2021 AUDI A8 sensor

Wheels

be five 150 lbs. passengers in
your vehicle, the amount of
available cargo and luggage
load capacity is 650 lbs.
(1400-750 (5 x 150) = 650
lbs.)
5. Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely ex-
ceed the available cargo and
luggage load capacity calculat-
ed in Step 4.
6. If your vehicle will be towing a
trailer, load from your trailer
will be transferred to your vehi-
cle. Consult this manual to de-
termine how this reduces the
available cargo and luggage
load capacity of your vehicle.
>Check the tire sidewall
(=> page 290, fig. 187) to deter-
mine the designated load rating
for a specific tire.
Wheel bolts and rims
Wheel bolts
Wheel bolts must be clean and loosen/tighten
easily.
Rims
Rims with a bolted rim ring* or with bolted wheel
covers* consist of multiple pieces. These compo-
nents were bolted together using special bolts
and a special procedure. You must not repair or
disassemble them > A\.
304

ZA WARNING
Wheel bolts that are tightened or repaired in-
correctly can become loose and result in loss
of vehicle control, which increases the risk of
an accident. For the correct tightening specifi-
cation, see > page 323, Finishing.
— Always keep the wheel bolts and the threads
in the wheel hub clean and free of grease.
— Only use wheel bolts that fit the rim.
— Always have damaged rims repaired by an
authorized Audi dealer or authorized Audi
Service Facility. Never repair or disassemble
rims yourself, because this increases the risk
of an accident.
Loose wheel warning
Applies to: vehicles with loose wheel warning


Within the limits of the system, the loose wheel
warning in the instrument cluster warns you if
one or more wheels are loose.
Using the ABS sensors, the loose wheel warning
system compares the vibration characteristics of
the individual tires. If one or more wheels are
loose, it will be indicated in the instrument clus-
ter display with the fi indicator light and a mes-
sage. If only one wheel is affected, the location
of that wheel will be indicated.
Messages
fi Wheel bolts loose. Please safely stop the ve-
hicle and check all wheel bolts!
Loose wheel warning for at least one wheel > A\.
Check the wheel bolts on all wheels with the
wheel wrench (vehicle tool kit). Have the tighten-
ing specification checked as soon as possible with
a torque wrench. Drive carefully until then. For
the correct tightening specification, see
=> page 323, Finishing.
fl Wheel assessment active. Please continue
driving carefully
After this message appears and you have checked
the wheel bolts, the assessment phase begins
when the vehicle is in motion. This may take sev-
eral minutes.

Wheels

If the tire pressure monitoring indicator
appears
Applies to: vehicles with Tire Pressure Monitoring System in-
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
Using the ABS sensors, the tire pressure monitor-
ing system compares the tire tread circumference
and vibration characteristics of the individual
tires. If the pressure changes in one or more
tires, this is indicated in the instrument cluster
display with an indicator light (J and a message.
If only one tire is affected, the location of that
tire will be indicated.
The tire pressures must be stored again each
time you change the pressures (switching be-
tween partial and full load pressure) or after
changing or replacing a tire on your vehicle
= page 308. The tire pressure monitoring system
only monitors the tire pressure you have stored.
Refer to the tire pressure label for the recom-
mended tire pressure for your vehicle
=> page 299, fig. 190.
Tire tread circumference and vibration character-
istics can change and cause a tire pressure warn-
ing if:
— The tire pressure in one or more tires is too low
— The tires have structural damage
— The tire was replaced or the tire pressure was
changed and it was not stored > page 308
— Tires that are only partially used are replaced
with new tires
Indicator lights
If the @ indicator light turns on, there is a loss
of pressure in at least one tire .> A\ Check the
tires and replace or repair if necessary. Check and
correct
the pressures of all four tires and store
the pressure again > page 308.
ia Tire pressure: malfunction! See owner's
manual
if io appears after switching the ignition on or
while driving and the @ indicator light in the in-
strument cluster blinks for approximately one
308
minute and then stays on, there is system mal-
function. Try to store the correct tire pressures
= page 308. In some cases, you must drive for
several minutes after storing the pressures until
the indicator light turns off. If the indicator light
does turn off or turns on again after a short peri-
od of time, drive to an authorized Audi dealer or
authorized Audi Service Facility immediately to
have the malfunction corrected.

