wheel AUDI S8 2008 Owners Manual

Table of contents
Safety first . . . . . . . . . . . . . . . . . 197 Vehicle operation . . . . . . . . 267 Vehicle care ................ 287
Driving Safely . . . . . . . . . . . . . . . . . . 198 Intel ligent technology . . . . . . . . . . 268 C leaning and protection ........ 288
General notes . . . . . . . . . . . . . . . . . . 198
Proper occupant seating positions 200
Driver and passenger s ide footwell 204
Peda l area . . . . . . . . . . . . . . . . . . . . . 204
Stow ing luggage . . . . . . . . . . . . . . . 205
Reporting Safety Defects . . . . . . . . 207
Safety belts . . . . . . . . . . . . . . . . . . . . 209
Genera l notes . . . . . . . . . . . . . . . . . . 209
Why safety belts? . . . . . . . . . . . . . . 21 O
Safety belts . . . . . . . . . . . . . . . . . . . 21 3
Safety belt pretensioners . . . . . . .
216
A irbag system .. . .. .. . . .. . . . . . . 218
Important thing s to know . . . . . . . 218
Front airbags . . . . . . . . . . . . . . . . . . 222
Monitoring the Advanced Airbag
System . . . . . . . . . . . . . . . . . . . . . . .
229
Knee airbags . . . . . . . . . . . . . . . . . . 234
Side a irbags . . . . . . . . . . . . . . . . . . . 237
Side curtain airbags (SIDEGUARD™) 240
Child Safety . . . . . . . . . . . . . . . . . . . . 243
Impor tant things to know . . . . . . . 243
Child safety seats . . . . . . . . . . . . . . 248
Instal ling a ch ild safety seat . . . . . 253
Addit ional Information . . . . . . . . . . 256
Lower anchorages and tethe r for
children (LATCH) . . . . . . . . . . . . . . . .
258
Not ice about data recorded by
vehicle contro l modules . . . . . . . . .
268
Electron ic Stab ilizat ion Program
(ESP) . . . . . . . . . . . . . . . . . . . . . . . . . .
268
Braking . . . . . . . . . . . . . . . . . . . . . . . . 270
Servotronic® -advanced power
steer ing system . . . . . . . . . . . . . . . .
273
Driv ing w it h your quattro® . . . . . . 273
Energy management . . . . . . . . . . . . 274
Driving and environment . . . . . . . 277
The first 1,000 m iles (1,500 km) and
afterwards . . . . . . . . . . . . . . . . . . . . .
277
Cata lytic converter . . . . . . . . . . . . . 278
Avoid damaging the vehicle . . . . . 279
Operate your vehicle economically
and minimize pollution . . . . . . . . . .
279
Trailer towing . . . . . . . . . . . . . . . . . . 282
Driv ing w ith a trailer . . . . . . . . . . . . 282
Trai ler towing tips . . . . . . . . . • . . . . 284
Genera l info rmation . . . . . . . . . . . . . 288
Care of exterior . . . . . . . . . . . . . . . . . 288
Care of inte rior . . . . . . . . . . . . . . . . . 295
Fuel supply and filling your fuel
tank ............................ 301
Gasoline . . . . . . . . . . . . . • . . . . . . . . . 301
Fuel tank ....................... 302
Checking and filling . . . . . . . . . . . . 306
Engine hood . . . . . . . . . . . . . . . . • . . 306
Engine compartment . . . . . . . . . . . . 308
Engine oil . . . . . . . . . . . . . . . . . . . . . . 309
Engin e cooling system . . . . . . . . . . 3 14
Brake fluid .... .... ............. 3 17
Battery . . . . . . . . . . . . . . . . . . . . . . . . 31 8
W indshield/headlight washer
container . . . . . . . . . . . . . . . . . . . . . .
