differential AUDI A8 2021 Owners Manual

Driving dynamic

There is a malfunction in the electronic steering
lock. You cannot turn the ignition on. Secure the
vehicle against rolling before exiting the vehicle
=> page 108. Do not tow your vehicle because it
cannot be steered. See an authorized Audi dealer
or authorized Audi Service Facility for assistance.
a Steering: malfunction! You can continue
driving
There is a malfunction in the steering system.
Steering may be more difficult or more sensitive.
Adapt your driving style. Have the steering sys-
tem checked immediately by an authorized Audi
dealer or authorized Audi Service Facility. Please
note that the red indicator light may turn on af-
ter restarting the engine. Do not continue driving
if it does.
& Steering: malfunction! Adapt driving style.
Larger turning radius
The rear axle steering may have failed. The vehi-
cle will have a larger turning radius, and the sta-
bility when driving around curves will be compa-
rable to a vehicle without rear axle steering. Drive
carefully to an authorized Audi dealer or author-
ized Audi Service Facility to have the malfunction
corrected.
BS Steering lock: malfunction! Please contact
Service
There is a malfunction in the electronic steering
lock. Drive immediately to an authorized Audi
dealer or authorized Audi Service Facility to have
the malfunction repaired.
Dynamic steering: correcting steering wheel
position
The steering is reinitializing. The steering wheel
will move easily after starting the vehicle. Reiniti-
alization might be necessary if the steering wheel
was moved while the engine was switched off.
The display turns off if the initialization was suc-
cessful.

ZX WARNING
Do not tow your vehicle if there is a malfunc-
tion in the electronic steering lock because
this increases the risk of an accident.

128
G) Tips
— If there is a malfunction, the steering wheel
may be crooked when driving straight.
—If the a or & indicator light only stays on
for a short time, you may continue driving.
All wheel drive (quattro)
Applies to: vehicles with all wheel drive
The all-wheel drive system distributes the driving
power variably to the front and rear axle to im-
prove the driving characteristics. It works togeth-
er with selective wheel torque control, which can
activate when driving through curves
=> page 129.
The all-wheel drive system is designed for high
engine power. Your vehicle is exceptionally pow-
erful and has excellent driving characteristics
both under normal driving conditions and on
snow and ice. Always read and follow safety pre-
cautions > A\.

Z\ WARNING
— Even in vehicles with all wheel drive, you
should adapt your driving style to the cur-
rent road and traffic conditions to reduce
the risk of an accident.
— The braking ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not different from a two wheel drive vehi-
cle. Do not drive too fast because this in-
creases the risk of an accident.
— Note that on wet streets, the front wheels
can “hydroplane’” if driving at speeds that
are too high. Unlike front wheel drive
vehicles, the engine RPM does not increase
suddenly when the vehicle begins hydro-
planing. Adapt your speed to the road condi-
tions to reduce the risk of an accident.
Sylar)
Applies to: vehicles with sport differential

The sport differential distributes the drive power
to the rear axle based on the situation. The goal
is a high level of agility and ability to accelerate >

4N0012721BF
Driving dynamic

on curves. The vehicle is very responsive to steer-
ing. The settings depend on the selected Audi
drive select* mode.
Messages
t-3} Sport differential: malfunction! Please con-
tact Service
Drive immediately to an authorized Audi dealer
or authorized Audi Service Facility to have the
malfunction repaired.
r3] Sport differential: temperature too high.
Please adapt driving style
The transmission temperature has increased sig-
nificantly due to the sporty driving manner. Drive
in a less sporty manner until the temperature re-
turns to the normal range and the indicator light
switches of.

Z\ WARNING
Contact an authorized Audi dealer or author-
ized Audi Service Facility if the sport differen-
tial is faulty or malfunctioning. The repair
must be performed by trained personnel us-
ing
the correct oil in order to ensure safety.

