2014 AUDI A8 sensor

220 Vehicle care and cleaning
-Wheels
-Never use any paint polish or other
abrasive materials.
- Damage to the protective layer on the
rims such as stone chips or scratches
must be repaired immediately.
- Sensors/camera lenses
- Never use warm or hot water to re-
move snow or ice from the camera
lens. This could cause the lens to crack.
- Never use abrasive cleaning materials
or alcohol to clean the camera lens.
This could cause scratches and cracks.
-Windows
- Remove snow and ice on windows and
exterior mirrors with a plastic scraper.
To avoid scratches, move the scraper only in one direction and not back and
forth.
- Never remove snow or ice from win­
dows and mirrors using warm or hot
water because this could cause cracks
to form.
- To avoid damage to the rear window
defogger, do not apply any stickers on
the heating wires on the inside of the
window.
- Decorative parts/trim
- Never use chrome care or cleaning
products.
- Paint
-To reduce the risk of scratches, the ve-
hicle must be free of dirt and dust be­
fore polishing or waxing.
- To prevent paint damage, do not polish
or wax the vehicle in direct sunlight.
- To reduce the risk of paint damage, do
not polish away rust film.
- Trim
- To reduce the risk of damage, do not
treat the trim around the panorama
sunroof with paint polish.
- Decorative decals
-To reduce the risk of damage, do not
use any rough powder or abrasive
cleaning products. - To reduce the risk of damage, do not
polish decorative parts that have a
matte finish.
-Displays
-To avoid scratches, do not use dry
cleaning methods on displays.
- Controls
- Make sure that no fluids enter the con-
trols, because this could cause dam­
age.
- Safety belts
- Do not remove the safety belts to clean
them.
- Never clean safety belts or their com­
ponents chemically or with corrosive
fluids or solvents and never allow
sharp objects to come into contact
with the safety belts. This could cause
damage to the belt webbing.
- If there is damage to the webbing, the
connections, the retractors or the buck­
les, have them replaced by an author­
ized Audi dealer or a qualified work­
shop.
- Textiles/Vinyl/Alcantara
- Never treat Vinyl/Alcantara with leath-
er care products, solvents, floor polish,
shoe polish, stain remover or similar products.
- To avoid damage, have stubborn stains
removed by an authorized Audi dealer
or a qualified workshop.
- Never use steam cleaners, brushes,
hard sponges, etc. when cleaning.
- Objects with sharp edges such as zip­
pers, rivets on clothing or belts can
cause damage to the surface.
- Open hook and loop fasteners, for ex­
ample on clothing, can damage seat
covers. Make sure hook and loop fas­
teners are closed .
-Natural leather
- Never treat leather with solvents, floor
polish, shoe polish, stain remover or
similar products.

24 0 Ch eck ing and filling
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig . 204 Eng ine compartment: cover on the coolant
expa nsion tank
Before you check anything in the engine com­
partment,
a lwa ys re ad and h eed a ll WA RN­
INGS o .A in Working in the engine compart­
ment on page 231 .
Park your vehicle on a level surface.
• Switch
off the ignition .
• Read the engine coolant leve l from the cool­
ant expansion tank
o fig. 204, o page 233.
With a cold engine, the coolant level should
be betwee n the "min" and "max" markings.
When the engine is warm, the level may be slightly above the "max" marking .
The location of the coolant expans ion tank
can be seen in the engine compartment illus ­
tration
o page 233.
To obtain an accurate reading, the engine
must be switched
off.
The expansion tank in your vehicle is equipped
with an e lectric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System
o page 16 wi ll
illuminate unti l you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level sensor, we
still recommend you check the coolant level
from time to time.
Coolant l oss
Coolant loss may indicate a le ak in the cooling
system. In the event of coolant loss, the cool- ing system shou
ld be inspected immediately
by your authorized Audi dea ler . It is not
enough mere ly to add coo lant .
In a
sea le d system, losses can occur on ly if
the boiling point of the coo lant is exceeded as
a res ult of overheating.
A WARNING
-The cooling system is under pressure and
can get very hot. Red uce the risk of scald­
i ng from hot coolant by fo llow ing these
steps.
- Turn
off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escaping flu id and steam by covering the
cap with a large, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise d irect ion while ap­
plying light, downward pressure on the
top of the cap.
- To avo id being burned, do not sp ill anti­
freeze or coolant on the exhaust system
or hot engine parts. Under certa in cond i­
tions, the ethylene glycol in engine cool­
ant can catch fire.