323
Tires and wheels . . . . . . . . . . . . . . . 324
Tires . . . . . . . . . . . . . . . . . . . . . . . . • . . 324
Vehicle care I I irechnical data

Table of contents
Do-it-yourself service ... 347
What do I do now? . . . . . . . . . . . . . 348
Trunk escape handle . . . . . . . . . . . . 348
Emergency warning triang le . . . . . 348
Jack, tools and spare wheel . . . . . . 349
Changing a wheel . . . . . . . . . . . . . . 351
Fuses and bulbs . . . . . . . . . . . . . . . . 358
Fuses . . . . . . . . . . . . . . . . . . . • . . . . . . 358
Bu lbs . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Em ergency s ituat ions . . . . . . . . . . 36 4
Gener al . . . . . . . . . . . . . . . . . . . . . . . . 364
Sta rting by pushing or towing . . . . 364
Start ing with jumper cab les . . . . . . 364
Use of jumper cab les . . . . . . . . . . . . 365
Em erge ncy towing with commercia l
t ow truck . . . . . . . . . . . . . . . . . . . . . . 366
Lifting vehicle . . . . . . . . . . . . . . . . . . 369
Technical data
General information
373
37 4
Expla nation of technical data . . . . 374
Vehic le ident ificat ion . . . . . . . . . . . . 374 Displaying Vehic
le Identifica tion
Number in MMI . . . . . . . . . . . . . . . . 375
Weights . . . . . . . . . . . . . . . . . . . . . . . 375
Dim ensio ns . . . . . . . . . . . . . . . . . . . . 376
Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 78
350 hp, 8 -cylinder engine, with all
whee l dr ive . . . . . . . . . . . . . . . . . . . . 378
450 hp, 12-cylinder engine , wi th all
whee l drive, long wheel base . . . . 379
Consumer Information . . . . . . . . . 380
Warran ty coverages . . . . . . . . . . . . 380
Operating you r veh icle outs ide the
U.S.A. or Canada . . . . . . . . . . . . . . . 380
Audi Serv ice Repair Manuals and
Literature . . . . . . . . . . . . . . . . . . . . . . 380
Maintenance . . . . . . . . . . . . . . . . . . 380
Ad ditional accessor ies,
mod ificat ions and parts
rep lacement . . . . . . . . . . . . . . . . . . . 382
Alphabetical index . . . . . . 385

Instruments and controls
General illustration
G) Power window switches ........................ .
@ Door handle
G) Power locking switches ..... .. .... .... .... ...... .
© Adjuster contro l for ou tside mirrors ...... .... .... .
© Light switch .. ...... .... ... .... .... .... ..... .. .
© Contro l lever for:
- Cruise control .... .... ...... ....... ...... ... .
- Adaptive C ru ise Contro l .... .... .... .... .... .. .
0 Air outlets ... .. .... .... .... .... ... .... .... .... .
@ Contro l lever for:
- Turn signal and high beam ....... ... .. .... ... .
- La ne assist .. ...... ... .... .... .... ... .... ... .
© Multi function steering wheel with :
- Horn
- Driver's a irbag .. ...... ... .... .... .... .... ... .
- Shift buttons ............................... .
Button for steer ing whee l heating ........ ... .. .
@ Instrument c luster .. ... .... .... ....... .... .... . .
@ Switches for
- Windshield wiper/washer ............... ...... .
- Trip computer .... ....... .... .... .... .... ... .
@ Steering lock/ignit ion/starter switch
@ Buttons for:
- Advanced Parking System .. .... .... .... .... .. .
- Side assist ................................. .
- Po wer sunshade
@ MM I Disp lay
Controls and equip­
ment
62
53
84
69
137
139
122
73
15 1
222
168
119 12
80 38
129
170
154
78
Ins trum ents and controls
@ Buttons/Indicator l ight for :
- Electronic Stabilization Program (ESP) 268
- PASSE NGER AIR BAG OFF
- Emergency flashers . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
@ Storage tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
@ Glove compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
@ Front passe nger's airbag . . . . . . . . . . . . . . . . . . . . . . . . 222
@ Shift lever for automatic transmission . . . . . . . . . . . . . 163
@ Climate controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
@ Rear window defogger switch . . . . . . . . . . . . . . . . . . . . 124
@ Ashtray with cigarette lighter . . . . . . . . . . . . . . . . . . . . . 106
@ ISTAR T~~ STOP ~butto n . . . . . . . . . . . . . . . . . . . . . . . . . 131
@ MMI Terminal
@ Storage with cup holder . . . . . . . . . . . . . . . . . . . . . . . . . 105
@ Electromechanical parking brake . . . . . . . . . . . . . . . . . . 134
@ Data Link Connector for On Board Diagnostics (OBD Ill 27
@ Engine hood release . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
@ Adjustable s teering co lumn . . . . . . . . . . . . . . . . . . . . . . 128
@ Me mory buttons (driver's seat) . . . . . . . . . . . . . . . . . . . 94
@ Switch for
- unlocking the fuel fil ler door
- unlocking t he tr unk l id
[ i ] Tips
303
55
Operation of the Mu lt i M edia In terface (MMI) is described in a sepa ­
rate manual. •

Instruments and warning/indicator lights
M alfun cti on in the ele ctronic differential lo ck (EDL )
The ED L wor ks t oget her wi th the ABS. T he ABS wa rn ing light w ill
come on if there is a ma lfunction in the ED L
system=> page 269. See
you r au thor ized A ud i dea ler as soon as possible.
