2021 AUDI Q8 engine coolant

Checking and Filling

Because correctly disposing of engine oil is diffi-
cult and special tools and technical knowledge
are needed for an oil change, Audi recommends
having your engine oil changed by an authorized
Audi dealer or authorized Audi Service Facility.
If you change the engine oil yourself, please note
the following important information:

ZA\ WARNING
If you change the engine oil on the vehicle
yourself, the following precautions must be
followed:
— Wear protective eyewear.
— Due to the risk of scalding, allow the engine
to cool down sufficiently.
— Maintain enough distance when you are re-
moving the oil drain plug. While doing this,
keep your forearm parallel to the ground to
reduce the risk of hot oil dripping down your
arm.
— Drain the oil into a container designed for
this purpose that is large enough to hold the
full amount of oil in your engine.
— Engine oil is poisonous. Always store out of
reach of children.
— Prolonged contact of used engine oil with
the skin may cause skin damage. Always
wash oil off immediately with soap and wa-
ter to protect your skin.

©) Note
Do not mix any additives with the engine oil.
Additives may cause engine damage that is
not covered by your New Vehicle Limited War-
ranty.
@ For the sake of the environment
— Before changing the engine oil, make sure
you can dispose of the used engine oil cor-
rectly.
— Engine oil must always be disposed of cor-
rectly. Do not dump it in the yard, in the for-
est,
or in open water, river channels, or sew-
ers.
— Have your used engine oil recycled by bring-
ing it to a used oil collection site or contact
a gas station.
248
Cooling system
The engine cooling system is filled with a mixture
of purified water and coolant additive at the fac-
tory. This coolant must not be not changed.
The coolant level is monitored using the g indi-
cator light. However, occasionally checking the
coolant level is recommended.
Messages
g Turn off engine and check coolant level. See
owner's manual
The coolant level is too low.
Stop driving and switch the engine off. Check the
coolant level > page 249.
— If the coolant level is too low, add coolant
=> page 249. Only continue driving once the in-
dicator light turns off.
/E| Coolant temperature: too high. Please let
engine run while vehicle is stationary
Let the engine run at idle for a few minutes to
cool off, until the indicator light turns off.
— If the indicator light does not turn off, do not
continue driving the vehicle. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.
|_| Coolant system: malfunction! Please turn
off engine
Do not continue driving, shut the engine off, and
switch the ignition off.
— See an authorized Audi dealer or authorized
Audi Service Facility for assistance.
Coolant additive
The coolant additive is made of anti-freezing and
corrosion protection agents. Only add the follow-
ing coolant additives mixed with distilled water.

Coolant additive Specification

Gl12evo TL774L

The amount of coolant additive that needs to be
mixed with water depends on the climate where >

4M8012721BF
Checking and Filling

the vehicle will be operated. If the coolant addi-
tive percentage is too low, the coolant can freeze
and damage the engine.




Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)

® Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
— If the G12evo coolant additive is not availa-
ble in an emergency, do not add any other
additive. You could damage the engine. If
this happens, only use distilled water and
restore the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— You can continue driving if the permitted
G12evo coolant additive was not added.
However, go to an authorized Audi dealer or
authorized Audi Service Facility immediately
to have the coolant replaced to reduce the
risk of engine damage.
— Due to the risk of engine damage, the cool-
ing system should only be refilled by an au-
thorized Audi dealer or authorized Audi
Service Facility. An authorized Audi dealer or
authorized Audi Service Facility can also pro-
vide you with important information about
the recommended coolant additive.
= 5 [RAZ-0540

MIN


Fig. 161 Engine compartment - Coolant expansion tank:
@ cover with release button; @) markings
Observe the safety precautions > page 242, Gen-
eral information.
Checking the coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 243.
» Check the coolant level in the coolant expan-
sion tank > page 244, fig. 159 using the outer
markings (2) > fig. 161. The coolant level must
be between the markings (2) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
>» When you add coolant to the expansion tank,
please refer to > page 248, Cooling system.
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion tank >@.
If you must add coolant, use a mixture of water
and coolant additive. Audi recommends mixing
the coolant additive with distilled water.
> Allow the engine to cool.
> Place a large, thick towel on the coolant expan-
sion tank cap.
> Push the release button @) © fig. 161 on the
cap and carefully turn it to the left until you
feel resistance > A\.
> Push the release button again and remove the
cap completely.
> Add coolant mixed in the correct ratio
=> page 248 up to the MAX marking.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
249

Checking and Filling

> Turn the cap to the right to tighten it until you
feel resistance a second time.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.

