2020 AUDI A8 engine coolant

Table of contents

About this Owner's Manual......
SUMIMALY: ; « ss6% : osen ss sean cs poe s
QC CCeS Skis: si esis a 6 ores os ewe
Cockpit... 2... ee eee eee eee
Indicator lights overview...........0.
Display and operation............
Instrument cluster...............
Instrument cluster overview...........
Loading a personal profile.............
Operating. ........ 20.00. cece eee eee
Adjusting the display.................
Coolant temperature display...........
Tachometer............. eee eee eee
POWErIMEEEr ss 5 2 sags & e eaters # eee < ae
Odometer wack «sce o sesvens we oon wo ereeees
Outside temperature display...........
Engine oil temperature indicator.......
Boost indicator’. wis as caren se owen oo ocers
Vehicle functions ..............000 00
TOUCHHAISPLAYS). w:suis 6 6 sere sx eee oo
General touch display operation........
Multi Media Interface................
Rear Seat Remote « wiws s essa ss nena ss
Rear Seat Entertainment (Audi tablet) . . .
Head-up display..................
DESCRIPTION. 6 & wisn ox saosin + & asexiue 6 v sirosius
Voice recognition system........
General information.................
Operating...............0..0..0000-
External voice operation..............
Global functions.................
Additional function buttons...........
Starting and driving.............
Personalization..................
Opening and closing.............
Cenittal locking #acx <= zene es ese s eran:
NOD
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13
18
18
20
25
29 37 37 38 38 38 39
40 40
4l 41 Al
Power windOwS sevice vs seca ¥ & aenios 6 v aware 54
Panoramic glass roof.............0005 55
Valet parking’: s ¢ sewn s 2 seus « eee gc oe 56
Garage door opener...........--.00-- 5H
Lights and Vision................. 60
Exterior lighting « ssscs< <2 coos 2 eeeme + aes 60
Tmterior UQhting)ecoo 6. secre» «scones 6 + euniece 64
VISION... ke eee eee 66
Windshield wipers................... 68
Digital compass............... 000 eee 70
Sitting correctly and safely...... 72
Correct passenger seating position...... 72
Front seatS 1.2... . 0. e eee eee ee eee 72
REAP SEAUS sass = = seeps © ¢ syns F = sees 7 oe 76
Steering wheel wie. <6 ese oy eee ee eee 80
Head restraints ..........0.-..0000005 81
Safety belts’: « sees + ¢ weve ss wae oe eee 82
Memory function's 5 sce << seas sv evan sx 85
Airbag system... 22... ee eee eee eee 86
Child safety seats.............2..000. 91
Stowing and using............... 97.
Power SOUrCeS ... 2... ee eee eee eee 97
Cup holders’: « ssa s ¢ sews s 5 eeies & 2 wees 98
Storage and compartments............ 98
Luggage compartment............... 100
ROOTTSCK:
« = cwwea « ¢ mee 4 2 awa ts ewe ea 102
Warm and cold................... 104
Climate control system.........-.0005 104
Steering wheel heating............... 108
Auxiliary climate control.............. 108
Fluids in the A/C system.............. 109
Driving................. 0.00.00. 00. Ltt
Starting the vehicle................0- 11
When drivingjen <2 neve se eree ve sen eos 112
Drive system... 0... eee ee eee ee 118
Start/Stop system...........--00000- 121
Brakes, « s wees + pase ss pose ss meee ss TET 123
Electromechanical parking brake....... 124
Special driving situations.............. 126
Driving dynamic.................. 128
Audi drive select...............00000. 128
SUSPENSION e « « sues g « omen 3 e eee a ¥ es 129

Instrument cluster

Instrument cluster
cH) Olas
aE


Fig. 2 Instrument cluster overview (Audi virtual cockpit)
Depending on the vehicle equipment, the follow-
ing items may appear in the instrument cluster:
@) Display
— Engine coolant temperature ~E .. 14
— High-voltage battery charge level
Left
dial

—Tachometer ........ 000s eee 14
POWER MCLE cose so cece oo cesuene ¥ & 15
Tab ated « < neues « + sees 2 eas be 13
Central area ..............02.0. 13
Status line (one or two lines)
Right dial
— Convenience display
Fuellevel IY ...... 2... eee eee 272
Right additional display with speed-
ometer
Left additional display with:


—Gear ...... 0... eee eee 113
— Audi drive select mode ......... 128
Z\ WARNING
If there is a severe malfunction in the instru
ment cluster, the display may turn off. The
indicator
light may also turn on. Stop the ve-
hicle safely. See an authorized Audi dealer or
authorized Audi Service Facility for assistance.