& WARNING
• If the ABS (USA models )/0 (Canada models) warning light
doe s not go out , or if it comes on while driving , the ABS system is
not working properly. The vehicle can then be stopped only with
the standard brake s (w ithout ABS ). You will not have the protec ­
tion ABS provides . Contact your Audi dealer as soon as po ssible .
• USA model s: If the BRAKE warning light , the~ warning light and
the ABS warning light come on together , the rear wheels could
lock up first under hard braking . Rear wheel lock -up can cause loss
of vehicle control and an accident . Have your vehicle repaired
immediately by your authorized Audi dealer or a qualified work ­
shop . Drive slowly and avoid sudden , hard brake applications .
• Canada models : If the brake warning light (CD), the f;. warning
light and the ABS warning light
080 come on together, the rear
wheels could lock up first under hard braking. Rear wheel lock -up
can cause loss of vehicle control and an accident . Have your
vehicle repaired immediately by your authorized Audi dealer or a qualified workshop . Drive slowly and avoid sudden, hard brake
appli cations .
•
Electromechanical parking brake
tffiE (USA models) /{®) (Canada models)
T he war nin g/in dic ator l ight mon it ors the ele ctro mech an­
ical park ing brake .
With the parking brake applied and the ignition turned on, the
wa rning/ ind icator lig ht illu min a te s. Afte r the ig nition has been
turned off, the warning/indicator light continues to i llum inate for
abo ut 30 seconds. If the parking bra ke is a pplied with the ignition turned off, the warning/indicator light i
lluminates for about 30
seco nds.
T he warnin g/ind icator lig ht wi ll go out w hen the parking brake is
r elea sed .
I f t he war ning/indic ator l ig ht fl ashes con tinuously
after applying the
par king brake, bra king force is not sufficient to p revent the vehicle
fr om rol ling u nint en tional ly . This ca n happen if the br ak es b eco me
too hot . Please note the fol lowing :
• I f the slope of the g rou nd is too steep to pa rk t he ve hicle, the
addi tiona l dr ive message a ppears
Caution: Vehicle parked too
steep.
• I n the event of a parking brake ma lfunction , the yel low ·~ symbol
appea rs in the inst rument c luster display and the driver message
Parking brake malfunction ! is d isplayed . Have t he m alfu ncti on
r epaired as soon as possib le by a q ualified Audi dealership .•
Brake system BRAKE (USA models) /(©) (Canada
models)
T he warn ing/ind icator I i ght flash es if br ake fluid level is
low, if th ere is an A BS sys tem m alfunc tion or a p arki ng
br ake malf u n ct ion.
Th e li ght illu mi nates w hen t he ignit io n i s tur ned o n. It goes out afte r
the e ngine has been started . T his indicates that the bra ke warning
li ght is fu nct ioni ng prope rly.
If the brake warning light does not light up when the engine is
cranking , there may be a malfunction in the electrical system . In this
case , contact your Audi dealer.
If the brake system warning/indicator light flashes, there is a brake
syste m malfu nct ion . B y press ing th e
I CHECK ] butto n, you ca n brin g
up a driver message which exp lains the ma lfunction in more detail
::::> p~e~ ~

If the ABS, ESP and brake force distribution fail, the ABS indicator
l ig ht ABS (USA
mod els)/ 0 (Cana da mod els) and t he ESP i nd ica tor
light
f;. come on along with the brake system ma lfunction light
BRAKE (USA m ode ls)/ (@ (C an ada model s). The mes sage Brake fault !
Drive carefully to nearest workshop appears in the instrument
cluster d isp lay and three consec utive wa rning tones
sound =>& .