ZX WARNING
— The engine compartment in any vehicle is a
potentially dangerous area. Stop the engine,
switch the ignition off, and allow the engine
to cool before working in the engine com-
partment. Always follow the information
found in > page 242, General information.
— Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of
burns. The cooling system is under pressure.
When you no longer see or hear steam or
coolant escaping, you may open the engine
compartment with caution.
— When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away
from children. There is a risk of poisoning.

© Note
Do not continue driving if the coolant expan-
sion tank is empty. Do not add any coolant,
because air could enter the cooling system
and damage the engine. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.
250
Brake fluid

BFV-0229]


Fig. 162 Engine compartment: cap on brake fluid reservoir
Observe the safety precautions > page 242, Gen-
eral information.
Checking the brake fluid level
> Slide the cover that is located below the wind-
shield wipers on the driver's side toward the
windshield and remove the cover.
> Read the brake fluid level on the brake fluid res-
ervoir > page 244, fig. 159. The brake fluid lev-
el must be between the MIN and MAX markings
ANG
The brake fluid level is monitored automatically.
Messages
GG fi @® Brakes: stop vehicle and check brake
fluid level
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

A WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and
driving safety, which increase the risk of an

4M8012721BF
Wheels










Model/ Tire designation Tire pressure
Engine Normal load Maximum load
(up to 3 people)»
Front Rear Front Rear
PSI kPA PSI kPA PSI kPA PSI kPA
RS Q8: 295/40 ZR22 112Y 32 220 32 220 35 240 38 260
4.0L 155 mph (250 km/h)
8-cylinder o 295/40 ZR22 112Y 38 260 38 260 41 280 44 300
174 mph (280 km/h)
295/40 ZR22 112Y 41 280 41 280 46 320 49 340
190 mph (305 km/h)
295/35 ZR23 108Y 36 250 36 250 39 270 42 290
155 mph (250 km/h)
295/35 ZR23 108Y 44 300 44 300 46 320 49 340
174 mph (280 km/h)
295/35 ZR23 108Y 46 320 46 320 48 330 49 340
190 mph (305 km/h)


Z\ WARNING
Please note the important safe-
ty precautions regarding tire
pressure => page 266 and load
limits > page 269.

@) Two people in the front, one person in the rear
>) The tire pressure depends on the maximum permitted speed for your vehicle.
and sudden deflation that can
cause the vehicle to crash.
Your safety and that of your pas-
sengers also depends on making
sure that load limits are not ex-
ceeded. Vehicle load includes ev-
Tires and vehicle load limits erybody and everything in and on
the vehicle. These load limits are
There are limits to the amount of
load or weight that any vehicle
and any tire can carry. A vehicle (“GVWR”)
that is overloaded will not handle
well and is more difficult to stop.
Overloading can not only lead to
loss of vehicle control, but can al-
so damage important parts of the
vehicle and can lead to sudden
tire failure, including a blowout
technically referred to as the vehi-
cle’s Gross Vehicle Weight Rating
The “GVWR” includes the weight
of the basic vehicle, all factory in-
stalled accessories, a full tank of
fuel, oil, coolant and other fluids
plus maximum load. The maxi-
mum load includes the number of >
269

