle functions may be limited and the vehicle’s

handling may be impaired. Drive to a qualified

workshop without delay.



Electrical system: low battery charge. Bat-

tery will be charged while driving

– If this message disappears after a while, the ve-

hicle battery will have been sufficiently charged

while driving.

Winter conditions

Cold weather is very hard on the 12-volt vehicle

battery. For this reason, you should have the bat-

tery checked by a qualified workshop before the

start of winter.

– If the message does not disappear again, drive

to a qualified workshop and have the fault rec-

tified.

Replacing the battery

WARNING

The following description applies to the 12-volt

vehicle battery. Any work on the battery must al-

ways be carried out by a qualified workshop.

An electrical system fault can cause vehicle

functions to fail, thus impairing the vehicle’s

stability – risk of accident! Switch the vehicle

off and do not drive on. Seek professional as-

sistance.

The 12-volt vehicle battery has been developed

for use in its installation location and is equipped

with safety features. If a 12-volt vehicle battery

has to be replaced, please enquire about the

electromagnetic compatibility, capacity and the

required maintenance, performance and safety

features of the new 12-volt vehicle battery be-

fore purchasing it from your qualified workshop.

The gas vent on the 12-volt vehicle battery must

always be located on the side of the negative ter-

minal. The gas vent on the side of the positive

terminal must always be sealed.

Battery

Information on batteries

Because of the complexity of the power supply,

any battery work, such as disconnection, replace-

ment, etc. must be carried out by a qualified

workshop ð

Several batteries using different technologies are

fitted in your vehicle:

When replacing the 12-volt lead battery, use only

maintenance-free 12-volt lead batteries to

standards TL 825 06 and VW 7 50 73. These

standards must be from October 2014 or later.

– 12-volt vehicle battery (e.g. for basic supply)

ðpage 246, Safety information on batteries

If the vehicle is not used for long periods

WARNING

The 12-volt battery gradually becomes dis-

charged if the vehicle is left standing for long pe-

riods. To ensure that the vehicle can be started,

– Any work on the batteries and electrical sys-

tem in your vehicle entails a risk of injury



245

Checking and topping up fluids

Safety information on batteries

Explanation of warning symbols:

and chemical burns in addition to danger of

accident or fire. For this reason, you must

have the work carried out by a qualified

workshop.

Sym Description

bol

– Always have the 12-volt vehicle battery re-

placed by a qualified workshop because the

vehicle electronics must be calibrated as

part of the replacement procedure. Only

qualified workshops have the equipment re-

quired in order to perform the calibration

correctly. If the correct equipment is not

used, safety-related functions may fail – risk

of accident!

 ^{Observe all warnings – risk of injury!}

/ Always read the instructions in the Own-



er’s Manual.

12-volt vehicle battery. High-voltage com-

ponent. Improper handling can cause

short circuits ð in Information on bat-

teries on page 245.



– Using a 12-volt vehicle battery that does not

have the same specifications or dimensions

as the factory-fitted 12-volt vehicle battery

can cause short-circuits or fires. Serious or

fatal injuries may occur as a result.

– Only maintenance-free and leak-proof 12-

volt vehicle batteries that have the same

specifications and dimensions as the facto-

ry-fitted 12-volt vehicle battery may be

used.

With the exception of jump-starting and

charging the 12-volt vehicle battery, all

work on the 12-volt vehicle battery must

 ^{be performed by a qualified workshop}

in Information on batteries on

page 245 ð in Information on batteries

on page 246.

Electrolyte is extremely corrosive. Always

wear protective gloves and safety glasses.

First aid: If electrolyte comes into contact

with the eye, rinse the eye immediately

with fresh water for several minutes. Seek

medical assistance without delay. Neutral-

ise any electrolyte spilt on skin or clothing

immediately with soapy water and rinse

with plenty of fresh water. If electrolyte is

drunk by accident, seek the assistance of a

doctor immediately.



CAUTION

– If the car is left standing for long periods,

protect the 12-volt vehicle battery from

frost. The battery will be damaged irrepara-

bly if it is allowed to freeze ðpage 247,

Charging the 12-volt vehicle battery.

– Always have the 12-volt vehicle battery re-

placed by a qualified workshop because the

vehicle electronics must be calibrated as

part of the replacement procedure. Only

qualified workshops have the equipment re-

quired in order to perform the calibration

correctly.

 ^{Always wear safety glasses.}

If electrolyte comes into contact with the



eye, rinse the eye immediately with fresh

water for several minutes. Seek medical

assistance without delay.

– If a battery is used that does not meet the

quality specifications set by Audi, or that

has a battery capacity that is too low, the

vehicle’s certification for use on public roads

is void and thus also the vehicle’s registra-

Keep open flames, sparks, uncovered



lights and lit cigarettes away from the

battery! Avoid sparks and short-circuits

when handling cables and electrical equip-

ment.

tion ð



For the sake of the environment

 Batteries and electric/electronic equip-

ment must be disposed of appropriately

ðpage 291, Information on waste disposal.