& WARNING
• USA models: If the BRAKE warning light , the $';. warning light and
the ABS warning light come on together , the rear wheels could
lock up first under hard braking . Rear wheel lock-up can cause loss
of vehicle control and an accident . Ha ve your vehicle repaired
immediately by your authorized Audi dealer or a qualified work­
shop. Drive slowly and avoid sudden , hard brake applications.
• Canada model s: If the brake warning light
(CD) , the ~ warning
light and the ABS warning light
8 c ome on together , the rear
wheels could lock up first under hard braking. Rear wheel lock-up
can cau se los s of vehicle control and an accident. Have your
vehicle repaired immediately by your authorized Audi dealer or a qualified workshop. Drive slowly and avoid sudden , hard brake
applications.
• If the brake warning /indicator light does not go out after a few
seconds and the parking brake released , or lights up while you are
driving , the fluid level in the brake fluid reservoir is too low. If you
believe that it is safe to do so , pro ceed immediately at low speed
to the nearest authorized Audi dealer or qualified repair facility and have the brake system inspected .
• Always keep in mind that after several brake applications, you
will need greater pressure on the brake pedal to stop your vehicle.
Do not rely on strained brakes to respond with maximum stopping
power in critical situations . You must allow for increased braking
distances . The extra distance used up by fading brakes could lead
to an a ccident . •
Controls and equip­ ment
Instruments and warning /indicator lights

button, you can bring up a driver message which explains
the malfunction in more detail.
Stop vehicle and check brake fluid level
- Pull off the road.
- Stop the vehicle.
- Turn off the engine.
- Check the brake fluid level ::::>
page 317.
-Contact your nearest authorized repair facility if neces-
sary.
Brake fault ! Drive carefully to nearest workshop
- Drive carefully to the nearest authorized repair facility
and have the malfunction corrected
=> &.
Parking brake ! Please contact workshop
- If the warning/indicator light flashes when the vehicle is
stationary or after the ignition is turned on, check to see
if the parking brake can be released. Drive to an autho­
rized repair facility as soon as possible and have the
malfunction corrected. If the parking brake cannot be
released, contact your nearest authorized repair facility.
- If the warning/indicator light flashes while you are
driving, it is possible that the traction control or the
emergency brake has malfunctioned. It is possible that
the parking brake cannot be applied. It is also possible
that the parking brake cannot be released after it has
been applied. Drive to an authorized Audi dealer to have
the malfunction corrected.
Controls and equip­
ment
Driver information display
If the ABS, ESP and the brake force distribution fail , the ABS
warning/indicator light and the ESP warning/indicator light come
on along with the brake system malfunction warning/indicator light
=>& .
& WARNING
• Always observe the warnings in => page 299, "Engine compart­
ment", before opening the hood and checking the brake fluid.
• Driving with low brake fluid is a safety hazard. Stop the car and
get professional assistance .
• USA models: If the BRAKE warning light, the !';. warning light and
the ABS warning light come on together, the rear wheels could
lock up first under hard braking. Rear wheel lock-up can cause loss
of vehicle control and an accident. Have your vehicle repaired
immediately by your authorized Audi dealer or a qualified work­
shop. Drive slowly and avoid sudden, hard brake applications.
• Canada models: If the brake warning light ((D), the 1$ warning
light and the ABS warning light
0 come on together, the rear
wheels could lock up first under hard braking. Rear wheel lock-up can cause loss of vehicle control and an accident . Have your
vehicle repaired immediately by your authorized Audi dealer or a qualified workshop . Drive slowly and avoid sudden, hard brake
applications. •
Engine cooling system malfunction -L
A malfunction in the engine cooling system must be
repaired as soon as possible.
When the -L symbol in the display blinks, then either the
engine coolant
temperature is too high, or the coolant level
is too low. An additional driver message can also be
displayed by pressing the
[CHECK] button:
Switch off engine and check coolant level

failure. Under-inflation also reduces fue l efficiency and tire tread
life, and may affect the veh ic le's handling and stopping abi lity.
Please note that the TPMS is not a substitute for proper tire mainte­
nance, and it is the driver's responsibi lity to maintain correct tire
pressure, even if under-inflation has not reached the leve l to tr igger
illumination of the TPMS low tire pressure tellta le.