12

@ Tips
— You can select the units used for tempera-
ture, speed, and other measurements in the
Infotainment system > page 266.
— Speeds are displayed in mph (miles per
hour) or km/h (kilometers per hour).
— If there is a malfunction in the instrument
cluster, DEF will appear in the trip odometer
display. Have the malfunction corrected as
soon as possible.
— Certain instrument cluster content can also
be displayed in the head-up display*
=> page 37.
— Certain settings are stored automatically in
the active personal profile.
Loading a personal
profile
Nel Ceto dna}
me Gasca ard
(1 re ests)
e-: - Switch profile
Fig. 3 Instrument cluster: loading a personal profile

Instrument cluster

Switching the view
>» Press the VIEW button to switch between the
default view @ and the enhanced view (2).
Adjusting the layout
Depending on the vehicle equipment, various lay-
outs may be available.
» Applies to: MMI: Select on the home screen:
SETTINGS > Display & brightness > Virtual
cockpit.
> To adjust the desired layout, press @).
Adjusting the additional display
Depending on the vehicle equipment, the addi-
tional displays that can be selected may vary.
» Applies to: MMI: Select on the home screen:
SETTINGS > Display & brightness > Virtual
cockpit > (Configure).
> Select the desired additional display.
Reducing the display
Depending on the vehicle equipment, you can
hide the central area in the instrument cluster.
> Select in the instrument cluster: Vehicle func-
tions tab > EE] button > Reduced display.
Coolant temperature
display
Applies to: vehicles with coolant temperature display
The coolant temperature display @) > page 12
only functions when the ignition is switched on.
To reduce the risk of engine damage, please ob-
serve the following notes about the temperature
ranges.
Cold range
If only the LEDs at the bottom of the gauge turn
on, the engine has not reached operating tem-
perature yet. Avoid high engine speeds, full accel-
eration, and heavy engine loads.
Normal range
The engine has reached its operating tempera-
ture once the LEDs up to the center of the gauge
turn on. If the || indicator light in the instru-
14
ment cluster display turns on, the coolant tem-
perature is too high > page 281.
() Note
— Auxiliary headlights and other accessories in
front of the air intake impair the cooling ef-
fect of the coolant. This increases the risk of
the engine overheating during high outside
temperatures and heavy engine load.
— The front spoiler also helps to distribute
cooling air correctly while driving. If the
spoiler is damaged, the cooling effect will
be impaired and the risk of the engine over-
heating will increase. See an authorized
Audi dealer or authorized Audi Service Fa-
cility for assistance.
Tachometer
The tachometer 2) > page 12 displays the engine
speed in revolutions per minute (RPM). The be-
ginning of the red zone in the tachometer indi-
cates the maximum permissible engine speed for
all gears once the engine has been broken in. Be-
fore reaching the red zone, you should shift into
the next higher gear, select the "D" or "S" selec-
tor lever position, or remove your foot from the
accelerator pedal.
Displaying the tachometer
Applies to: vehicles with plug-in hybrid drive
> Applies to: MMI: Select on the home screen:
SETTINGS > Display & brightness > Virtual
cockpit > Left dial > Tachometer or Combined.
Engine speed limitation
If the AI indicator light turns on, the engine will
be automatically limited to the RPM displayed in
the instrument cluster. This will protect the en-
gine components, for example during a cold start
or from overheating.
The engine speed limitation will be deactivated
once the engine has reached its normal operating
temperature and you have released the accelera-
tor pedal.
If the engine speed limitation was activated by
an engine control malfunction, the By indicator
light also turns on. Make sure the engine speed >

4N0012721BD
Trailer towing

Trailer towing
Driving with a trailer
General information
Your vehicle is primarily intended for transport-
ing people and luggage. However, if you drive
with a trailer, follow the technical requirements,
the operation and driving tips, and the legal reg-
ulations.
Driving with a trailer affects the vehicle's energy
usage, performance, and wear. It also requires
higher concentration from the driver.