Z\ WARNING
— If the tire pressure indicator appears in the
display, reduce your speed immediately and
avoid any hard steering or braking maneu-
vers. Stop as soon as possible and check the
tires and their pressure.
— The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
— Under certain conditions (such as a sporty
driving style, winter conditions, or unpaved
roads), the tire pressure monitoring system
indicator may be delayed.

G) Tips
—The tire pressure monitoring system can al-
so stop working when there is an ESC mal-
function.
— Using snow chains may result in a system
malfunction.
—The tire pressure monitoring system in your
Audi was calibrated with “Audi Original
Tires” > page 296. Audi recommends using
these tires.
Storing tire pressures
Applies to: vehicles with Tire Pressure Monitoring System in-
dicator
If the tire pressure changes or a tire is replaced,
it must be confirmed in the MMI.
> Before storing the tire pressures, make sure the
tire pressures in all four tires meet the speci-
fied values and are adapted to the load
> page 299.
> Switch the ignition on.
>» Applies to MMI: Select on the home screen: VE-
HICLE > Settings & Service > Tire pressure >

Care and cleaning

Care and cleaning
General information
Regular, proper care helps to maintain your vehi-
cle's value. It can also be a requirement when
submitting warranty claims for corrosion damage
and paint defects on the body.
The required cleaning and care products can be
obtained from an authorized Audi dealer or au-
thorized Service Facility. Read and follow the in-
structions for use on the packaging.

ZA\ WARNING
— Using cleaning and care products incorrectly
can be dangerous to your health.
— Always store cleaning and care products out
of reach of children to reduce the risk of poi-

soning.

@ For the sake of the environment
— Purchase environmentally-friendly cleaning
products if possible.
— Do not dispose of cleaning and care prod-
ucts with household trash.
Car washes
The longer that deposits such as insects, bird
droppings, tree sap or road salt remain on the ve-
hicle, the more the surface can be damaged. High
temperatures such as those caused by sunlight
increase the damaging effect.
Before washing, rinse off heavy deposits with
plenty of water.
Stubborn deposits such as bird droppings or tree
sap are best removed with plenty of water anda
microfiber cloth.
Also, wash the underside of your vehicle once
road salt stops being used for the season.
Pressure washers
When washing your vehicle with a pressure wash-
er, always follow the operating instructions pro-
vided with the pressure washer. This is especially
important in regard to the pressure and spraying
distance. Do not aim the spray directly at the
310
seals on the side windows, doors, hood, luggage
compartment lid, or sunroof*, or at tires, rubber
hoses, insulating material, sensors*, camera
lenses*, or the laser scanner*. Keep a distance of
at least 16 inches (40 cm).
Plug-in hybrid drive: Do not direct the stream of
water towards the wall mount clip*.
Do not remove snow and ice with a pressure
washer.
Never use cone nozzles or high pressure nozzles.
The water temperature must not be above 140 °F
(60 °C).
Automatic car wash
Spray off the vehicle before washing.
Make sure that the windows and roof* are closed
and the windshield wipers are off. Make sure that
the vehicle is still able to roll during the washing
process in the car wash. Follow instructions from
the car wash operator, especially if there are ac-
cessories attached to your vehicle.
If possible, use car washes that do not have
brushes.
Washing by hand
Clean the vehicle starting from the top and work-
ing downward using a soft sponge or cleaning
brush. Use solvent-free cleaning products.
Washing vehicles with matte finish paint by
hand
To reduce the risk of damaging the paint when
washing, first remove dust and large particles
from your vehicle. Insects, grease spots, and fin-
gerprints are best removed with a special cleaner
for matte finish paint.
Apply the product using a microfiber cloth. To re-
duce the risk of damaging the paint surface, do
not use too much pressure.
Rinse the vehicle thoroughly with water. Then
clean using a neutral shampoo and a soft micro-
fiber cloth.
Rinse the vehicle thoroughly again and let it air
dry. Remove any water residue using a chamois. >