Your veh icle has a lso been equipped with a TPMS malfu nction indi­
cator to indicate when the system is not operating properly . The
TPMS malfunction indicator is combined w ith the low tire press ure
telltale . When the system detects a ma lfunction , the telltale wi ll
fl ash for approximately one minute and then remain continuously
illum inated . This sequence will continue upon subsequent vehicle
start -ups as long as the ma lfunction exists.
When the ma lfunctio n indicator is i llum inated, the system may not
be ab le to detect or signa l low tire pressure as intended . TPMS
malfunctions may occ ur for a var iety of reasons, i nclud ing the
installation of replacement or alternate tires or wheels on the
vehic le that prevent the TPMS from f unctioning proper ly . Always
check the TPMS malfunction tellta le after replac ing one or more
t ires or whee ls on yo ur ve hicle to ens ure t hat the replacement or
a lternate tires and wheels allow the T PMS to continue to function
proper ly. •
Introduction
The tire pressure monit oring system m onitors air pressure
in all four road wheels and the spare tire* while the
vehicle is movin g.
As soon as the tire pressure moni toring system se nses a signi ficant
loss of air pressure in one or severa l tires, text messages and yellow
symbo ls appear in the inst rume nt cluster d isplay to aler t t he driver .
T he
(l) warning light in the instrument c luster comes on when the
t ire is sig nificant ly underinflated
=> page 20 .
Controls and equip­
ment
Driver information di splay
The warning light U) also i lluminates in the case of a system
mal fu ncti on.
The system continuous ly receives rad io signa ls from sensors
located inside each tire .
Be aware that t ire p ressu re is also dependen t on the tempera ture of
the tire . For every
18 °F (1 O °C) increase in tire temperature, tire pres­
sure increases by about 1 .5 psi (0 .1 bar). The tire warms up wh ile the
vehicle is moving and t ire pressure rises . So you should adjust tire
pressure only when the t ires are
cold, when the temperature of the
tires is roughly the same as the ambient air temperature .
I n order to keep the tire pressure monitoring system properly cali ­
brated, tire pressure on all four tires and on the spare tire* should
be checked at regular intervals, adjusted if n ecessary and saved in
the proper setti ng (recommended
pressure) => page 44.
The tire pressure is shown on the tire pressure label. On USA vehi ­
cles, the tire pressure labe l is located on the drive r's s ide B -p ill ar. On
Canada vehicles, the tire pressure labe l is located either on the
driver's side B -pillar o r inside the fuel fi ller flap. The t ire press ure
label l ists t he recommended cold tire inflat io n pressures for t he
vehic le at its maximum capacity weight and the tires that were on
your ve hicle at the time it was manufactured . For recommended tire
pressures for normal load condit ions, please see chapter
=> page 328 .
The current temperatures and pressure of your tires can be viewed
in the M MI
=> page 43 .
& WARNING
• When the tire pre ssure monitoring system warning light i s lit ,
one or more of your tires is signifi cantly under -infl ated . You should
stop and check your tires a s soon a s po ssible , and inflate them to
the proper pre ssure a s indi cated on the vehi cle' s tire pre ssure
label
=> page 328 . Driving on a significantly under -inflated tire
ca use s the tire to o verheat and can lead to tire failure. Under -infla -
~

Driver information display
& WARNING (continued)
tion also is likely to impair the vehicle's handling and stopping
ability.
• Do not adjust tire pressure when tire temperature is excessive .
This could lead to serious tire damage and even cause the tire to
burst, with the additional danger of an accident.
W For the sake of the environment
Driving with under -inflated tires reduces fuel efficiency and tire
tread life.
[ i) Tips
• Each tire, including the spare*, should be checked monthly when
cold and set to the recommended inflation pressure as specified on
the tire pressure label
=> page 328.
• The tire pressure monitoring system helps the driver to keep an
eye on tire pressures. But the driver still has the responsibility for
maintaining the correct tire pressure .
• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambient air temperature.
• When tires are replaced, the sensors and valves should not be
detached or exchanged. Only the valve core needs to be replaced
and, if necessary, the valve and the wheel electronics replaced.
• If you should put different wheels and tires on your vehicle (e .g.
winter wheels and tires), you must be certain that the wheels and
tires are compatible with the tire pressure monitoring system .
Otherwise the system will register a malfunction and a fault
message will be displayed. For more information, contact your
authorized Audi dealer.
