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

Checking and topping up fluids

Information on petrol

Checking and topping up

fluids

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

Fuel

The vehicle is equipped with a catalytic converter

and must only be run on unleaded petrol. Petrol

must be sulphur-free and must comply with the

EN 228 fuel quality standard or equivalent. The

petrol grades have different octane (RON) or An-

ti-Knock Index (AKI) ratings.

1)

Identification of fuels

In countries where sulphur-free fuel is not availa-

ble, you may use low-sulphur fuel instead.

The following headings relate to the sticker on

the inside of your vehicle's fuel tank flap (exam-

ple):

Fig. 119 Fuel tank flap sticker: Identification of fuels (ex-

amples)

95 RON/ROZ or min. 91 RON/ROZ

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

The use of premium petrol (95 RON / 91 AKI) is

recommended. If that type of fuel is not availa-

ble, regular petrol (at least 91 RON / 87 AKI) can

be used with a slight loss of power.

The symbols signify different fuels. Depending on

the fuel, the individual symbols may be found on

the vehicle’s fuel tank flap. In some countries,

you will also find the information on the fuel

pumps. This is intended to help prevent incorrect

fuel from being used. Only fill the tank with the

fuel types shown on the vehicle’s fuel tank flap.

min. 95 RON/ROZ

Premium petrol (at least 95 RON / 91 AKI) must

be used.

If premium petrol is not available, the engine can

be run on regular petrol with 91 RON / 87 AKI as

an emergency measure. In this case only use

moderate engine speeds and a light throttle. Fill

up with premium or Super Plus petrol as soon as

possible.

–

1 Petrol with ethanol: “E” stands for ethanol.

The number refers to the proportion of ethanol

in the petrol. For example, “E5” means that the

fuel contains a maximum of 5% ethanol.

2 Petrol with ethanol: “E” stands for ethanol.

The number refers to the proportion of ethanol

in the petrol. For example, “E10” means that

the fuel contains a maximum of 10% ethanol.

3 Diesel with biodiesel: “B” stands for biodie-

sel. The number refers to the proportion of bio-

diesel in the diesel. For example, “B7” means

that the fuel has a maximum of 7% biodiesel

content.

98 RON/ROZ or min. 95 RON/ROZ

The use of Super Plus petrol (98 RON / 93 AKI) is

recommended. If that type of fuel is not availa-

ble, premium petrol (at least 95 RON / 91 AKI)

can be used with a slight loss of power.

If premium petrol is not available, the engine can

be run on regular petrol with 91 RON / 87 AKI as

an emergency measure. In this case only use

moderate engine speeds and a light throttle. Fill

up with premium or Super Plus petrol as soon as

possible.

–

4 Diesel: “XTL” stands for paraffinic diesel.



1)

May vary in different countries.

225

Checking and topping up fluids

Information on petrol grade

Information on diesel

You can use higher octane fuel than your engine

requires.

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

Octane rating for vehicles with petrol engine

for Republic of Korea

The use of sulphur-free diesel complying with

the EN 590 standard is recommended.

Vehicles with petrol engine must always be filled

with high-grade petrol with an octane rating of at

least 94 RON. If no high-grade petrol is available,

standard petrol (91 RON / 87 AKI or higher) can

be used as an emergency measure only. Using

standard petrol (91 RON / 87 AKI or higher oc-

tane rating) may reduce the engine performance

and increase fuel consumption.

Diesel can thicken at very low temperatures,

which can result in problems starting the engine

or prevent the engine from running smoothly.

For this reason, filling stations in some countries

offer winter-grade diesel during the cold months

so that you can continue to operate your vehicle

reliably. Ask at your filling station whether the

diesel available there is suitable for the current

conditions and for the temperatures which could

potentially occur.

CAUTION

– Do NOT fuel your vehicle with high-ethanol

fuel blends (e.g. E30 – E100). This will dam-

age the fuel system.

Special regulations for vehicles with diesel

engine for Republic of Korea

– Do NOT fuel your vehicle with high-metha-

nol fuel blends (e.g. M15 – M100). Damage

will occur to the fuel system and the engine.

– Even one tankful of leaded fuel would per-

manently impair the efficiency of the cata-

lytic converter.

To ensure that the vehicle complies with the

emission standards, additives with the specifica-

tions stipulated by the manufacturer must be

used and added.

CAUTION

– Audi recommends that you use only addi-

tives approved by Audi. Additives with so-

called octane boosters or antiknock addi-

tives can contain metallic additives that

cause significant damage to the engine and

the catalytic converter. Do not use such ad-

ditives.

– Never use FAME fuels (biodiesel), petrol,

heating oil, thinners or any other fuels or

additives, as these could cause serious dam-

age to the fuel system and the engine.

– Never start the engine if you fill up with the

wrong type of fuel, as this could damage

the fuel system and the engine. Seek pro-

fessional assistance.

– Metal-based fuels, which can be identified

from the marking on the fuel dispenser,

must not be used. LRP fuel (lead replace-

ment petrol) also contains high concentra-

tions of metallic additive. Risk of engine

damage!

1)

Information on paraffinic diesel

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

– High engine speed and full throttle can

damage the engine when using petrol with

an octane rating lower than the correct

grade for the engine.

You can use sulphur-free paraffinic diesel that

complies with the EN 15940 standard if the

“XTL” symbol is on the sticker inside your vehi-

cle’s fuel tank flap. You must not use this fuel if

the symbol is not on the sticker.

Please also refer to the description of diesel

ðpage 226.

1)

This fuel is available in certain countries only.

226

Checking and topping up fluids

Filling the tank

Driver messages about the tank system

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:

Driver messages

If the indicator lamp  lights up and a corre-

sponding message appears, you should add fuel

to the vehicle’s tank.

Fig. 121 Fuel tank flap with tank cap attached

The fuel tank flap is unlocked/locked automati-

cally by the central locking system. The fuel tank

flap is not locked when you lock the vehicle from

the inside by pressing the central locking switch.

 Tank system malfunction! Please contact

workshop

There is a malfunction in the tank system. Drive

to a qualified workshop without delay and have

the fault rectified.

Preparing to fill the fuel tank

►

Switch the drive system off.

Vehicle refuelled. Reset km/miles now?

►

Press the left side of the flap to open it

ðFig. 120.

Select Yes if you want to reset the trip recorder

to zero.