Z\ WARNING
Do not transport any people in a trailer due to
the risk of fatal injury.
Technical requirements
Trailer hitch

Only use a trailer hitch with a removable ball
hitch mount and ball hitch. The trailer hitch must
be permitted for the vehicle, the trailer and the
permitted total weight of the trailer being
pulled. Above all, it must be securely and safely
attached to the vehicle trailer.
Never mount a trailer hitch on the bumper. The
trailer hitch must be mounted in a way that does
not impair the function of the bumper. Do not
make any changes to the exhaust system and the
brake system.
Check regularly if the trailer hitch is securely
mounted. Always follow the instructions given by
the trailer hitch manufacturer.
Trailer brakes
If the trailer has its own brake system, then fol-
low the manufacturer specifications. However,
the brake system on the trailer must never be
connected to the vehicle brake system.
Engine cooling system
Driving with a trailer means a higher load on the
engine and the cooling system. The cooling sys-
tem must be designed for additional load and
contain enough coolant > @.
CG) Note
Longer inclines cannot be driven without a
suitable cooling system, especially if the out-
side temperatures are high. Otherwise, this
increases the risk of engine damage.
Operating instructions
Towing capacity
Your vehicle can only be operated with class 1 or
class 2 trailers.
Load distribution
Poor cargo load and distribution can negatively
impact vehicle handling. Load the trailer based
on the following criteria as much as possible:
— Store objects in the vehicle luggage compart-
ment, if possible. The vehicle should always
carry the heaviest possible load and the trailer
should have the lightest possible load.
— Distribute the load in the trailer so that the
heavy objects are as close to the axle as possi-
ble.
— Secure objects so that they do not slide.
— Utilize the maximum permitted tongue weight
if possible.
Tires
Set the tire pressure on your vehicle for a “full
load”; see the tire pressure sticker > page 299. If
necessary, also adjust the tire pressure on the
trailer according to the manufacturer's specifica-
tions.
The trailer and the vehicle should be equipped
with winter tires when driving in winter tempera-
tures.
Outside mirrors
If you cannot see the traffic behind the trailer
with the standard exterior mirrors, then you
must attach additional exterior mirrors. Adjust
them so you have a sufficient visibility behind
you.
Exterior lighting
Follow the legal regulations for lighting on your
trailer that are applicable in the country where
151
>

4N0012721BD
Trailer towing

Hill
When you start driving uphill or downhill, trailers
may tilt or sway sooner than when driving ona
level surface. If small swaying movements have
already occurred, you can stabilize the trailer by
firmly braking immediately. Never attempt to
“straighten out” the trailer by accelerating.
Conventional drive system: Downshift before
driving on hills to utilize the engine braking ef-
fect SA.
Plug-in hybrid drive: reduce the speed and use
the
recuperation braking effect > page 118 to re-
lieve the brakes > A\.
Brakes
When using a trailer with overrun brakes, first
brake gently then quickly. This reduces the risk of
jerking while braking if the trailer wheels lock up.
Engine coolant temperature
Pay attention specifically to the coolant tempera-
ture display when there are high outside temper-
atures, and when driving on long inclines
=> page 14. Shift to a higher gear in a timely man-
ner.

ZA\ WARNING
Constant braking causes the brakes to over-
heat and can substantially reduce braking per-
formance, increase braking distance, or cause
complete failure of the brake system.

153

4N0012721BD
Checking and Filling

safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area in the vehicle. > A.


ZA WARNING
— Turn the engine off.
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Allow the engine to cool.
— Keep children away from the engine com-
partment.
— Never spill fluids on a hot engine. These flu-
ids (such as the freeze protection contained
in the coolant) can catch fire.
— Avoid short circuits in the electrical system.
— Never reach into the radiator fan. The fan is
temperature-controlled and can turn on
suddenly, even when the ignition is switched
off.
— Never open the hood when there is steam or
coolant escaping from the engine compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
— Plug-in hybrid drive: the coolant expansion
tank cap is equipped with a seal that must
never be removed under any circumstances
= page 277, fig. 183. If the coolant expan-
sion tank for the high-voltage system is not
sealed, please contact an authorized Audi
dealer or authorized Audi Service Facility.
— Plug-in hybrid drive: the sealed cap must on-
ly be opened by an authorized Audi dealer or
authorized Audi Service Facility.
— The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure. There
is a risk of burns
— To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
— Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
— Due to the risk of electric shock, never touch
the ignition cable or other components in