4M8012721BF

Luggage compartment lid with foot motion . 44

Panoramic glass roof............00 ee eee 47
SUTSHadE (FOOT): + wars a 2 womm a 2 cows © a rey 47
Sunshade (windows) ...............0005 46
Windows........... eee eee cece eee 46
Closing aid (power closing doors).......... 35
GOEKPIEIMIMING'. & wesisn ee cnncens 6 6 sexuene w ca0ee 55
Cockpit (overview) « «wes e wsen 6 eae seem 6
Collapsible spare tire...............00.. 292
Collapsible tire
refer to Collapsible spare tire........... 292
Coloreodetsss « «cams +s wines + seam oo were wo 313
COMBUSTION ENGINE sess ss warms v & sows ve 102
Coming home/Leaving home
refer to Entry/exit lighting.............. 53
Gompartmentsi: « «asec « « wsene 4 + weer «+ ee 83
Goripassin the mirrors « wees s exea as ween as 60
GComiplianee:: « sews = ¢ sews + o serps + ¢ ees 7 es 311
Conference calles: ¢ «seus 5 « ewes so wee eve 187
Configuration wizard.................04. 20
connect ..... 0... eee eee 192
Data PlariSe: s seas = x mews < ¢ ewe & eae wy 196
Datta Privacy tious x + sess + a aesuwn v wexeua ¥ theme 306
Emergency call................-000ee 197
Infotainent:: = « sees ¢ s cess « v news sp eee 192
Infotainment services............00005 193
Online roadside assistance............. 198
Vehicle control services................ 194
Connected devices
Device overvieW 0... ccc cece cece eens 235
Connections
referto Media.............-.+++- 220, 223
Consumer information.................- 308
Consumption
Reducing........... 0. eee eee eee eee 102
Consumption (fltel) « ssiccw: 2 a cow 2 0 neue © mes 16
Contacts
TI POFEA pose: « o sxsuess 9 01 ceri «0 umannce © oxenene 189
Updating inthe MMI.................. 189
alsovrefer to Directory’: . wiiws v wows o 2 eee 186
Convenience: key’: « swan: « + qeme sv seme ys seem 35
Convenience closing ..........0s..enees 47
also refer to Vehicle key 39
Convenience opening and closing
Windows or panoramic glass roof........ 47
Coolant temperature display.............. 14
Cooling MOd etic. i = scciin ee ecenere ee serene wv omen 91
Cooling system
Adding
coolant................-000 ee 249
Checking the coolant level............. 249
GOOlANE svc 2 x oes ov ewe eo a 2 o oe 248
Cornering lighti:. » 2 ces: = ews: o ees ee eee 51
Cross traffic assist (intersection assistant) .. 157
Cruise control system............000005 134
Cup holders. ....... 0 cece eee eee eee 82
Current consumption.............-0 eens 16
D
Data module
Serial:number (IMED) ¢ esses ss saan ss cause 189
Data plans... .... eee eee eee 196
Data Privacy...... 0... s cee cece eee 306
Date... eee eee 16
SGttiliG's s savau 3 ¥ RAH s 4 BeueS 4 E RaER ¢ Esa 2:33:
Daytime running lights................-. 51
Declaration of compliance...........0005 311
DEF (instrument cluster)...............4- 12
Demo mode
refer to Presentation mode............. 210
Destination onthe map...............4. 203
Details, . a resco « sxanene os stineoue i 6 omens mo auncems 203
Determining correct load limit........... 271,
Digital:compass sass «seas oo save oo sare 2 60
DIM@NSIONS. « s ween « seems oy noes 6 2 ew & e 3:13
Dimming the exterior mirrors............. 56
Dimming the rearview mirror............. 56
Directory........ 0.0.02... cece eee eee ee 186
BUSINESS Cat dsiies + » news oe wows ¢ pawe ws BE 187
SOEGINGS
cscs « 2 mazes & nenseee « scene © © amt « 189
Display
Cleaning...........0 0. 283
Disposal..... 0.02... ce eee eee eee eee ee 308
DistamG@ sericea & ssseie ss owes so covnine oo creme @ os 16
Distance: warning csvevs © « sce vs sseoee wo senses 146
Doors
Child safety lock...................000. 45
DOOrCONntactSWitch » + ceau sv sees gc aeam a: 54
Mechanically unlocking and locking....... 38
Power closing/closing aid............... 35
Driver information system.............--. 13
317