Electronic Stabilization
Control
Electronic Stabilization Control (ESC) supports
driver safety. It reduces the risk of slipping and
improves driving stability. ESC detects critical sit-
uations, such as if the vehicle is oversteering or
understeering, or if the wheels are spinning.
The brakes are applied or the engine torque is re-
duced in order to stabilize the vehicle.
The following stabilization functions are integrat-
ed into the ESC, among others:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking when brak-
ing. The vehicle can still be steered even during
hard braking. Apply steady pressure to the brake
pedal. Do not pump the pedal.
A pulsing in the brake pedal indicates that the
system is acting to stabilize the vehicle.
Anti-Slip Regulation (ASR)
ASR reduces drive power when the wheels begin
spinning and adapts the power to the road condi-
tions. This will increase the driving stability.
Electronic Differential Lock (EDL)
The EDL applies the brakes to wheels that are
slipping and transfers the drive power to the oth-
er wheels. This function is not available at higher
speeds.
In extreme cases, EDL automatically switches off
to keep the brake on the braked wheel from over-
heating. The vehicle is still functioning correctly.
EDL will switch on again automatically when con-
ditions have returned to normal.
Selective wheel torque control
Selective wheel torque control is used when driv-
ing on curves. Braking is targeted toward the
wheels on the inside of the curve as needed. This
allows more precise driving in curves.
Power steering
The ESC can also support vehicle stability
through steering.

ZA\ WARNING
—The ESC and its integrated systems cannot
overcome the limits imposed by natural
physical laws. This is especially important on
slippery or wet roads. If the systems begin
acting to stabilize your vehicle, you should
immediately alter your speed to match the
road and traffic conditions. Do not let the in-
creased safety provided tempt you into tak-
ing risks. This could increase your risk of a
collision.
— Please note the risk of a collision increases
when driving fast, especially through curves
and on slippery or wet roads, and when driv-
ing too close to objects ahead. There is still
a risk of accidents because the ESC and its
integrated systems cannot always prevent
collisions.

129

4N0012721BF
Fuses and bulbs





















































Fuse panel () (black) Fuse panel @) (brown)
Luggage compartment lid central locking, 15 |Left rear seat adjustment
11 | fuel filler door, sunshade, luggage com- Front belt tensioner on front passenger's
partment cover 16 side
12 | Luggage compartment lid control module
— Fuse panel (4) (black)
Fuse panel (2) (red) No. | Equipment
No. | Equipment Seat ventilation, rear seat heating, rear-
1 | Rear climate control system blower 1 |view mirror, refrigerator, diagnostic con-
2 | Exterior antenna nection
3 | Exhaust treatment, sound actuator 2 | Gateway control module (communication)
4 |Rear climate control system control panel 3 [Sound actuator
5 | Right trailer hitch light 4 |Transmission heating valve
6 |Trailer hitch positioning motor 5 |Engine start, electric drive
7 |Trailer hitch release 7 |Active accelerator pedal
8 | Left trailer hitch light 8 | Night vision assist, active suspension
9 |Trailer hitch socket 9 _|Adaptive cruise assist
10 |Allroad sport differential 1 Intersection assistant, driver assist sys-
11 | Exhaust treatment tems, radar systems, camera systems
12 |48 V drivetrain generator 2 || Exteriorsoundigenerator
13 | USB input
Fuse panel (3) (brown) 14 [Right headlight
No. | Equipment 15 |Left headlight
1 |Driver assistance systems control module :
2 |Rear Audi phone box Fuse panel () (red)
3 | Rear seat adjustment No:.| Equipment
4 |Side assist 1 | Active suspension
5 |Sereensinthe rear 2 |Service disconnect switch
6 |Tire pressure monitoring system 3_|Refrigerator
7 [Emergency call system 4 | Electric drive system
Auxiliary heating radio receiver, tank mod- 5 |/Brake-system
8 ule 6 | High-voltage battery water pump
9 | Automatic transmission selector lever 7 |Auxiliary climate control
0 TV tuner, data exchange and telematics 8 |Climate control system compressor
control module 9 |Auxiliary battery control module
rT Convenience access and start authoriza- 10 | High-voltage battery
tion control module 11 | High-voltage charger
12 | Garage door opener 14 | Thermal management
13 | Rearview camera, peripheral cameras 15 | Thermomanagement control module
Convenience system control module, right -
14 | Vil light Fuse panel 6) (white)
No. | Equipment
1 |Rear center armrest heating