Putting fuel in the fuel tank

The display of this message depends on the

amount of fuel in the tank and the amount of

fuel added.

►

Unscrew the tank cap anti-clockwise.

Hook the cap onto the open flap ðFig. 121.

Insert the filler nozzle into the fuel filler neck

►

as far as the stop.

►

Filling the fuel tank

Start refuelling. The filler nozzle cuts out as

soon as the fuel tank is full ð

.

►

When the fuel filler pump switches itself off,

wait for 5 seconds before pulling out the filler

nozzle so that any remaining fuel can flow into

the tank opening.

►

Screw on the tank cap clockwise until it clicks

audibly.

Press the left side of the flap to close it (you

should hear it click into place).

The correct fuel grade for your vehicle is given on

a sticker on the inside of the fuel tank flap. Fur-

ther notes on fuel ðpage 225.

Fig. 120 Vehicle as seen from the rear right: Opening fuel

tank flap

The tank capacity of your vehicle is given in the

Technical data section ðpage 288. The maxi-

mum possible amount of fuel that can be added

depends on the amount remaining in the tank.



227

Checking and topping up fluids

To prevent fuel and vapours from escaping, make

sure that the fuel tank is properly sealed; other-

¹⁾

– The filler nozzle cuts out as soon as the fuel

tank is full. Do not try to put in more fuel af-

ter the nozzle cuts out, as this will fill the

expansion chamber in the fuel tank. Do not

try to put in more fuel after the automatic

filler nozzle has switched off; this may cause

the fuel to overflow if it becomes warm, po-

tentially at a later point in time. This can

cause explosion, fire and serious or fatal in-

juries.

wise the indicator lamp

will light up.

Information on vehicles with diesel engine

– Diesel vehicles are equipped with an incorrect

2)

fuelling protection system . This system en-

sures that the tank can only be fuelled from a

diesel filler nozzle.

– If the filler nozzle is old, damaged or too small,

it may not be able to open the protection mech-

anism on the fuel tank. In this case, try turning

the filler nozzle before inserting it in the fuel

filler neck, use a different filling pump or seek

professional assistance.

WARNING

Audi recommends you NOT to carry a spare

fuel canister in the vehicle. Fuel could escape

from the canister and catch fire, particularly

in the event of an accident. Fire, explosions

and injuries could result.

– The protection mechanism will not open if you

try to add fuel from a spare fuel canister. You

can get round this simply by adding the diesel

slowly.

– If, in exceptional circumstances, you have to

carry a spare fuel canister, please observe

the following warnings:

WARNING

– Always place the spare fuel canister on the

ground before filling it. Never fill fuel into

the spare fuel canister with the canister

placed in or on top of the vehicle. Electro-

static electricity can build up while filling

the canister and ignite the fuel vapours.

– When using metal fuel canisters, always

keep the filler nozzle in contact with the

canister to prevent the build-up of static

electricity.

Improper refuelling and improper handling of

fuel can cause explosions, fire, serious burns

and other injuries.

– Do not smoke. Keep naked flames away

from the vehicle.

– The ignition must be switched off when re-

fuelling.

– Mobile phones and radio equipment must

always be switched off when refuelling.

Electromagnetic radiation can cause sparks

which could start a fire.

– Keep the filler nozzle inserted as far as

possible into the filler opening while fill-

ing the canister.

– The auxiliary heating must be switched off

when refuelling.

– Observe all relevant local regulations on

using, storing and transporting spare fuel

canisters.

– Fuel can escape if you do not insert the filler

nozzle all the way into the filler neck. Escap-

ing fuel can ignite and cause a fire.

– Never get into the vehicle while refuelling. If

you do have to get into the vehicle in excep-

tional circumstances, close the door and

touch a metal surface before handling the

filler nozzle again. This will discharge any

static electricity which could generate

sparks. Sparks can start a fire when refuel-

ling.

CAUTION

– If fuel overflows onto the vehicle, remove it

completely straight away to prevent dam-

age to the vehicle.

– Never run the tank completely dry. If there

is an irregular fuel supply, misfiring can oc-

cur. As a result unburnt fuel can enter the



1)

Depends on engine and country

2)

Depending on country

228

Checking and topping up fluids

exhaust system and cause damage to the

catalytic converter(s).

It is not sufficient to simply have AdBlue refilled

when the vehicle is serviced because this may be

necessary more often than services are due or be-

tween service intervals.

– Vehicles with diesel engine: When filling

the fuel tank after having run it completely

dry, the ignition must be switched on for at

least 30 seconds without starting the en-

gine. When you then start the engine it may

take longer than normal (up to one minute)

for the engine to start firing. This is because

air needs to be bled from the fuel system

while starting.

As soon as a message appears in the instrument

cluster display reminding you to refill AdBlue,

you must refill the AdBlue tank or have this done

by a qualified workshop ðpage 230.

Checking range

The AdBlue consumption depends on the ambi-

ent and operating temperature and on how the

vehicle is driven. The estimated remaining range

can be viewed in the instrument cluster display

For the sake of the environment

– Do not try to put in more fuel after the au-

tomatic filler nozzle has switched off; this

may cause the fuel to overflow if it becomes

warm.

ðpage 17, Instrument cluster controls and

ðpage 17, Fig. 3.

1

Legal information

– Never pour fuel down drains or into the

ground.

– It is not permitted to make technical changes

to the emission control system which have an

effect on the exhaust gas treatment using

AdBlue.

Having the fuel tank flap released

manually

– Audi has approved this vehicle for use only with

AdBlue corresponding to ISO-22241-1, for

which the Certificate of Conformity for this type

of vehicle has been issued.

►

If you cannot open the fuel tank flap, seek pro-

fessional assistance.

Then drive to a qualified workshop and have the

fault rectified.

►

– It may be a crime to operate the vehicle without

the AdBlue which corresponds to ISO-22241-1.

– If the emission control system is not operated

as intended, the exhaust emissions may wor-

sen.

Selective catalytic

reduction (AdBlue/DEF)

Introduction

– The use of AdBlue for the operation of this vehi-

cle is required by law.

On vehicles with selective catalytic reduction, a

urea solution (AdBlue/DEF) is injected into the

exhaust system upstream of a NOx catalytic con-

verter in order to reduce nitrogen oxide emis-

sions. The catalytic converter changes nitrogen

oxides into nitrogen and water with the help of

the urea solution AdBlue/DEF. The urea solution

is known as AdBlue or DEF (Diesel Exhaust Fluid).