0 Note
Do not add any type of radiator leak seal­
ant to your veh icle's engine coolant . Add­
i ng radiator repa ir fluid may adverse ly af­
fect the funct io n and performance of your
cooling system and could result in damage not covered by your New Vehicle Limited
Warranty.
Adding coolant
Be very careful when adding engine coolant .
Before you check anyth ing in the eng ine com­
partment,
alw ay s re ad and h eed all WARN­
IN GS o .A in Working in the engine compart­
ment on page 231.
• Tu rnoff the engi ne.
• Let the eng ine cool down.

remain continuously illuminated. This se­
quence will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
When the malfunction indicator is illuminat­
ed, the system may not be able to detect or
signal low tire pressure as intend ed . TPMS
malfunctions may occur for a variety of rea­
sons, including the installation of replace­
ment or alternate tires or wheels on the vehi­
cle that prevent the TPMS from functioning
properly . Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the re­
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
Tire pressure indicator appears
Applies to vehicles: with tire pressure monitoring system
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too
low or if there is a system malfunction.
Fig. 213 Display : underi nflatio n warning
Fig. 214 Di splay: Syste m mal functio n
Using the ABS sensors, the tire pressure moni­
toring system compares the tire tread circum­
ference and vibration ch arac teristics of the in­
dividual tires. If the pressure decreases in one
or more tires, this is indicated in the instru-
Tires and wheels 267
ment cluster with a warning symbol [I] and a
message
r::!) fig. 213.
The tire pressure monitoring system must be
reset via MMI each time the pressures are ad ­
justed (e.g. when switching between partial
and full load pressure) or after changing or re­
placing a tire on your vehicle
r::!) pag e 268. The
TPMS indicator only monitors the tire pres­
sure that you have previously stored. You can
find the recommended tire pressures for your
vehicle on the label on driver's side 8-pillar
<=:>page 252 .
Tire tread circumference and vibration charac­
teristics can change and cause a tire pressure
warning if:
- the tire pressure in one or more tires is too
low,
- the tire has structural damage,
- the tire pressure was changed, wheels rotat-
ed or replaced but the TPMS was not reset
r::!) page 268 .
Warning symbols
[I] Loss of pressure in at least one tire q &..
Check the tire or tires and replace or repair if
necessary. The indicator light
[I] in the instru­
ment cluster also illuminates
¢page 11.
Check/correct the pressures of all four tires
and reset TPMS via MMI.
i:mJ) (Tire Pressure Monitoring System) Tire
pressure! System malfunction .
If@m appears after switching the ignition on
or while driving
q fig. 214 and the indicator
light
[I] in the instrument cluster blinks for
approximately one minute and then stays on,
there is a system malfunction .
Attempt to store the correct tire pressure
¢ page 268. If the indicator light does not
turn off or if it turns on shortly thereafter, im­
mediately drive your vehicle to an authorized
Audi dealer or authorized repair facility to
have the malfunction corrected .

Fuse pa nel @ (brown )
No . Equipment
1 Headlight contro
l switch
2 Emergency
start coil (key
i dentification)
3 Rear door
control module
(driver's side)
5 Horn
6 Interior
lights (headliner)
Steer ing column leve r, mul-
8
tifunction steering wheel
controls, steering wheel
heating
10 E
lectric steering column
l ock
11 Driver door
control module
12 D
iagnostic connector, light/
rain sensor
14 Powe
r steering column ad-
justment
15 Power steering, A/C com-
presser
16 Brake booster
Fu se p anel © (black )
No. Equipment
1 Front seat heating
2 Windshield
wiper
3 Front exte rior lighting
4 Sun roof