331

Detailsts » swccu © x wweove ox seivean a x seme 2 2 wees 233)
Determining correct load limit........... 303
Digital compass ..............0 eee eee 68
DIMENSIONS): « : wees « « wees sg eas ge eR ae 343
Dimming the exterior mirrors............. 64
Dimming the rearview mirror............. 64
Directory .... 2... eee cee eee eee 216
BUSINGSS;Card wen = waam 2 2 weien x > mane a o 216
SeOttiNQS: css « serene ¢ v suewas ev ere Sw eee & 219
Display
CLEARTITG Ae = «: susnens a oi urea ao cieeie « 0) anetine 0 i 313
DispOSalecie «+ sssoee a 0 ensues wo mezess vv arate @ 338
DistamC@ enc o «vse ov wasen a a oawe 2 a wm ¥ os 16
Distance warning sews so ssc + awson 9 & secon 175
Doors
Ghildisafiety lOGk seccas x 0 neue x cnemen « 0 aseasin 3 51
Door contact switch...............200-. 62
Mechanically unlocking and locking....... 44
Power closing/closing aid............... 41
Driver information system................ 13
Drives
refer to Media...............0-4- 250, 253
Drive select
refer to Audi drive select............... 124
Drive systeM.... 0.0... ee eee eee eee 114, 118
Audi drive select .............0.000008 124
Driving down hills.............2.-00 eee 122
Driving program........ see e eens 110,174
Driving through water.................. 122
Drivingueiime’, so sxeusie «i coissen © a onmvire © eaten wo 2 16
Driving tips
Driving through water...............-- 122
Efficient driving : see: sy esse ss ores 5 ces 116
Uphill and downhill................... 122
Driving UpHillsss « » sess x = wavs a & saws 2 5 wee 122
DVDidfivein: « « saves 2 = cms 5 2 ewes & ese Fe 251
Dynamic all-wheel steering.............. 127
E
| 220
S@CtiNGS news « woes © s woos 4 & ween & 3 rane 220
EDL
refer to Electronic Differential Lock...... 129
EDR
refer to Event Data Recorder (EDR)...... 333
348
Efficiency assiStccc «sows 6 = meee ow eeaee ¥ o 164
Predictive control...............00005 170
Electrical system ..... 0.0... 0. eee eee ee 284
Electric range... . 2... eee eee eee 238
Electromechanical parking brake......... 121
Electronic Differential Lock.............. 129
Electronic immobilizer sss. 5 s een so mayen 4 os 46
Electronic Stabilization Control........... 129
Embedded SIM card s « saga « ¢ secon ae was ¢ 3 223
Emergency assist. ..........00-.0ee eee 186
Emergency assistance.................. 317
Emergency braking function............. 121
Emergency call...............-00. 218, 227
Emergency flashers.............---000-- 61
Emergency Mode w icies saw es cee ee een 112
Emergency operation
DOORS iss secwous « os exewans = x caamene = exanems = > wR & = 44
Fuel filler door... ..... 00... eee eee eee 273
Luggage compartment lid............... 51
Panoramic:glass rOOF sre. 6 2 sree «2 severe o oe 54
Emissions control system.........-.0005 273
Eneroy COnsUMMersios se neww + wen a s eee a sg 16
Enéroy flow display’: sce: ss swam + s aes vee 115
Energy management............--...0- 117
Energy recovery.............0..0.0000. 114
Engine
Breakinigniti's « seus « segues x ¢ awe 3 eee Ze 114
Coolant. ascvons vs acne wo awcvces 0 a semana w stamese 281
Emergency stop.......--..00-.ee eee 107
JUMP StACING « ¢ gems + a eee gy eS 8s ee 323
Start/Stop system « secs so sews oe enews ¥ oo 117
Starting/stopping.............0.-000 107
Engine braking effect
refer to Recuperation................. 114
Engine compartment
Opening and closing the hood.......... 276
OVERVIEW « cscs +o soeces «a sserens wo aewens © a ow 277
Safety precautions..............0000 0 274
Engine oil
AGING « xsins < = cevan ¢ § Sates 7 5 Ee FS ESR 277
CHANGING ie: @ 2 ween 2s eee sa ee oe ewe 2 280
Checking oil level... .. 0... . cee ee eee eee 277
Consumption....................200- 277
Indicator lights. 5 ws s ewes » s wwe as eens 278
Replacement interval................. 287
Temperature display................0-. 1s