4N0012721BF
Care and cleaning


height and width of the inside of the car
wash.
ZA WARNING
—To reduce the risk of accidents, only wash
the vehicle when the ignition is off and fol-
low the instructions from the car wash oper-
ator.
—To reduce the risk of paint damage, do not
wash the vehicle in direct sunlight.
—To reduce the risk of damage, do not wash
decorative decals* with a pressure washer.
—To reduce the risk of damage to the surface,
do not use insect removing sponges, kitchen
sponges, or similar items.
— When washing matte finish painted vehicle
components:
—To reduce the risk of cuts, protect yourself
from sharp metal components when wash-
ing the underbody or the inside of the wheel
housings.
— After washing the vehicle, the braking effect
may be delayed due to moisture on the
brake rotors or ice in the winter. This in-
creases the risk of an accident. The brakes
must be dried with a few careful brake appli-
cations.
— To reduce the risk of damage to the sur-
face, do not use polishing agents or hard
wax.
— Never use protective wax. It can destroy
the matte finish effect.
@) Note — Do not place any stickers or magnetic
signs on vehicle components painted with
matte finish paint. The paint could be
damaged when the stickers or magnets
are removed.

— If you wash the vehicle in an automatic car
wash, you must fold the exterior mirrors in
to reduce the risk of damage to the mirrors.
Power folding exterior mirrors* must only
be folded in and out using the power folding (@) For the sake of the environment
function.
—To reduce the risk of damage to the rims
and tires, compare the width between the
wheels on your vehicle with the distance be-
tween the guide rails in the car wash.
—To reduce the risk of damage, compare the
height and width of your vehicle with the
Only wash the vehicle in facilities specially de-
signed for that purpose. This will reduce the
risk of dirty water contaminated with oil from
entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehicle are not listed, consult an authorized Audi dealer
components, refer to the following tables. The or authorized Audi Service Facility. Also follow
information contained there is simply recommen- __ the information found in > A.
dations. For questions or for components that
Exterior cleaning




Component Situation Solution
Windshield wiper | Deposits Soft cloth with glass cleaner, > page 67
blades
Headlights/ Deposits Soft sponge with a mild soap solution®
tail lights
Sensors/ Deposits Sensors: soft cloth with a solvent-free cleaning product
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning sol-
ution
Snow/ice Hand brush/solvent-free de-icing spray >

311

4N0012721BF
Fuses and bulbs


This can cause damage to the electrical sys-
tem and increases the risk of fire.

Fuse panel (2) (brown)


() Note
If a new fuse burns out again shortly after you
have installed it, have the electrical system
checked as soon as possible by an authorized
Audi dealer or authorized Audi Service Facili-
ty.
@ Tips
— The following table does not list fuse loca-
tions that are not used.
— Some of the equipment listed in the follow-
ing tables applies only to certain model ver-
sions or certain optional equipment.
Fuse assignment - left footwell
Fig. 209 Left footwell: fuse panel with plastic clip

Fuse panel @ (brown)
No. | Equipment

Engine ignition coils

Engine start, electric drive clutch

Windshield wiper control module

Left headlight electronics


Ul
WIN)
eR
Climate control system blower

6 | Instrument panel

Windshield wipers

Zz
8 |High-voltage heating, compressor
9 Panoramic glass roof

Fuse panel (2) (black)
No. | Equipment

1 |Engine mount

N Left rear door control module

Windshield washer system/headlight
washer system




4 |Right headlight electronics
5 | Front seat heating
6 |Right rear door control module
7 |Sockets
8 | Left front door control module
9 |Parking heater
Fuse panel @) (red)

No. | Equipment

Anti-theft alarm system

Engine control module

Horn

Parking brake

Diagnostic interface

Roof electronics control module

WOlLOINI
DI
WIN]
rR
Driver assistance systems control module

10 | Airbag control module

Electronic Stabilization Control (ESC), An-
LL
ti-Lock Braking System (ABS)

Rear climate control unit, diagnostic con-
12
nector, light/rain sensor


Climate control system, vehicle electrical
13
system control module

14 | Right front door control module

Climate control system compressor, vehi-
15
cle electrical system control module

16 | Brake system pressure reservoir

Fuse panel (@) (black)