5 D river power window
6 Driver
seat (pneumatic)
7 Pano ramic sunroof
8 Dynamic
steering
9 Front exterior lighting
10 W
indshield/headlight wash-
er system
11 Rear power
window (driver's
side)
12 Panoramic sunroof
Amp s
5
5
7,5 15
7,5
10/5
5
7,5
10
25
20 15
Amp s
30
30 30
20
30
7,5 20
35
30
35
30
40
Fu ses and bulb s 2 79
Front passenger side cockpit fuse
assignment
Fig . 231 Front passenger side cockpit: f use pane l with
plast ic bracket
Fu se panel @ (bl ac k)
No. Equipment Amps
1 Anti-theft alarm system 5
2 Transmission control
mod-
15
ule
3 Front climate control fan
40
4 Engine supply 35
6 Engine cont ro l modu le 5
7 Front
passenger door con-
7,5
trol module
8
Front passenger power win-
30
dow
9 E5C contro l module 10
10 ESC
contro l modu le
25
1 1 Right rear power window 30
1 2 Front
passenger seat (pneu-
7,5
matics)
•
•

280 Fuses and bulbs
Luggage compartment fuse assignment
Fig. 23 2 Luggage compartment: fuse pa nel with plas tic bracket
Fuse panel @ (black )
No. Equipment Amps
No. Equipment Amps
11 Dynam ic steer ing 5
E SC button, da ta logger, di· 12
Selector lever,
BCM-2
5
1 agnostic connector, BCM · 1,
5 13 Audi s ide ass ist 5
adap tive light ing system
14 Engine control modu le
5
2 Networking gateway
5
15 Sta rter 40
3 adap tive air s usp ension 5
4 Parking system
5 16 Left headlight/Headlight
10/5
range control system
5 Steering colum n leve r 5
6
Suspension contro l system
5
sensor
Fu se panel @ (red)
No. Equipment Amps
7 Bel
t tensione rs, airbag con-
5
trol module
Heated washe r fl uid no zzles, 1
Left reversible be
lt tens ioner
2S
2 Right revers
ible belt ten -
25
sioner
H ome link (garage door
Starter diagnos is, DC/DC
8 opener), nig ht vision system 5
3 co
nverter (S tart-Stop-Sys·
5
con trol mod ule, sport diffe r-
tern)
ent ia l, ionizer
9
Electromechan ica l park ing
5
brake contro l modu le 4
DC/DC converter (Start-
7,5
Stop-System)
5 Image proce ssing 7,5
10 Rear seat heating, coo
ler, in·
5
terior rearview mirror

Fuses and bulb s 281
No . Equ ipment Amps Fus
e pan el@ (bla ck)
•
6 R
ight headlight (headlight
10
with adaptive light)
7 ESC control module 5 No. Equipment Amps
1 Automatic luggage com
-
5
partment lid
•
8
Sound actuator, AEM control
7,5
module 3 Rear
sockets 20
5 adaptive air suspension
15
9 Adaptive cruise control 10
6 115-Vsocket 25
10 Transmiss
ion control mod-
5
ule 7 E
lectromechanical parking
30
brake
11 Climate control
system sen-
5
8 Rear seat heating 25
sors
9 Rear exterior lighting 20
Fuse pan el© (bro w n)
No. Equipment Amps
10 Rear climate control system
20
blower
1 E
lectromechanical parking
5
brake
2 Suspension control system
5 Rear
sun shade, closing aid,
11 luggage
compartment lock,
20
convenience key, fue l filler
door
sensor
3 Right rear door
control mod-
7,5
ule 12
Luggage compartment
lid
30
control module
4 Smart modul tank 5
Fuse panel ® (red)
5 Front
climate control system
15
contro ls
6 Rear climate control
system
10
controls N o. Eq uipm ent Amps
1 Rear
seat adjustment but-
5
tons
3 Left rear seat (pneumatics) 7,5
7 Networking gateway 5
5 Tra
iler hitch control module* 20
8 Cooler
15
6 Left rear seat 30
9
Interface for specia l func-
5
tions 7 Right rear seat
30
8 Trailer hitch contro l module*
20
10 Cell phone
adapter, Blue-
5
tooth handset
9 T ra iler hitch control modu le* 15
11 AEM control modu le 15 10
Right rear
seat (pneumatics) 7,5
12 Selector lever 10
Fuse pan el® (bro wn)
13 Ambient lighting
10 No. Equipment Amps
14 Rear exterior lighting 20
15 Fuel
pump
25 1 Start-Stop-System,
Radio re-
30
ceiver/sound amplifier
16 Electromechanical parking
30
brake 2 Sound amplifie
r 30
Start-Stop-System, Rear
3 Seat
Entertainment, radio 7,5
receiver/sound amplifier
5 Automatic dimming interior
5
rearview mirror
6 DVD changer 5

A
A/C (automatic climate control) . ... .. .. 80
ABS
refer to Anti-lock braking system .. .. . 199