The term AdBlue is used below.

Information on AdBlue

– The instrument cluster display will tell you how

far you can drive before the tank runs dry

ðpage 230, Low AdBlue level. If the AdBlue

tank runs dry, the engine cannot be started

again after you switch off the ignition. Never

run the AdBlue tank completely dry.

– Please follow the AdBlue manufacturer's in-

structions for storage and use.

The AdBlue is held in a separate tank in the vehi-

cle. AdBlue consumption is normally between

1.0 ltr. – 2.5 ltr./1000 km. In individual cases,

the consumption may be different as a result of

how the vehicle is driven along with the operat-

ing and ambient temperature.

– Restrictions may be encountered when refilling

in very cold temperatures, because the freezing

point of AdBlue is -11 °C.



229

Checking and topping up fluids

– The system is heated when the vehicle is run-

ning to ensure that the exhaust gas treatment

operates even at very low temperatures.

fluid has been added or there is a system fault, a

driver message will appear.

 Please check AdBlue/DEF. See owner's man-

ual

Driver messages about AdBlue/DEF

This message appears if the system detects that

the tank has been filled with the wrong fluid or

with non-standard AdBlue or if there is a system

fault. Drive to a qualified workshop and have the

fault rectified.

The display informs you if the AdBlue level is too

low or if a system malfunction occurs.

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:

 AdBlue/DEF: fault. No restart in x km. See

owner's manual

Low AdBlue level

This message appears if the system detects that

the tank has been filled with the wrong fluid or

with non-standard AdBlue or if there is a system

fault and the vehicle can only be driven as far as

indicated in the instrument cluster. Drive to a

qualified workshop and have the fault rectified.

Otherwise, after driving the maximum distance

and switching off the engine, you will not be able

to restart the car.

A series of warnings will inform you if the

amount of AdBlue in the tank falls below a cer-

tain level. You should always fill up with AdBlue

when requested to do so on the instrument clus-

ter display.

 Please refill at least x ltr. of AdBlue/DEF the

next time you refuel. Range x km

This message tells you the maximum distance

that you can drive with the remaining amount of

AdBlue. Refill AdBlue.

 AdBlue/DEF: fault. Engine cannot be restar-

ted. See owner's manual

 Refill at least x ltr. of AdBlue/DEF. No re-

start in x km. See owner's manual

This message appears if the system detects that

the tank has been filled with the wrong fluid or

with non-standard AdBlue or if there is a system

fault. Drive to the nearest qualified workshop

without delay and have the fault rectified. You

will not be able to restart the car after you switch

off the engine.

This message tells you the maximum distance

that you can drive with the remaining amount of

AdBlue. Refill AdBlue. Otherwise, after driving

the maximum distance and switching off the en-

gine, you will not be able to restart the car. You

can also call up the remaining distance on the on-

board computer.

Before refilling AdBlue

 Refill at least x ltr. of AdBlue/DEF. Engine

cannot be restarted. See owner's manual

This message appears when there is no more

AdBlue left in the tank. Refill AdBlue. Otherwise,

you will not be able to restart the car after you

switch off the engine.

When the AdBlue in the tank reaches the mini-

mum level, you must add AdBlue ðpage 230,

Before refilling AdBlue.

Fig. 122 Vehicle as seen from the rear right: Unscrewing

the AdBlue cap

Filling the wrong fluid / system fault

The AdBlue filler neck is located immediately be-

side the diesel filler neck.

If you fill the AdBlue tank with a fluid other than

AdBlue and the system detects that the wrong



230

Checking and topping up fluids

The AdBlue tank capacity on your vehicle is given

in the Technical data section ðpage 288.

– Keep AdBlue away from clothing. Wash

thoroughly with clean water should you

come into contact with this fluid.

When the instrument cluster displays the re-

quest to fill up AdBlue, fill up at least the

amount of AdBlue displayed. If you do not refill

this amount of fluid, the system may not detect

that the tank has been refilled and it may not be

possible to restart the engine.

Refilling AdBlue from a filler nozzle

You can fill AdBlue from pumps for either light

passenger vehicles or heavy goods vehicles.

►

Fill up with AdBlue until the first time the filler

►

Park the vehicle on a level surface.

nozzle cuts off the supply ð

.

►

Switch off the ignition.

►

Put the tank cap back on ðpage 232, After re-

filling AdBlue.

►

Open the fuel tank flap ðpage 227.

►

Unscrew the cap on the filler neck anti-clock-

wise ðFig. 122.

Refill AdBlue from a filler nozzle ðpage 231,

CAUTION

►

– The handle of the filler nozzle must point

downwards when filling the tank. Otherwise

the filler nozzle will not cut off the supply

automatically ð in Before refilling AdBlue

on page 231.

canister ðpage 231 or bottle ðpage 232.

WARNING

AdBlue can cause irritation to the skin, eyes,

and respiratory organs. Wash thoroughly with

clean water should you come into contact

with this fluid. Seek medical assistance if nec-

essary.

– Do not use a damaged filler nozzle in case it

does not cut off the supply properly.

– You should stop refilling the first time the

filler nozzle automatically cuts off the sup-

ply. Otherwise the level of AdBlue in the

tank may be too high and AdBlue could

overflow ð in Before refilling AdBlue on

page 231.

CAUTION

– Improper handling of AdBlue can cause

damage to the vehicle not covered by the

warranty.

– Use only AdBlue that complies with the ISO

22241-1 standard. Do not mix AdBlue with

additives and do not dilute it with water.

– AdBlue must not be added to the diesel

tank, and diesel must not be added to the

AdBlue tank. Never start the engine if you

fill up with the wrong type of fuel, as this

could damage the tank system and the en-

gine. Seek professional assistance.

Refilling AdBlue from a canister

– AdBlue attacks surfaces such as paintwork,

plastic veneer and carpets. Remove spilt flu-

id as soon as possible with a damp cloth and

plenty of water. If the AdBlue has already

solidified, use warm water and a sponge.

Residues of AdBlue solidify after a while if

they are not removed and can damage the

affected surface.

Fig. 123 Canister with screw-on hose

Your qualified workshop can tell you which refill

canisters are approved for your vehicle. Approved

refill canisters contain about 5 litres of AdBlue.