the electronic high-voltage ignition system
when the engine is running or is starting.
— Ifa gear is engaged while the vehicle is sta-
tionary and the engine is running, do not
press the accelerator pedal inadvertently.
Pressing the accelerator pedal will cause the
vehicle to move, and this could result in an
accident.
— If inspections or repairs must be performed
while the engine is running, moving compo-
nents (such as the ribbed belt, generator,
and radiator fan) pose an additional risk.
— Set the parking brake first and select the
“P” (Park) selector lever position.
— Always make sure that no parts of the
body, jewelry, ties, loose clothing, and
long hair can be caught in moving engine
components. Before any work, always re-
move any jewelry and/or ties, tie back long
hair, and make sure all clothing fits close
to the body to reduce the risk of anything
becoming caught in engine components.
— Pay attention to the following warnings list-
ed when work on the fuel system or on the
electrical equipment is required.
— Do not smoke.
— Never work near open flames.
— Always have a working fire extinguisher
nearby.
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Limit your exposure to exhaust and chemi-
cals to as short a time as possible.


ZA\ WARNING
California Proposition 65 Warning:
— Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects and
reproductive harm. In addition, certain flu-
ids contained in vehicles and certain prod-
ucts of component wear contain or emit

275

Checking and Filling


chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
o Note
When filling fluids, be sure not to add any flu-
ids to the wrong reservoirs. Otherwise severe
malfunctions and engine damage will occur.


@ For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If
there are visible spots from oil or other fluids,
bring your vehicle to an authorized Audi deal-
er or authorized Audi Service Facility to be
checked.
Opening and closing the hood
The hood is released from inside the vehicle.


Fig. 181 Footwell: release lever (example)

RAZ-0016,

Fig. 182 Unlocked hood: lever
276

Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
> Applies to: vehicles with plug-in hybrid drive:
Switch the ignition off before releasing the
hood so that the gasoline engine does not start
automatically.
> With the door open, pull the lever > below
the instrument panel in the direction of the ar-
row > fig. 181.
» Raise the hood slightly > page 274.
> Press the lever > fig. 182 in the direction of the
arrow. This releases the hooks.
> Open the hood.
Closing the hood
> Push the hood down until you override the
force of the strut.
> Let the hood fall lightly into the latch. Do not
press it in. > /\.
Message
B Warning! Hood is not locked. Stop vehicle
and check the lock
The hood latch is not locked correctly. Stop im-
mediately and close the hood.

Z\ WARNING
— Never open the hood when there is steam or
coolant escaping from the engine compart-
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
— For safety reasons, the hood must always be
latched securely while driving. Because of
this, always check the hood after closing it
to make sure it is latched correctly. The hood
is latched if the front corners cannot be lift-
ed.
— If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because driving when the hood is
not latched increases the risk of an accident.

4N0012721BD
Checking and Filling
Engine compartment overview
The most important check points.




Fig. 183 Typical location of the reservoir and the engine oil filler opening (example)
Follow the safety precautions > page 274. G) Tips
@ Washer fluid reservoir (6) > page 287 Plug-in hybrid drive*: read the information re-
@ Jump start point (+) under a cover, (-) with garding the coolant expansion tank under
hex head screw > page 286, Charging the 12 => page 282 and the jump start under >@® in
Volt vehicle battery, > page 322, Jump start- Preparation on page 323.
ing
® Engine oil filler opening (387) 9 page 279 Engine oil
@ Brake fluid reservoir (O)
under a cover
© page 283
© Coolant expansion tank for combustion en- If you need to add engine oil, use an oil that is
gine (4) > page 282 listed on the sticker. The sticker is located at the
© Plug-in hybrid drive: coolant expansion tank front of the engine compartment > page 277,
for the high-voltage system ( page 282 fig. 183.
@ Sticker* for engine oil specifications
If the recommended engine oil is not available, in
=> page 277
an emergency you may add a maximum of 1
The engine oil filler opening may be located ina quart (1 liter) of ACEA C3 or API SN engine oil
different area depending on the specific engine. one time until the next oil change.
For more information on the correct engine oil
for your vehicle, contact an authorized Audi >
277