Accessories .. ............. .... .. ... 294
Adapt ive a ir s uspension/sport .. .. .. .. . 110
Adapt ive cruise control ......... .... ... 94
C leaning the sensor .......... .... .. 217
M essages .. ............. .... .. ... 10 1
Request for drive r in terven tion .. .. .. .. 99
S top-and-go traffic ....... .. .. .. .. .. 98
Adapt ive Lig ht (defect ive) .... ... . ... .. 22
AdBlue . ... .. .. .. .. .. .... ... .. .. ... 227
F il ling . .. .. .. ............. .. .. ... 229
Messages in the instrument cluster dis-
p lay ... .. .. ................. .. ... 228
Adding Engine coolant . ... .... ... .. .. .. ... 240
Eng ine oi l .. ............. .... .. .. . 237
W indshield washer fluid . .. .. .. .. .. . 247
Add it ives
Eng ine oil . ..... ...... ... .. .. .. ... 237
Adjustab le steer ing column .. .. .. .. .. .. 83
Ad justing
A ir distribution (automatic climate con-
trol) . .. .. .. .. ........ ... .. ... ... .. 81
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 58
Instrument illum inat ion .... ... ... ... 51
Steer ing colum n .......... .. .. .. .. .. 83
Temperatu re (automat ic climate co ntrol) 8 1
Airbag system . . . . . . . . . . . . . . . . . 153 , 172
Advanced A irbag System ....... . ... . 157
Advanced Airbag System components . 160
Ca re . .. .. .. .. .. ........... .. .. ... 166
C hildr en . .. ............. .... .. ... 178
Ch ild restra ints ........... .... .. .. . 179
Components (front airbags) . ... .. ... 160
Danger of fitting a child seat on the front
passenger seat . . . . . . . . . . . . . . . . . . . . 155
Disposal . .. .. ........... .. .. .. ... 166
Front airbags . . . . . . . . . . . . . . . . 157, 158
H ow do the front airbags work? . ..... 162
H ow many airbags does my vehicle
h ave? ... .. .. ........ ... .. ... ... . 160
H ow the Advan ced Airbag Sys tem com-
ponents wor k toge ther .... .. .. .. .. . 16 1
Inde x 297
Important sa fety inst ruct ions on the
knee airbag system .. ... .... ... .. .. 170
Important t hings to know .... ... .. .. 153
Knee a irbags . .. .. ................. 168
Monitoring .. .. .. .... ............. 164
PASSENGER AIR BAG OFF light ....... 164
Repa irs ... .. .. .. .. . .. .... .... .. .. 166
Safety instr uctions .. .............. . 166
S ide a irbags . .. .. .. . .............. 171
S ide cur tain airbags ............ .. .. 17 4
Warning/ind icator lights ..... ... .. .. . 18
Wa rning/Indicato r lights .... ... .. .. 164
Weight -sensing mat . ... .... ... .. .. 178
When must the system be inspected? 164
A ircraft
T ranspo rting yo ur vehicle
Alcanta ra 2
87
Cleaning ........ .. ............... 219
A ll Wheel Drive .. .. .... ............. 204
Winter tires . .. .. .. ............... 263
Alternator
refer to Gene rator . .. .. ..... ... .. .. . 16
Amb ience light ing ... ... ..... ... .... . SO
Anti-freeze
refer to Eng ine coolant ............. 239
Anti -lock b raking system . ..... ... .. .. 199
Warning/indicator lights . . . . . . . . . 18, 19
Ant i-s lip regu lation .... ......... .. .. 199
W arning/ind icator lights ........ .. .. . 18
Anti-theft systems Electronic immob ilizer ............. .. 32
ASR
refer to Anti-slip regulation 199
Audi braking gu ard
refer to Braking gua rd .. ..... ... .. .. . 94
Audi drive selec t
refer to Drive se lect . .............. . 110
Audi Serv ice Repair Manuals and Litera-
ture ..... .. .. .. .. .. ............... 292
A UTO
Automatic climate contro l .... ... .. .. . 80
A utomat ic head lights ....... ... .. .. . 46
A uto Lock .. .. .. .. ................. . 33
Automat ic be lt retractor ............. 148
Automatic climate control Air vents . ... .... .. . .. .. ..... ... .. . 81
Automat ic recirc ulation ............. . 82
•
•

Engine compartment .... ... .. .. .. .. . 233
C losing the hood . ..... ... .. .. .. .. . 232
Opening the hood ....... ... .. .. .. . 231
Safety instructions ........ .. .. .. .. . 231