►

Take the cap off the refill canister ð

fore refilling AdBlue on page 231, ð

fore refilling AdBlue on page 231.

in Be-

– Do not keep refill bottles or canisters in the

vehicle, as AdBlue can leak and damage the

vehicle interior.



231

Checking and topping up fluids

►

Screw the end of the hose 1 clockwise onto

the opening on the canister A .

Remove the cap 2 from the other end of the

After refilling AdBlue

Closing the filler neck

►

hose B .

►

Screw the AdBlue cap clockwise onto the filler

►

Fit the end of the hose 2 onto the filler neck

on the vehicle and turn clockwise as far as the

stop to secure.

Lift the canister and then tilt it. Keep it tilted

until empty or until no more fluid runs into the

tank.

neck until the AdBlue cap clicks audibly ð

Before refilling AdBlue on page 231, ð

Before refilling AdBlue on page 231.

Press the left side of the flap to close it (you

should hear it click into place).

in

►

After refilling

►

Turn the hose anti-clockwise to remove it.

►

Remove the canister and screw the tank cap

back on ðpage 232, After refilling AdBlue.

The vehicle must be driven so that the system

can detect the AdBlue which has been added.

This process can take several minutes.

CAUTION

►

If the AdBlue tank had run dry and a range of

Use only refill canisters of the correct type ap-

proved for your vehicle. AdBlue may leak out

if you use another system.

0 km was shown on the display, switch on the

ignition for approx. 30 seconds before starting

the engine.

AdBlue can freeze at very low temperatures. Re-

strictions may therefore be encountered when re-

filling. In this case, the system may not detect

AdBlue when you refill and will continue to indi-

cate a low AdBlue level. The message will disap-

pear as soon as the tank has thawed.

Refilling AdBlue from a bottle

Refill bottles are available from qualified work-

shops. Approved refill bottles contain about 1.9

litres of AdBlue.

►

Take the cap off the refill bottle ð

refilling AdBlue on page 231, ð

filling AdBlue on page 231.

in Before

in Before re-

Emission control system

►

Screw the bottle clockwise onto the filler neck

as far as it will go.

To empty the bottle, lightly press the bottom of

the bottle. Keep pressing the bottom of the

bottle until the bottle is empty, or until no

more fluid runs into the tank.

Unscrew the bottle anti-clockwise without ap-

plying pressure.

Remove the bottle and screw the tank cap back

on ðpage 232, After refilling AdBlue.

Introduction

WARNING

The exhaust system is very hot when the vehi-

cle is being driven and after the engine has

been switched off.

►

– Never touch the tailpipes when they are hot

– risk of burns!

– Because of the high temperatures which can

occur in the exhaust system, do not park the

vehicle where the exhaust can come into

contact with flammable materials under the

car (e.g. on grass or at the forest edge) – risk

of fire!

CAUTION

Use only refill bottles of the correct type ap-

proved for your vehicle. AdBlue may leak out

if you use another system.

– Do not apply any underseal agents in the

area around the exhaust system – risk of

fire!

232

Checking and topping up fluids

The engine must be warmed up prior to the re-

generation trip.

Information on the catalytic converter

Please refer to the safety information

ðpage 232, Introduction.

►

Drive at a speed of at least 80 km/h ð

.

►

Then take your foot off the accelerator com-

pletely for a few seconds and let the vehicle

coast in gear.

The vehicle must only be used with unleaded pet-

rol, otherwise the catalytic converter will be ir-

reparably damaged.

►

Repeat this procedure (accelerate to at least

80 km/h and coast again) until the indicator

lamp goes out.

Never allow the fuel tank to run completely dry,

as the irregular supply of fuel can cause misfir-

ing. This allows unburnt fuel to enter the exhaust

system, which can cause overheating and dam-

age to the catalytic converter.

This procedure causes the particulate filter to re-

generate itself and may take some time.

If the indicator lamp does not disappear after a

while, drive to a qualified workshop and have the

fault rectified.

Information on the particulate filter

Please refer to the safety information

ðpage 232, Introduction.

Regenerating the particulate filter by driving

at a constant speed

Applies to: vehicles with diesel engine

The particulate filter can filter out almost all soot

particles contained in the exhaust gas. In normal

driving conditions the filter is self-cleaning.

Should the self-cleaning function of the filter not

be able to operate, e.g. if the vehicle is continu-

ously used only for short trips, the filter will be-

come obstructed with soot and a driver message

will appear. The particulate filter requires clean-

ing (regeneration).

Before starting the regeneration trip, check

whether regenerating the particulate filter by

driving at a constant speed is the correct meth-

od for your vehicle (based on the engine) ð

.

The engine must be warmed up prior to the re-

generation trip.

►

Drive at a speed of between 50 km/h and

120 km/h ð

temperature, the soot in the filter will be

burned off.

. As a result of the increase in

Driver messages about the particulate filter



Particulate filter: can be cleaned by driving

vehicle. You can continue driving. See owner's

manual

►

Do not stop the regeneration trip until the indi-

cator lamp goes out.

Or

This procedure causes the particulate filter to re-

generate itself and may take some time (approx.

30 minutes).



Particulate filter: can be cleaned by driving

vehicle. You can continue driving. See owner's

manual

If the indicator lamp does not go out, drive to a

qualified workshop and have the fault rectified.

Different regeneration procedures are required,

depending on the type of engine (petrol or die-

sel).

Information on the particulate filter

As a result of the high temperatures which occur

during the regeneration of the particulate filter,

the radiator fan may continue to run after the en-

gine is switched off, even if the engine has not

yet reached operating temperature.

Regenerating the particulate filter by driving

and coasting

Applies to: vehicles with petrol engine

Before starting the regeneration trip, check

whether regenerating the particulate filter by

driving and coasting is the correct method for

Noises, odours and increased engine speeds

when idling may be noticed during regeneration.



your vehicle (based on the engine) ð

.

233

Checking and topping up fluids

Applies to vehicles with diesel engine: If the indi-

cator lamp requesting you to refuel the vehicle

 also appears in the instrument cluster during

the regeneration trip, the particulate filter regen-

eration process may be interrupted. Drive to a

filling station and then resume the regeneration

trip after refuelling the vehicle.

Engine compartment

Safety information on the engine

compartment

Extra caution is necessary when working on

components in the engine compartment.