Index

Drives
refer to Media.............000 eee 220, 223
Drive select
refer to Audi drive select............... 111
Drive systeM..... ee eee eee ee ee 102, 104
Audi drive Select s cso 2 ¢ cawe 2 2 gence a ee 111
Driving down hills...............-0.00- 108
DriVinig Program. ¢ «mas xc ees + cess 98,145
Driving through water............-..005 109
Driving time... .. 6. cece ee eee eee eee 16
Driving tips
Driving through water................- 109
Efficientdriving
¢ wuss « ¢ cows se cows xe ea 102
Offroad driving............. cee eee eee 108
Uphill and downhill................00. 108
Driving track. . 22... . ee eee eee eee 107
Drivinguphills................02..000. 108
DVDEARIVG is 1 3 cosnees «x cemeeas =o sammate = x amemens © © 221,
E
ESimaibress « aaueos oo asawtan a x ansuw x aanwrne « ¥ sent 190
Settings................ 00. e ee eee 190
EDL
refer to Electronic Differential Lock...... 116
EDR
refer to Event Data Recorder (EDR)...... 303
Efficiency aSSiStie: + 2 swe » 2 mew 2 y aes oe: 135
Predictive comtrobenics + i ices « mesa 2 + sein 141
Electricalisystem’s « « sessce 2 seeona ee ene owe 251
Electromechanical parking brake......... 106
Electronic Differential Lock... 2.0... 006.. 116
Electronic immiobiliZer «0: se ecns ak mows sg os 40
Electronic Stabilization Control........... 116
Embedded SIM card............--.00005 193
EMMERGENCYZASSISE averse « o ssenee © oneuens «6 vnesane 157
Emergency assistance ................2. 286
Emergency braking function............. 107
Emergency call ws: <2 sce se vnc ve ee 188, 197
Emergency flashers..............---00-+ 53
Emergency mode............. essen eeee 101
Emergency operation
DOONS « sean oo een 2 5 een ©» em 2 ee Yo 38
FUCUREP OOP a. « sticesus c s want 1 aesene 6 ae 241
Luggage compartment lid............... 45
Panoraftiic Glass TOOT iss « ¢ savns s x eave 2 oc 48
318
Emissions control system..............- 241
ENergyCONSUMErSias « & sone + wae oo wae oo 0 Ly:
Energy management................005 102
Engine
Breaking iin’: « esis <0 cee & ecw ve eon ¥ 102
Coolant. ... 0... 2. eee eee eee eee 248
Enisrgency StOpiax « «sews + vee s = ees es He 95
JUMP StARtiNg so sews ov sei oo scones ow sense 293
Start/Stop system. ...... 0... eee ee eee 103
Starting/Stopping Engine compartment
Opening and closing the hood.......... 243
OVERVIEW '« eswisics oo cesses oo stance ow siete © 0 ae 244
Safety precautions..................0. 242
Engine data
refer to Sport displays.................. 15
Engine oil
AGOING & esccen 3 2 cconoa oe ee ao Sa oe 245
Changing........ 2. cece eee eee eee 247
Checking oil level.............---000-. 245
CONSUIMPUOliiss x 2 czers ¢ = wees 2 & Rew 2 owe 245
Indicator light............... 2.00000 245
Replacement interval................. 254
Temperature display.................-. 15
Engine sound
Audi driveselectix «asco: ss sseses «x seoune 9 «3 112
Engine’start system war » sw 6 2 awa 8 6 we 96
Engine stop
refer to Start/Stop system............. 103
Entry/exit Lightings «+ sci 6 « sae & 6 overan aa 53
Entry aSSistanees. « 2 sews oo sie 9 2 eee oo saree 65
also refer to Exit assistance............. 65
Environment
Unleaded gasoline..................0. 238
ESC
refer to Electronic Stabilization Control... 116
ESC Offroad... 1... eee ee eee 117
eSIM
refer to Embedded SIM card............ 193
Event Data Recorder (EDR).............. 303
Exit assistance... 0.2... eee ee eee 65
Exit warning ............... 5 eee sees 15S
Exterior antenna.............02-..0 eee 184
Exterior lighting.................02-000. 51
Exterior MUPFOPS sic 2 6 wma sv sew © meee © x 55
Folding settings ..............0000 0000s 36