Working in the engine compartment . . 231
E ng ine coolant ... .. .... ... .. .. .. ... 239
Adding coolant . ... .... ... .. .. .. ... 240
Chec king the eng ine coolant leve l .. .. . 240
Expansion tank ........... .... .. ... 240
Malfunct ion symbo l ....... .. .. .. .. .. 16
Radiator fan ................ .... .. 241
Temperature ga uge ....... .. .. .. .. .. 1 0
Engine oil ... .. .... .... ... .. .. .. ... 234
Adding .. .. ............. .... .. .. . 237
Addit ives . .. .. ........... .. .. .. ... 237
Changing ................ ... ... .. 238
Checking oil level ............. ... .. 237
Checking the eng ine o il level .. .. . ... . 236
Consumpt ion ............ .... .. .. . 237
I ndications and cond it io ns requ iring ex-
tra checking ............. .. .. .. .. . 236
I ndica tor light . . . . . . . . . . . . . . . . . . . . . 1 7
Oi l cons umption .. ..... ... .. .. .. ... 236
O il grades .. .. ........... .. .. .. ... 234
Pressure malfunction ...... .. .. .. .. .. 17
Recommended oil check intervals .. .. . 236
Sensor defective . . . . . . . . . . . . . . . . . . . . 21
Specification and viscos ity ... ... ... .. 234
Engine sound . ... .. .... ... .. .. .... . 110
E ng ine speed limitat io n ..... .. .. .. .. .. 2 1
Eng ine start-stop mode
refer to Sta rt-Stop-System ..... . ... .. 90
Entry assistance . . . . . . . . . . . . . . . . . . . . . 64
E nv iro nment
Brea k-in period ........... .. .. .. ... 20 7
Cata lytic conver ter ..... ... .. .. .. .. . 208
Diese l partic ulate fi lter . ... .. .. .. .. . 208
Disposing of yo ur vehicle batte ry . .... 246
Driving at h igh speeds ..... .. .. .. .. . 210
Driving to m inimi ze pollution and no ise 209
Fue l ..... .. .. ............. .. .. ... 225
Fuel economy ............. ... ... .. 209
L eaks under your veh icle .... ... ... .. 23 1
L ett ing the ve hicle stand and wa rm up . 210
P rope r disposal of dra ined brake flu id . 24 2
Inde x 301
Proper disposal of d rained eng ine cool -
ant . ... .. .. .. .... . ... ...... ... .. 240
Proper disposal of drained eng ine
o il . . . . . . . . . . . . . . . . . . . . . . . . . 237,238
Recycling used engine oil ............ 23 7
U nleaded fuel .. ... ................ 222
What should I do with an o ld battery? . 246
EPC
refer to Electron ic power control (EPC) . 20
ESC
refer to E le ct ron ic Stabilization Control
(ESC) ... .. .. .... .. . .. .. ..... ... .. 199
E vent Data Recorde r (ED R) ........ .. .. 199
Exhaust tail pipes Cleaning .. .. .. .. ............... .. 218
Expansion tank . ..... . .. .. ..... ... .. 240
Exterior lighting .... ................. 46
Exterior mirrors Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . S5
Dimming .. .. .. .... ... ....... ...... 56
Heating ..... .. .... ... ....... ...... 55
Exterior temperat ure display ... ... .. .. . 24
F
Fastening
Booster seats ...... . .. .. ..... ... .. 185
Convertib le child sa fety seats . ... .. .. 184
Infant seats . . . . . . . . . . . . . . . . . . . . . . 183
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . 141
Fo ld ing table ...... .. ................ 69
Foot peda ls . . . . . . . . . . . . . . . . . . . . . . . . 140
Fo r th e sake of the envi ronment
Gasoline fumes and the env ironme nt .. 2 25
Red ucing engine noise by early upshift -
ing .. ... .. .. .... .. . .. .. ..... ... .. . 10
Ref uelling ... .... .. . .. .. ..... ... .. 225
Saving f uel by early upsh ifting ..... .. . 10
Fo ur zone a utoma tic cl im ate cont rol .. .. . 80
Front airbags Desc ription ...... .. ............... 157
How they work ... .. ... ....... .... . 162
Frontal coll is ions and the laws of physics 146
Fron t passenger seat a djustment . . . . . . . 64
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 58
Adjust ing . .. .. .... .......... ..... 137
Child rest raints in the front seat .. .. .. 155
•
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