Always be aware of the danger of injury and

scalding as well as the risk of accident or fire

when working in the engine compartment (e.g.

when checking and refilling fluids). Always ob-

serve the warnings listed below and follow all

normal safety precautions. The engine compart-

ment of any motor vehicle is a potentially haz-

ardous area. ð

To maximise the service life of the particulate fil-

ter, always use suitable engine oil and the correct

fuel. You should also avoid driving the vehicle

continuously on short trips.

WARNING

When regenerating the particulate filter, it is

essential that you adjust your speed to suit

the weather, road, terrain and traffic condi-

tions – risk of accident! The recommendation

must never lead to the driver disregarding lo-

cal traffic regulations.

Explanation of warning symbols:

Sym- Description

bol

Observe all warnings – risk of injury!



CAUTION

Hot components!



Before starting the regeneration trip, check

which method (driving at a constant speed or

driving and coasting) is required for your vehi-

cle (based on the engine). If you do not use

the correct method, the regeneration trip may

have no effect and the particulate filter may

be damaged.

Rotating parts!

Hot surfaces. The heat generated during

operation can lead to hot surfaces on in-

dividual components. Do not touch com-

ponents – risk of burns!





Fan can switch on at any time!

.

High voltage! The voltage of these com-

ponents (such as the high-voltage sys-

tem or ignition system) is lethal! Touch-

Information on the emission control

system



ing damaged live high-voltage compo-

nents could cause you to be fatally elec-

trocuted.



If the indicator lamp

lights up or flashes, mal-

functions have occurred which are relevant for

emissions. These malfunctions may reduce the

quality of the exhaust gas and damage the cata-

lytic converter, for example. Drive slowly to a

qualified workshop without delay and have the

fault rectified.

High voltage! Switch off the engine be-

fore touching any part of ignition sys-

tem!



Hot coolant – risk of scalding!



The indicator lamp may also light up if the fuel

tank flap has not been closed properly

Always read the instructions in the Own-

er’s Manual.

1)

ðpage 227

.





1)

Depends on engine and country

234

Checking and topping up fluids

have the work carried out by a qualified

workshop.

WARNING

A vehicle’s engine compartment is a potential-

ly hazardous area and working there can lead

to serious injuries.

– Do not expose yourself to chemical substan-

ces for any longer than necessary. For exam-

ple, electrolytic fluids can irritate the skin.

– Always exercise extreme caution when work-

ing in the engine compartment. Always keep

to the generally accepted safety procedures

and use your common sense. Never put

yourself at risk of injury.

WARNING

The voltage of the high-voltage system is le-

thal! Touching damaged high-voltage compo-

nents could cause you to be fatally electrocu-

ted. A warning sticker is attached to the dif-

ferent parts of the high-voltage system. This

is intended to warn you of the high voltage.

– Do not perform any work in the engine com-

partment if you do not fully understand the

procedure or if you do not have suitable in-

formation, tools and equipment.

– If you are not sure how to proceed, have the

work performed by a qualified workshop.

Work which is not performed properly can

cause serious injuries.

CAUTION

When topping up fluids make sure the correct

fluid is put into the correct filler opening.

Failure to do so will cause serious malfunc-

tions or damage.

WARNING

Note the following information when working

in the engine compartment:

For the sake of the environment

Inspect the ground underneath your vehicle

regularly so that any leaks are detected at an

early stage. If you find spots of oil or other

fluids, have your vehicle inspected by a quali-

fied workshop.

– Switch the vehicle off.

– Apply the parking brake.

– Keep children away from the engine com-

partment.

– Never spill fluids in the engine compart-

ment.

– Take care not to cause short circuits in the

electrical system. Close the positive battery

terminal cover, for example, immediately af-

ter use.

– To avoid the risk of being scalded, never

open the bonnet if you see steam or coolant

escaping from the engine compartment.

Wait until no steam or coolant can be seen

before opening the bonnet.

– The cap on the coolant expansion tank must

not be opened if the coolant is hot. The cool-

ing system is under pressure.

– Protect your face, hands and arms by cover-

ing the cap with a large, thick cloth to pro-

tect against escaping coolant and steam.

– Any work on the batteries and electrical sys-

tem in your vehicle entails a risk of injury

and chemical burns in addition to danger of

accident or fire. For this reason, you must

235

Checking and topping up fluids

1)

►

With the door open, pull the lever  under

Opening/closing the bonnet

the dashboard in the direction indicated by the

arrow ðFig. 124.

►

Lift the bonnet slightly ð

.

Press the release lever ðFig. 125 in the direc-

tion indicated by the arrow. This will release the

arrester hooks.

►

Open the bonnet.

Closing the bonnet

►

To close the bonnet, pull it down to overcome

Fig. 124 Footwell: Release lever

the spring pressure.

►

Then let it drop into the catches; do not press

down. ð

WARNING

– To avoid the risk of being scalded, never

open the bonnet if you see steam or coolant

escaping from the engine compartment.

Wait until no steam or coolant can be seen

before opening the bonnet.

– For safety reasons the bonnet must always

be completely closed when the vehicle is

moving. After closing it always check that it

is properly secured. It should not be possible

to lift the front edges of the bonnet.

– Should you notice that the bonnet is not

safely secured when the vehicle is moving,

stop the vehicle immediately and close the

bonnet properly, otherwise it could cause an

accident.

Fig. 125 Unlocked bonnet: Lever

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.

The wiper arms should be resting on the wind-

screen: make sure they are not in a raised posi-

tion. Otherwise the paint may get damaged.

Opening the bonnet

The bonnet is released from inside the vehicle.

1)

Symbol  not available in all countries.

236

Checking and topping up fluids

Engine compartment layout

Fig. 126 Engine compartment layout

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.

8

Coolant expansion tank for combustion en-

gine () ðpage 241

The positions of the brake fluid reservoir and the

engine oil filler cap may be different on some en-

gine and country versions.

Main components for checking and refilling

1

Windscreen washer container ()

ðpage 248

Engine oil

2

Jump-start terminal: (+) under a cover

ðpage 247, Charging the 12-volt vehicle

battery, ðpage 271, Jump-starting

Information on engine oil

3

Jump-start terminal: (–) with hexagon head

ðpage 247, Charging the 12-volt vehicle

battery, ðpage 271, Jump-starting

4

5

6

7

Sticker for engine oil specification

ðpage 237

Engine oil filler cap () ðpage 239, Check-

ing the engine oil level

Brake fluid reservoir () under a cover

ðpage 243

Fig. 127 Engine oil sticker

Coolant expansion tank for electrical compo-

nents () ðpage 241

–

1 Engine oil standard

2 Engine oil viscosity



237

Checking and topping up fluids

If you have to top up the engine oil, use one of

the oils that meet the engine oil standard speci-

fied on the sticker ðFig. 127. The sticker with

the specified standard is located at the front of

the engine compartment ðpage 237, Fig. 126. If

you use this oil, you can top up the engine oil lev-

el as often as necessary.