246

Checking and topping up fluids

►

Switch off all electrical equipment and the vehi-

cle.

Open the bonnet ðpage 236.

Open the cap on the positive terminal

ðFig. 134.

Carefully and correctly connect the charger ca-

bles (according to the manufacturer’s instruc-

tions for the battery charger) to the positive

Sym Description

bol

►

Always keep children away from batteries



and electrolyte.

A highly explosive mixture of gases may

be given off when the battery is under

charge!

►



terminal

and then to the earth point - .

WARNING

►

Connect the battery charger to the mains and

switch it on.

Keep the bonnet fully open while charging

Any work on the batteries must always be car-

ried out by a qualified workshop.

– Any gases escaping from batteries may be

toxic or flammable.

After charging the battery: switch off the bat-

tery charger and disconnect the mains cable.

Now disconnect the charger cables. First from

the earth point

nal + .

– The substances contained in batteries can

be corrosive. If the contents of the battery

come into contact with your skin, rinse the

affected area with clean water for at least

15 minutes and then wash with soap. Have

the affected area examined by a doctor.

and then the positive termi-

►

Close the cap on the positive terminal.

Close the bonnet ðpage 236.

Information on charging

Charging the 12-volt vehicle battery

– Use only the terminals in the engine compart-

ment to charge the battery.

– Important: Before you charge the battery make

sure you read the manufacturer's instructions

for using the battery charger.

– If the 12-volt vehicle battery can no longer be

charged, it has been discharged totally and

should be replaced. Please contact a qualified

workshop.

WARNING

Fig. 134 Engine compartment: Terminals for jump leads

or battery charger

– Never use unsuitable charging equipment or

charging equipment which is visibly dam-

aged and/or dirty. Always check the charg-

ing equipment for damage before use.

– Charging cables or jump leads for the nega-

tive terminal must never be connected di-

rectly to the 12-volt battery on your vehicle.

Only use the earth point on the vehicle body

in the engine compartment ðpage 247.

– A highly explosive mixture of gases may be

given off when the battery is under charge.

Only charge the battery in a well ventilated

area.

Please read the safety information ðpage 234,

Safety information on the engine compartment,

in Information on batteries on page 245

and ð

Information on the 12-volt battery charger

Important: Only use battery chargers with a max-

imum charging voltage of 14.8 V. The battery

cables remain connected.

Connecting the charger

The terminals for the charging cables are located

– When it is discharged the battery can freeze

at temperatures around 0°C. You must not

in the engine compartment. The earth point

always on the vehicle's body.

–



247

Checking and topping up fluids

use a battery which has frozen, even after it

has thawed, because the ice may have

cracked the battery casing and allowed the

electrolyte to escape – risk of explosion and

chemical burns! Please seek advice from a

qualified workshop.

CAUTION

– The anti-freeze concentration must be

matched to the climate of the country in

which you are driving. If the concentration is

too high, damage to the car may result.

– Never put in radiator anti-freeze or other

additives.

– Do not connect or disconnect the charging

cables during the charging process – risk of

explosion!

– Never use washer fluid which contains paint

thinners or solvents as it can damage the

paintwork.

– Leave the bonnet open while the 12-volt ve-

hicle battery is charging. Closing the bonnet

could cause an electrical short circuit – risk

of fire!

Driver messages about the windscreen

washer system

Windscreen washer

system

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:

Filling the windscreen washer system



Please add washer fluid

With the vehicle switched off, top up the fluid for

the windscreen washer and headlight washer sys-

tem ðpage 248 and ð in Filling the wind-

screen washer system on page 248.

Service interval display

Information on the service interval display

The service interval display detects when the next

service is due for your vehicle.

Fig. 135 Engine compartment: Cap of windscreen washer

container

There are two service interval display levels:

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.

– Inspection or oil change reminder: After a cer-

tain mileage, a service reminder will appear in

the instrument cluster display each time the ig-

nition is switched on/off. The distance or time

remaining will be shown briefly.

The container for the windscreen washer  con-

tains the cleaning fluid for the windscreen/rear

window and the headlight washer system

ðpage 237. For the container capacity, please

refer to ðpage 288.

– Inspection or oil change due: When your vehi-

cle is due for an inspection, oil change or both,

the corresponding reminder Inspection due!,

Oil change due! or Oil change and inspection

due! will appear briefly after you switch the ig-

nition on/off.

Clean water should be used when topping up. If

possible, use soft water to prevent scaling on the

washer jets, or ideally, distilled water. Always

add washer fluid to the water. In cold weather

you should add anti-freeze to the water to pre-

vent it from freezing.

Resetting the display

Your qualified workshop resets the service inter-

val display after each service.



248

Checking and topping up fluids -> Battery for Your Audi RS6 4 Door Fourth Generation (2019-2025)

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