No. | Equipment


1 |Engine components

329

Fuses and bulbs








Fuse assignment - left side of cockpit
RAZ-0202

Fig. 210 Left side of the cockpit: fuse panel with plastic
clip






Fig. 211 Left side of the luggage compartment: fuse panel
with plastic clip
2 | Engine components 10 | Volume control
3 | Engine components 11 | Light switch, switch panels
4 |Engine components 12 | Steering column electronics
5 | Brake light sensor 14 | MMI Infotainment system control module
6 | Engine components 15 |Steering column adjustment
7 |Engine components 16 | Steering wheel heating
8 | Engine components
9 | Engine components ae ft side of the luggage
10 | Oil pressure sensor, oil temperature sensor (eelar|PEINE Ee
11 | Engine components g
12 | Engine components
13 | Engine cooling
14 | Engine control module, fuel injectors
15 | Engine sensors
16 | Fuel pump









330
No. Equipment No. | Equipment
Climate control system, interior air sensor 1_| Thermal management
2 | Audi phone box 5 |Air suspension/suspension control
Climate control system, fragrance system, 6 |Automatic transmission control module
3 particulate matter sensor 7 |Right rear seat adjustment
4 |Head-up display 8 | Rear seat heating
S_ |Audi music interface, USB input 9 |
Left tail light
6 |Instrument panel 10 | Front belt tensioner on driver's side
7 | Steering column lock
8 |Upper/lower display
9 |Instrument cluster

4N0012721BF
Index

A
A/C cooling mode............ eee eee eee
A/C system refrigerant oil...............
Accelerator pedal.............2--00000-
also refer to Accelerator pedal..........
ACCESSOFICS 2. eee
Active lane assist
refer to Lane departure warning.........
refer to Lane guidance................
Active SuSpenSiOt es ¢ « ccs so ewe ss eewe ss
Adaptive cruise assist................04.
Cleaning the sensors.............0 0005
Adaptive cruise control
Predictive control..............000005
Adaptive speed assist
refer to Adaptive cruise assist..........
Adjusting the air distribution............
Adjusting the brightness.................
Adjusting the sound.................005
Adjusting the temperature..............
Adjusting the vents.................05.
Adjusting the volume..............00-00-
Adjusting the volume (announcements) ... .
Adjusting the welcome sound............
Airbag system... 2... ee eee eee
Air suspension..............00 000-00 ee
Alarm system
refer to Anti-theft alarm system..........
Alignment pin (changing the wheel).......
All-weather lights...............-.00000.
Allseasontires...............00 eee eee
All wheel drive
refer to quattro... .... eee eee eee
Amazon Alexa integration
Media playback.................00005
QPerating « « ses so secs oo moms 9 wa & ¥ BRE
AMI
refer to Audi music interface...........
Android Auto
refer to Audi smartphone interface......
Anti-lock braking system............0065
Anti-Slip Regulation.................05.
Antietheftalarmr system siccs oe owes oc cna «
Anti-theft wheel bolts..................
Apple CarPlay
refer to Audi smartphone interface...... 261
Aspect ratio
NidGO verse < ¢ seven & 5 seaRE ze SeHER Fo Bee 255; 257
ASR
refer to Anti-Slip Regulation............ 129
Audi adaptive light...............-..000- 58
Audi connect
MEFEPTONCONNECE: « «esses oo wesc ow xem ¥ v0 222
AUGIGriVe’SelECt ios: « « suas > gemy 2 x seme gee 124
Audi e-tron compact charging system..... 140
Adjusting the charging power level...... 140
Changing or attaching the power cable... 145
SECUCINGls » 5 seme ¢ 9 same < a eR Eee EOE ne 145
Status and malfunction indicators....... 141
Audi musiciintertace sas ss iwes se gee ay oo 252
UGGS iexsy: a 2 wares & & gee & 2 eR Ee ER 253
Audi phone BOX eis 5 y omnes 5 3 eas «8 ews 211
Audi presense........ 0.00 e cee eee eee 178
MGSSAGES saws + & cmer 9 ¢ cemes 9 o ews 8 9 ee 182
Audi pre sense front.............eeeeeee 179
Audi side assist
refer to Side assist............-.00000. 182
Audi smartphone interface.............. 261
Legaliinformationi. . soe. s + scars se cesses ¥ 266
Audi virtual cockpit
refer to Instrument cluster.............. 12
AUTO
Automatic headlights.................. 58
Climate control system..............5- 101
Auto Lock (central locking) ............... 41
Automatic climate control system
refer to Climate control system......... 100
Automatic luggage compartment lid.... 49,50
Automatic transmission...............- 109
Parking lock emergency release......... 112
Automatic wipe/wash system............. 66
Auxiliary climate control................ 104
Average consumption.................-- 16
Average speed ..... 0... cece ccc eee renee 16
B
Bag hooks........ 0... eee eee eee eee 97
Band
refer to Frequency band............... 242
345