– If the engine oil level is too low, add more oil

ðpage 239. Do not drive on until the warning

lamp has gone out.

– If the engine oil level is OK but the warning

lamp still lights up, switch off the engine and

do not drive on. Seek professional assistance.



Please add oil immediately

If the specified engine oil is not available, you can

add a maximum of 0.5 litres of oil corresponding

to the following standards once between oil

changes. You should do this in emergencies only.

Switch off the engine and do not drive on. Check

the oil level ðpage 239 and top it up immediate-

ly ðpage 239.



Please add max. x ltr. oil. You can continue

– Applies to petrol engines: Standards:

VW 504 00, ACEA C3, ACEA C4, API SP or ILSAC

GF-6A. All viscosity classes of these standards

are allowed.

driving

Add the amount of oil shown soon ðpage 239.



Please reduce oil level

– Applies to diesel engines: Standards:

VW 507 00, ACEA C3, ACEA C4 or API CK-4. All

viscosity classes of these standards are al-

lowed.

The engine contains too much oil – risk of dam-

age to the catalytic converter and engine. Drive

to a qualified workshop without delay to have the

engine oil level adjusted if necessary. Avoid high

engine speeds, full acceleration and heavy engine

loads.

Audi recommends having the oil changed by a

qualified workshop.

Audi recommends engine oil from Audi Genuine

Parts.



Oil level sensor system: fault. Please contact

workshop

The sensor for checking the engine oil level has

failed. Drive to a qualified workshop soon and

have the fault rectified.

CAUTION

Audi recommends that you use the types of

engine oil that have been formulated to con-

form to the corresponding VW standard. Us-

ing engine oil that does not meet these quali-

ty requirements may cause damage to the en-

gine. In an emergency, 0.5 ltr. of engine oil

corresponding to the standards specified

above may be used as an exception.



Oil system: fault. Please contact workshop

The sensor for checking the engine oil pressure or

the bonnet lock has failed. Drive to a qualified

workshop soon and have the fault rectified.



Please warm up engine

It is possible for fuel to enter the engine oil, es-

pecially at low outside temperatures. The tem-

perature of the engine oil needs to be high

enough so that the fuel in it can evaporate.

Driver messages about the engine oil

system

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:

Drive in transmission position S.

Run the engine at high rpm speeds but avoid us-

ing full throttle.



Switch off engine. Oil pressure too low

Switch off the engine and do not drive on. Check

the engine oil level ðpage 239.

You should drive for at least 30 minutes; however

it is possible that the indicator lamp may not go

out during this period. Repeat the procedure at

your convenience.



238

Checking and topping up fluids

If the indicator lamp does not disappear after

several runs, drive to a qualified workshop and

have the fault rectified.

– Park the vehicle on a level surface.

– Switch off the warm engine.

– Switch on the ignition again without starting

the engine.

WARNING

– Wait for about 5 minutes for the engine oil to

drain back out of the engine into the sump.

– You can call up the engine oil level via the Car

menu ðpage 26.

When responding to the message  Please

warm up engine, it is essential that you ad-

just your speed to suit the weather, road, ter-

rain and traffic conditions – risk of accident!

The recommendation must never lead to the

driver disregarding local traffic regulations.

– Read off the oil level on the display.

Information on the oil level display

The oil level shown on the centre display (MMI) is

intended solely for information purposes. An oil

Checking the engine oil level



level warning

/

will appear in the instru-

ment cluster if the oil level is too low. Add more

oil ðpage 239, Topping up the engine oil.

Information on engine oil consumption

Depending on how you drive and the conditions

in which the car is used, oil consumption can be

up to 0.5 ltr./1000 km. Oil consumption is likely

to be higher for the first 5,000 km. The engine

oil level must be checked at regular intervals,

preferably when refuelling and before a journey.

Fig. 128 Centre display: Checking engine oil level

Areas of the oil level display ðFig. 128. Please

refer to ð

.

CAUTION

1

2

3

If the display is in this area, the engine oil

level is correct.

There is a risk of engine damage if the engine

oil level is too low or too high.

If the display is in this area, you could top up

the engine oil.

Topping up the engine oil

If the display is in this area, you must top up

the engine oil.

The engine oil level should be inside the top per-

missible area when the vehicle is subject to par-

ticularly high loads, such as during long motor-

way trips in the summer or when driving over

mountain passes.

Checking the engine oil level in the MMI

You can check the engine oil level on the MMI.

Fig. 129 Engine compartment: Engine oil filler cap

– You can call up the engine oil level via the Car

menu ðpage 26.

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.

If the oil level is not shown, carry out the follow-

ing steps:

►

Switch off the engine.

Open the bonnet ðpage 236.

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.

►



239

Checking and topping up fluids

►

Unscrew the cap  from the oil filler opening

ðFig. 129.

Carefully add 0.5 litres of suitable engine oil

The cooling system is filled at the factory with a

mixture of conditioned water and coolant addi-

tive. This coolant must not be changed.

►

ðpage 237.

Screw the filler cap back on.

Close the bonnet ðpage 236.

Switch the ignition on again after two minutes

The coolant level is monitored by a warning lamp

►



. However, it is advisable to check it occasion-

►

ally.

►

and read off the current oil level on the MMI

Coolant additive

ðpage 239, Checking the engine oil level.

Applies when using engine oil that corresponds

to the specified standard: Add a little more en-

gine oil if necessary.

The coolant additive contains anti-freeze and cor-

rosion protection agent. When topping up, use

only the type of coolant additive specified below,

in combination with distilled water.

►

Coolant additive

G12evo

Specification

TL 774 L

WARNING

– Ensure that no oil comes into contact with

hot engine components when topping up:

this could cause a fire.

The amount of coolant additive which needs to

be mixed with the water depends on the temper-

atures to be expected in the winter season. If the

anti-freeze concentration is too low, the coolant

can freeze and cause engine damage.