• Adjust the tire pressure and store the pressure in the tire pres ­
sure monitoring system to the load you are
carrying => page 328. •
Significant loss of air pressure ( )
The yellow symbol appears in the event of a significant
loss of air pressure.
Fig . 25 Display: yellow
symbol with message
Fig . 26 Display: yellow
symbol without
message
If the warning light in the instrument cluster:::::, page 20
illuminates and then the ( symbol appears in the display
:::::, fig. 25 or:::::, fig. 26, this means the tire pressure is too low
in one or several tires (including spare tire* with sensor).
Stop driving as soon as possible without endangering
yourself or other drivers on the road.
- Inspect the tire or tires.
Change the tire if
necessary:::::, page 351.

The j warning light in the instrument cluster comes on when the
tire is significantly underinflated.
In addition, the tire symbo l
) appears in the display together with
the message
Please check tire pressure => page 42, fig. 25.
Af ter a few seconds, the message disappears again:::>
page 42,
fig. 26. If you would like to show the message again, press the
!CHECK] button.
[ i] Tips
• In the case of an intentional loss of air pressure, for example,
when re-adjusting tire pressure, this has to be stored again after­
wards =>
page 44.
• Current information about tire pressures and temperatures can
be scanned in MMI =>
page 43.
• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambient a ir temperature .
• The yellow symbol disappears, when the tire pressure is
corrected and the new pressure is stored in the system=>
page 44.
• After changing a wheel you have to adjust the tire pressures on
all whee ls . In addition, you must then initialize the new tire pres­
sures in the tire pressure monitoring system =>
page 45.
• If your vehicle is equipped with a spare tire* with a wheel sensor,
the tire will be monitored and the display
symbols => page 42, fig. 25
or=>
page 42, fig. 26 will appear if the pressure is too low.•
Controls and eq uip­
ment
Driver information display
Displaying tire pressures and temperatures
The current status of the tires can be displayed in MM/.
'
!
Tire pressure monitoring
• Disp lay tire pressures ...
I
Fig . 27 MMI display :
T ire pres sure moni­
toring system
12 :QQ AM
Turn on the ignition.
Press the
I CAR I function button.
Select
Systems in the CAR menu.
Select
Tire pressure monitoring .
,. •I
Fig. 28 MMI display:
Displaying the tire
pressure
Select Display tire pressures . The tire pressures and
temperatures are displayed
~ fig. 28.
Current tire pressures are shown in green and yellow numbers. The
meaning of the colors is as follows:
~
Vehicle care I I irechnical data

Changing a wheel When you change a wheel, the new tire must be initial­
ized.
Turn on the ignition.
Press the
I CAR I function button.
- Select
Systems in the CAR menu .
- Selec t
Tire pressure monitoring .
-Select Initialize wheels ~ page 43, fig. 27.
Programming is necessary:
• After the tires have been rotated on the vehicle (including use of
the spare tire*),
• If tires with new wheel sensors are used.
All pressure warning and system malfunction indicators in the
display will be canceled.
If a wheel change has been made, it is necessary to complete the
Initialize wheels function.
Th e tire pressure monitoring system is not available dur ing the
programming process and no pressure and temperature values are
displayed on the MMI display.
After you have selected the funct ion, the new wheels are
programmed and the actual pressures are stored. This learning
phase can take up to 20 minutes driving time.•
Contro ls a nd eq uip­
ment
Driver information display
Malfunctions
A malfunction can have various causes.
Fig. 29 Display:
Syste m malfunction
If the ...., warning light in the instrument cluster flashes for approxi­
mately one minute and then remain continuously illuminated and
additional ly the
=> fig. 29 symbol appears in the display, the
tire pressure monitoring system is not available. This can have
various causes.
• If the message appears at the end of the learning process, the
system cannot recognize the wheels installed on the vehicle. This
can be because one or more wheels without a wheel sensor were
insta lled .
• A wheel sensor or other component may have failed.
• The system has detected more than 5 wheels with wheel sensors
in the vehicle, for example when carrying snow tires.
• A tire was changed but the
Initialize wheels function was not
activated
=> page 45.
• Audi replacement parts were not used.
• If snow chains are being used, system function can be compro­
mised due to the shielding properties of the chains.
• The tire pressure monitoring system may not be available
because of a radio malfunction.
Vehicle care I I irechnical data