4N0012721BF

Interior lighting © ssc ve snes vo ene oo oe 62, 63
Interior MONITONING & & sis so ese oe eee oo 44
Intermittent mode (windshield wipers) ..... 66
International travels « wow» ss eau 4 a worms & 225
Internet
refer toCOnnect « sews «wien oo ewes eo oe 222
Internet radio
refer to Online radio.............. 246, 247
Intersection assistanteoes « scsi so sien oo one 185
TOMIZEPS < sce oo case w % esorm 6 > oom sw OTR 102
iPhone
refer to Audi music interface........... 252
J
JUMMPEStartin gions 6 o sess + a sane oo secu vo ave 323
K
ROY, cassis oe emia oo mee 6 © arenas oo ene F 8 41,45
Convenience opening and closing......... 53
Key replacement..........:ceeeee eens 45
Mechanical key icc 2 saunas s ave «2 emiee eee 45
Not recognized...............0 eee eae 108
PANIC button.....................0005 45
Replacing the battery.................. 47
Unlocking and locking...............005 46
Vehicle code... 2.0... 0... eee eee eee 45
Key user... 2... eee eee 39
Kick-down .. eee eee eee ee 112
L
Lane assist
refer to Lane departure warning......... 176
refer to Lane guidance.............45- 176
Lane departure warning...............-. 176
Cleaning the camera area.............. 311
Lane :qQuidanee:s « sssvise s ¢ siveine os eres ae wes 169
Laptimer’s sess « = new a ¢ eee + + neres oe nes 158
Laser lighting): ¢ sees ¢ ¢ sews se eee a e eee « 60
LaSerSeaniners » mew: + 2 meme 5 2 eeeS Xe a 151
Cleaning « « css «= sewn ee sone oo ae wo os 312
LATCH (securing child safety seats)......... 91
Leather care andcleaning............... 313
Legal information
License subscriptions................. 266
Software information...............05 266
Software licensesinis ss swcvsie « 0 sane © savers © 266
Version information.............-.00- 266
Legsupport....................000000. 75
License plate bracket................0.. 340
Lifting points (vehicle jack).............. 321
Light/rain sensor
Headlights .......... 6... cece eee eee 58
Intermittent mode (windshield wipers) .... 66
Lighting
Exterior’: = ess ss eee sy eee eo ee ee pees 58
FM GONIOR sesius ow susie 0 v aces 6 o eawaue 9 w aeneand wa 62
LIQHES « issssns so aeiwies ow mene + wan © ¥ MERITS oa 8 58
Lights on the charging port
refer to Charging display............... 135
Listening to music
referto Media................-.. 250, 253
Load... 2... eee 344
GOGALUSETS iin «a secnene « rains oo cuesems @ 2 osmeee wo « 38
Locking and unlocking
By remote control... 2.2... cece eee eee 46
Using the lock cylinder................. 44
With the convenience key............... 46
Low beam headlights.................... 58
LTE
refer to Exterior antenna.............. 212
Luggage compartment................-. 97
Power SOUrCES .... eee eee eee eee 94
Valet Parking’: s » asec: seme x : xeuu « t eae & 55
also refer to Luggage compartment...... 97
Luggage compartment lid................ $1
Closing button.............. 0000000005 49
Generalinformation...............0005 48
Mechanically unlocking...............-- 51
Opening. and Closing ecco s 0 sissies sss so 49
Opening and closing with foot motion..... 50
Opening from the inside in an emergency.. 51
Power opening and closing.............. 49
Lumbar’supports sisicn se esova 2 maces eo a 71,74
M
Maintenances. « cmos s 2 eos 9 2 aes 4 e eee 338
Maintenance intervals.................. 287
Malfunction Indicator Lamp (MIL)........ 274
Maneuver assist........-..0 0000s ee eens 207
Manually releasing the charging connector. 137
Manually releasing the charging port door.. 137
351