4M8012721BF
Index

External voice operation................. 29
F
Factory default settings

Multi Media Interface................. 234
EASE OUTS sissses ow snaawee 0 x sons #9 seme a 0 onennns 201
FAVORITOS! & o cowsms w 6 cman 6 8 semua & wexees & renee 22
Bluetooth. .............. 0... eee eee 236
NaVIG@EION:: « + swe 9 o eee 5 ¢ oem & e eee 202
Telephone wwe «x cain © aesee e+ ence oo eee 186
Federal Communications Commission (FCC) . 311
File formats (media drives).............. 228
FOg (WINdOWS)ixw: 5 2 came y 5 anew ay aeew 5 2 Re 92
Folding the rearseats...............0005 86
Footwell temperature.............2.0005 93
For the sake of the environment
Disposing of engine oil................ 247
FUeLIRG!s © anecsns so answers & v annum © ¥ seems WH avose 239
Leaks... i eee eee eee eee 243
Fragrance... ... ee eee eee eee 92,93
Free text search
Media....... cee eee eee eee ee 227
R&GiOiss = = seus = = saupe & = ems 4 neoRE ee 214
also refer to Intelligent search.......... 201
Freeze protection
Coolant... .. 0. eee eee eee 248
Windshield washer system............. 254
Frequency band..........-..00 eevee ee 212
also refer to Frequency band........... 212
Front center armrest ....... 000. cece ee eee 65
Front collision warning
refer to Audi pre sense front............ 149
Front passenger’s seat adjustment
PRON. « ssweece xo aceane wo axevene ao coenaie w 6 ace 65
Rear... eee eee eee 65
Front wiper blades
ChanGinG’s + x same sy eames ¢ a eae ¢ HER Fe 58
Cleaning « « cvs sv even oe enn oe ence oo 58
FUGls sce ¢ x cage x 2 eee 7 o we Ye eee ee 238
TAGAIEIVES «scones x 5 sures @ 2 sxenene © 8 ommrane oa ot 239
Current consumption................... 16
Fueldisplay sec: = s sees ey seen sy eee ge es 12
Fuel-tank. capacity’: « scsi oo cise a 0 caves « 314
Gasoline
Reducing fuel consumption............ 102
Fueling
Fuel filler door..... 0.0... cece eee eee ee 239
Fuel filler door emergency release....... 241
Fueltankcapacity'. « 5 con es cone a wanna « 314
Functions on demand...............0.4. 194
Functions that require a license.......... 194
also refer to Functions on demand....... 194
G
Garage door opener............--0ee eee 48
GarMeNthOokS scesiiss sv cevevee oo ances o a wees 9 0 2 83
GaSOlING cy « x wares & 2 meee = 2 eee 4 ¢ eee 4 8 238
Additives ...... 0... cece eee eee 239
Gasoline mixture ...............0000ee 238
GAWR
refer to Gross Axle Weight Rating (GAWR) . 314
Gears... eee 97
Glossary of tire and loading terminology... 259
Glove compartment..............000 eee 83
G meter
refer to Sport displays.................. 15
Gross Axle Weight Rating (GAWR)........ 314
Gross Vehicle Weight Rating (GVWR)...... 314
GVWR
refer to Gross Vehicle Weight
Rating (GVWR) « ssope « 2 wecne 2 2 ceuee & 2 ces 314
H
Hanastrees « « asms = eevee § = netR se HOR Se 182
Hatids Free Profiles « 2 swcas x x agus ¢ 2 ems 2 182
Head-up display
AGjUSUING was +» ences 3 ¢ swe yo ees oy eee = 27
Adjusting the brightness................ 55
Operating...............0 0. cece eee 27
Headlight range control................05 51
Headlights
ClOSNiNG’s = = cams ¢ 5 eas 7 o Seas tS ee Ea: 281
Headlight range control................ 51
Washer system... 1.2... 00. e cee ee eee 57
Washer system (filling washer fluid)... . . 254
Head restraints
ACIUSEINGisyes x = sewas 3 2 gas x & eewR = # aR x 67
Removing and installing................ 67
Heated rear window .........000 sees eeeeen 92
Heated steering wheel.................0. 93
319