Index

Socket
refer to Power sourceS...... 0002+ eee eee 94
Software information
Legal information..............000eee 266
Software version (MMI)
Version information...............0.. 266
Sound
refer to Adjusting the sound............ 263
Space-saving spare tire (compact spare tire) . 323
SPArGctire’s « s wey » o wee 2 Raw & 2 BOR Ge Oe 323
Speed limit information
refer to Traffic sign recognition......... 155
Speed limits
refer to Traffic sign recognition......... 155
Speedometer’. wesive so svessve sv aves sv amen ve 12
Speed warning system............000005 155
Sport differential sis s & seins se nae ae eee 128
Start/Stop System: « « zausx & = sense s ¥ peuey s 2 117
MeSSAGQES: crseicee vs esses vo secnene wv anes ow aes 118
Switching offandon...............00. 118
Starting climate control after unlocking.... 105
Starting to drive......... 2. eee eee eee 108
Starting (engime)'. « + esses ss snus + 6 sone vo 3 118
SECON Gis ws. cewaens o 6 setae 3 6 meee oo MEE = wo 127
Audi drive select. ......... 0.00000 e ae 124
also refer to Steering..............055 127
Steering lock.............000-000- 107, 127
Steering wheel
AGjUStING sxc = s eemn : oe gems =v eee eo eeR = 78
Shiftepaddles « wesnise ov wana 2 ¥ sues ae sures a 111,
Steering wheel heating................ 104
also refer to Multifunction steering wheel. . 13
Steps for determining correct load limit... 303
Stopover (navigation) .................. 234
Stopping............. 0... ce eee ee eee 108
Stopping the vehicle................... 108
Stopping (ENGINE) swiss « scseas 6 sosens vw avtvens 118
StOrag@iiss os ons x 0 wnwas ow meson ow a & BEHEK 95
Storage area behind the rear head restraints. 96
Storage compartment.......:.eeeceee eee 97
Stored stations
refer'to Presets ex «. seccoa se owen wees ee 245
Subtitles
DVD... eee 257
356
Sunshade
Rear side windows .........-.0 eee eee eee 52
Rear WindOWeris ease 2 yew x 2 WAGE ae RoR 55
ROOF: «5 swan 2s swavece vx asentoe ¥ ceamens a a meee 2 a 53
also refer to Panoramic glass roof........ 53
SUMVISORS:« ssisteae » esosent o wueieon © o: ayesnie w aonexe 65
Surface Weatin gees x « encase + a wise» x een © 103
SUSPENSION ¢ cisvsn is owes o ormeecs « oer © 8 Os 125
Audi drive select...............000 00 124
Swapping calls............. 0c eee eae 217
SWERVCMSSISLE: sensi « iesans av cruem s & omoerue 181
Symbols
Charging equipment................0- 138
NaviGatiOnizaye + sans ¢ sanse ¢ 3 Naam 6 2 rea 234
TAP I Cts x © saanees a x seamne so aoEMMG & ¥ coatON a 8 239
also refer to Indicator lights.............. 7
SYNC (climate control system) ........... 101
System SOttingSs « sess co sews © o cows « ¥ soseene 263
T
Tachometetiican <& asiwn se iasin a + esas ow 12,14
Tail lights
Cleaning........ 0... cece eee a1
Technnicalidata. «cscs ox secvie « o cmmaue 4 o conn 343
Rear Seat Remote.............0--0000- 29
Screens imtheitear’: « s sss y = yazan ss wou 9 sg 32
Technical modifications................. 338
Telephone.......... 0c cee ee eee eee 209
Accepting/ending acall................ 217
Audi PhOMe DOK ies so wise s worse 6 eee os 211:
Charging the battery (USB)............. 212
Charging the battery (wireless)......... 213
Connecting a mobile phone............ 209
Dialinganumber...........--..00000- 217
Exterior antennas. is cses a scam ae epee a 212
Mobile device reminder signal.......... 213
Options during aphonecall............ 217
Playing tUSi¢ « seus < ¢ eee sv ees ce eee 251
Temperature display (outside temperature) .. 15
Temperature gauge
GOOLSMTE « sees x 2 sews « & ete © F meme e RoE 12
TeXtinbut : aces « < sean: 5 ¢ ewe 5 os ewe ©» eee 25
Text messageS...........0 0000000000 219
S@ttiNGS seu s = news & ¥ eee se Hewes eee 219
also refer to Text messages............ 219
Wied owinsts ws svesies 2 os amcceue 3 9 aveviens v wucwane we cei 98