– The oil filler cap must be properly closed to

prevent oil from squirting onto the hot en-

gine or exhaust system while the engine is

running – risk of fire!

Climate region Coolant

additive

Frost protec-

tion

– Wash your skin thoroughly if it comes into

contact with engine oil.

– Engine oil is poisonous and must be kept out

of the reach of children.

Hot regions

min. 40 %

max. 45 %

min. -25 °C

(-13 °F)

– Store the engine oil safely in the original

container.

Cold regions

min. 50 %

max. 55 %

max. -40 °C

(-40 °F)

CAUTION

No additives should be used with engine oil.

These could cause engine damage.

– Have your qualified workshop check the

cooling system before the winter season to

make sure that the anti-freeze concentra-

tion is adequate for the conditions to be ex-

pected. This applies particularly if you drive

into a colder climate zone.

For the sake of the environment

– Never pour oil down drains or into the

ground.

– Always observe local regulations when dis-

posing of empty oil canisters.

– Adjustments to the amount of coolant addi-

tive to suit colder temperatures must al-

ways be carried out by a qualified workshop;

otherwise there is a risk of engine damage.

The vehicle has several coolant circuits that

can only be filled by a qualified workshop

that has the necessary special tools.

Cooling system

Information on coolant

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.

– To prevent damage to the engine, do not

use a different type of coolant additive if

G12evo is not available. In this case use only

clean, ideally distilled water and have the

coolant concentration brought back up to



240

Checking and topping up fluids

the correct level as soon as possible with

the specified additive.

There is a fault in the cooling system. Do not

drive on. Check the coolant level ðpage 241,

Checking the coolant level. If the indicator lamp

disappears after the coolant level has been

checked and coolant has been added if necessary,

you can continue driving. Do not drive on if the

indicator lamp does not disappear. Seek profes-

sional assistance.

– Always top up with fresh, unused coolant.

– Radiator sealants must not be added to the

coolant.

– The cooling system must be refilled by a

qualified workshop only – risk of engine

damage! You can obtain important informa-

tion about recommended anti-freeze addi-

tives from your qualified workshop.

Checking the coolant level

CAUTION

– Auxiliary headlights and other attachments

in front of the cooling air inlet reduce the

cooling effect of the coolant. At high out-

side temperatures and high engine loads,

there is a risk of the engine overheating.

– The front spoiler also ensures proper distri-

bution of the cooling air when the vehicle is

moving. If the spoiler is damaged this can

reduce the cooling effect, which could cause

the engine to overheat. Seek professional

assistance.

Driver messages about the cooling system

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:

 Coolant temperature: too high! Please

Fig. 130 Engine compartment: Coolant expansion tank for

combustion engine.

inside coolant tank (visible when cap is opened – risk of

scalding!)

A

marks on expansion tank,

B

marks

switch off engine

Switch off the engine and do not drive on. Wait

approx. 15 minutes and then restart the engine.

Do not drive on if the indicator lamp does not dis-

appear. Seek professional assistance.

 Coolant temperature: high. Please adapt

driving style

You can continue driving. The air conditioner out-

put will be restricted. The performance may be

restricted. Continue driving in a moderate style

or allow the engine to idle until the indicator

lamp disappears. If the indicator lamp still does

not disappear, do not drive on. Seek professional

assistance.

Fig. 131 Engine compartment: Coolant expansion tank for

electrical components.

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.



Cooling system: fault. Please contact work-



shop

241

Checking and topping up fluids

►

Your vehicle may have two separate coolant ex-

pansion tanks depending on its equipment

ðpage 237, Fig. 126. One expansion tank is for

the combustion engine (black cap) ðFig. 130

and the other one is for the electrical compo-

nents (blue cap) ðFig. 131. Please refer to the

Read the coolant level on the inside of the ex-

pansion tank B ðFig. 130.

If you did not need to top up the coolant, screw

the black cap on clockwise until you feel the

second point of resistance.

Please read the information on ðpage 240,

Cooling system before topping up the coolant

in the coolant expansion tank.

►

safety information ð

.

Preparations before checking the coolant

level

Topping up the coolant

►

Park the vehicle on a level surface.

Switch the vehicle off. (The ignition must re-

Important: A visible amount of coolant must re-

►

main in the coolant expansion tank ð

.

main switched off throughout the process of

checking and topping up the coolant.)

Open the bonnet ðpage 236.

If you do need to top up the coolant, use a mix-

ture of distilled water and the specified coolant

additive. Only use non-distilled water in an emer-

gency. Always use clean water.

►

Applies to 4-cylinder petrol engine: Wait for at

least 15 minutes after switching off the engine;

otherwise the coolant level reading may be in-

correct.

Applies to vehicles with cooling of electrical com-

ponents: The caps for the two coolant expansion

►

When the coolant is cold, the coolant level for

tanks must not be swapped over ð

.

each coolant expansion tank should be between

marks 1 and 2 ðFig. 130 or ðFig. 131. The

coolant level may initially be slightly above the

top mark 1 on new vehicles. This may also be

the case if the engine is warm.

Coolant circuit for combustion engine: black cap

ðFig. 130

Applies to vehicles with cooling of electrical com-

ponents: Coolant circuit for electrical compo-

nents: blue cap ðFig. 131

►

You can read the coolant level using the outer

or inner markings on the coolant expansion

tank.

►

Wait for the engine to cool down.

Cover the cap on the expansion tank you intend

►

to open with a large, thick cloth.

Carefully unscrew the cap for the affected cool-

Checking the coolant level based on marks

on the outside

►

ant circuit ðFig. 130 A or ðFig. 131 by turn-

►

Read the coolant level on the outside of the ex-

pansion tank A ðFig. 130 or ðFig. 131.

Please read the information on ðpage 240,

Cooling system before topping up the coolant

ing it anti-clockwise ð

.

►

Add coolant in the correct concentration

ðpage 240 up to mark 1 .

You should make sure that the fluid level re-

mains stable. If necessary, add more coolant.

Screw the cap on clockwise until you feel the

second point of resistance.

►

in the coolant expansion tank.

Checking the coolant level based on marks

on the inside

Applies to: coolant expansion tank for combustion engine

WARNING

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.

– The engine compartment of any motor vehi-

cle is a potentially hazardous area. Before

carrying out any work in the engine com-

partment, switch off the vehicle and allow

the cooling system to cool down. Please ob-

serve the important safety warnings

ðpage 234, Safety information on the en-

gine compartment.

►

Wait for the engine to cool down.

►

Cover the cap on the expansion tank with a

large, thick cloth.

►

Carefully unscrew the black cap for the affected

coolant circuit A ðFig. 130 by turning it anti-



clockwise ð

.

242

Checking and topping up fluids

bustion engine ðFig. 130, blue cap for elec-

trical components ðFig. 131.

– Never open the bonnet if you can see or hear

steam or coolant escaping from the engine

compartment; there is a risk of being scal-

ded. The cooling system is under pressure.

Wait until you can no longer see or hear es-

caping steam or coolant.

Brake fluid

Checking the brake fluid

– When working in the engine compartment

be aware that the radiator fan may start

running suddenly, even if the ignition is

switched off – risk of injury!

– The coolant and coolant additives can be a

health hazard. Store the coolant additive in

the original container in a safe place out of

reach of children – risk of poisoning.

CAUTION

Fig. 132 Engine compartment: Cap of brake fluid reservoir

Coolant loss which leads to the coolant ex-

pansion tank being empty normally indicates

significant leaks in the cooling system which

could result in further damage. In this case,

do NOT drive on. Seek professional assistance.

– Do not add coolant if the expansion tank is

empty. Air could have got into the cooling

system – risk of damage! In this case, do

NOT drive on. Seek professional assistance.

– If there is a visible amount of coolant re-

maining in the tank, add more coolant.

Fig. 133 Engine compartment: Removing cover for brake

fluid reservoir

Drive to a qualified workshop without delay

and have the fault rectified. If the warning/

Please refer to the safety information

ðpage 234, Safety information on the engine

compartment.



indicator lamp  /

comes on again,

stop the vehicle and switch off the ignition.

Seek professional assistance.

Checking the brake fluid level

– If too much coolant has been added to the

coolant expansion tank, drive to a qualified

workshop soon and have the coolant level

corrected.

The brake fluid reservoir is located underneath a

cover in the engine compartment on the driver's

side.

– If you use non-distilled water, the chemicals

that it contains can cause serious corrosion

damage to the engine – risk of engine dam-

age!

►

Park the vehicle on a level surface.

Open the bonnet ðpage 236.

Remove the cover below the windscreen on the

driver’s side. To do so, lift the cover slightly at

the front 1 and detach it 2 ðFig. 133.

Read off the brake fluid level on the brake fluid

reservoir ðpage 237. The brake fluid level

must be between the MIN and MAX marks

►

– If you have used a large quantity of non-dis-

tilled water (more than 0.5 ltr.) in an emer-

gency, drive directly to a qualified workshop

and have the coolant changed.

►

– Applies to vehicles with cooling of electrical

components: The caps for the two coolant

expansion tanks must not be swapped over

– risk of engine damage! Black cap for com-

ð

.

►

Fit the cover securely again below the wind-

screen. To do so, press the cover down at the



243

Checking and topping up fluids

front and rear longitudinal edges until all tabs

engage.

Driver messages about the brake system

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:

The brake fluid level is also automatically moni-

tored.

Having the brake fluid changed

 Brakes: stop vehicle and check brake fluid

level

The brake fluid is changed at regular intervals.

Have the brake fluid changed by a qualified work-

shop. The qualified workshop will inform you of

these intervals.

Stop the vehicle and check the brake fluid level.

Seek professional assistance.

WARNING

If the brake fluid level is under the MIN mark,

the effectiveness of the brakes and therefore

the safety of the vehicle may be impaired –

risk of accident! Do not drive on. Seek profes-

sional assistance.

– Please refer to the safety information ð

in Driver messages about the brake system

on page 244.

– Heavy use of the brakes may cause a vapour

lock if old brake fluid is left in the system.

This would seriously impair the effective-

ness of the brakes and the safety of the car –

risk of accident!

CAUTION

If the brake fluid level is above the MAX mark,

brake fluid may escape via the cap on the res-

ervoir in certain circumstances and cause

damage to the vehicle.

– The brake fluid in your vehicle must comply

with the VW 501 14 standard. If this brake

fluid is not available, it is permissible to use

an alternative high-quality brake fluid com-

plying with the U.S. Federal Motor Vehicle

Standard (FMVSS) 116 DOT 4, Class 6

(ISO 4925).

Electrical system

Driver messages about the electrical

system

– If used brake fluid or brake fluid not ap-

proved for your vehicle is used, the effective-

ness of the brakes will be seriously impaired

and the brake system could even fail com-

pletely – risk of accident! The vehicle manu-

facturer will accept no liability for faults or

damage which occur as a result. In addition,

no warranty claims will be accepted.

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:



If the warning lamp

/

lights up, there is a

power supply or battery fault or a fault in the ve-

hicle's electrical system.



Electrical system: fault. Safely stop vehicle

CAUTION

The steering wheel may also vibrate when the

driver message appears. Stop the vehicle safely

and do not continue driving. You should also

switch off the vehicle ð . Seek professional as-

sistance.

– Please refer to the safety information ð

in Driver messages about the brake system

on page 244.

– Brake fluid must not be allowed to come in-

to contact with the vehicle's body, other-

wise it will attack the paintwork.



Electrical system: fault. No restart possible.

Please contact workshop



244

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}

ð

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.

ð

.

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,

ð

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.

–

is



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

WARNING

If you neglect to have the vehicle serviced

promptly at the specified intervals, or if the

scope of the servicing work is insufficient, this

can lead to a breakdown in road traffic result-

ing in a potential accident with serious injury.

CAUTION

– Regular servicing of the vehicle not only

sustains its service life and preserves its val-

ue, but also helps to maintain operational

and road safety. Service work should there-

fore always be carried out according to the

Audi guidelines.

– Services must always be carried out prompt-

ly, even if the mileage is low.

– Audi is not responsible for damage to the

vehicle resulting from insufficient servicing

or a lack of availability of parts.

Using the service interval display

You can check the distance and time remaining

until the next oil change and next inspection in

the Car menu ðpage 26.

You cannot check the service interval on a new ve-

hicle until it has been driven for 500 km.

Applies to: vehicles with flexible oil change service

Qualified workshops reset the service interval af-

ter the oil is changed. Your own personal driving

profile is used to calculate the remaining dis-

tance. Frequent cold starts or short trips place

extra demands on the engine oil with the result

that the oil has to be changed more often.

249

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

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