AUDI S8 2008 Owners Manual

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App lies to veh ic les: w it h 12-cy linder eng ine and a ll whee l dr ive, lon g wheel base (LW B)
450 hp, 12-cylinder engine, with all wheel drive, long wheel base
En gin e data
Maximum output SAE net
Maximum torque SAE net
No. of cy linders
Displacement
Stroke Bore
Compression ratio Fuel
Dim ension s (appro x.)
Lengt h (wi th lice nce p late bracket)
Width (ac ross mirrors)
Height (unloaded)
Turning circle diameter (curb to cu rb)
Ca pac itie s (a pprox.>
Fuel tank
-Total capac ity
-Reserve (of total capacity)
Windshield and headlight washer fluid container
Engine oil
with fi lte r change hp@rpm
lb-ft@ rpm
CID (cm
3l
in (mm)
in (mm) 450@ 6200
428 @ 4000-4700
12 cy linder
366 (5998)
3 .55 (90 .2)
3 .3 1 (84 .0)
1 1.0 : 1
Premium unleaded (91 AKI! Recommended for maximum engine performance . Fur ­
t her
de tails => page 301, "Gasoline"
i n ( mm)
in (mm)
in (mm)
ft. (ml 20
4.4 (5192)
79.8 (2028)
57 .3 (1455)
41.7 (12 .7)
gal (liters)
gal (liters)
quarts (liters)
quarts (liters ) 2
3 .8 (90 .0)
2 .4 (9 .0)
5.1 ( 4.8)
13 .2 (1 2 .5)
•
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

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Consumer Information
Warranty coverages
Yo ur Au di i s cov ered b y the foll owing war ra ntie s:
• New Vehicle Limited Warranty
• Limited Warranty Against Corrosion Perforation
• Emissions Control System Warranty
• Emissions Performance Warranty
• California Emissions Control Warranty (USA vehicles only)
• California Emissions Performance Warranty (USA vehicles only)
Detailed information rega rding your warrant ies can be found in
your
W arr anty & Maint enan ce booklet .•
Operating your vehicle outside the
U.S.A. or Canada
Government regu lations in the United States and Canada require
t hat auto mobiles meet specif ic em ission regulations and safety
standards . Therefore, vehic les bui lt for the U .S .A . and Canada differ
from vehicles sold in ot her countries .
If you plan to take your vehic le outside the continental limits of the
United States or Canada, there is the possibi lity that
• unleaded fue ls for vehicles w ith cata lyt ic converter may not be
available;
• f uel m ay have a considerably lower octane rat ing . Improper fuel
may cause engine damage;
• service may be inadequate due to lack of proper service fac ilities,
tools or testing equipment;
• replacement parts may not be readi ly avai lable . •
Navigation systems for vehicles built for the U.S.A . and Canada
wil l not necessarily work in Europe, and may not work in other coun ­
tries outs ide North Amer ica.
0 Note
Aud i cann ot be responsible for mec hanica l damage that could
result from inadequate fuel, service or parts avai lability .•
Audi Service Repair Manuals and
Literature
Audi Officia l Factory Service Manuals ar e pub lished as soon as
possible after model introduction . Service manua ls a re availab le
from :
Audi Technical Literature Ordering Center
Call tol l-free:
Tel. : 1 (800) 544-802 1
(from 8 :00 AM to 8 :00 PM, EST, Monday through Friday)
or access their webs ite
www .audi .dd sltd .com on the Internet to
order repair manua ls and ot her Audi literature .•
Maintenance
General
You r ve hicle has been des igned to help keep mainte nance requ ire ­
ments to a minimum. However, a certain amount of regu lar mainte ­
n ance is sti ll necessary to assure yo ur veh ic le's safety, economy and
.,,.

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re liabi lity . For detailed vehicle maintenance consult your Warranty &
Maintenance book le t.
Und er diff icult oper ating conditi ons, for example at extreme ly low
outside temperatures, in very dusty regions, when towing a trailer
very frequently, etc ., some serv ice work shou ld be performed
between the intervals specified. This applies particu lar ly to :
• oil changes, and
• cleaning or replacing the air filter.
c£> For the sake of the environment
By regularly maintaining your vehicle, you help make sure that emis ­
sion s tandards are maintained, thus minimizing adverse e ffec ts on
the environment. •
Important considerations for you and your
vehicle
The increasing use of electronics, sophisticated fue l injection and
emission contro l systems, and the genera lly increasing techn ica l
complexity of today's automobiles, have steadily reduced the scope
of maintenance and repairs which can be carr ied out by veh ic le
owners.
Also , safet y and env ironmental concerns p lace very strict
l im its on the nature of repairs a nd adjustmen ts t o engine and trans ­
mission parts which an owner can perform.
Maintenance, adjustments and repairs usually require special tools,
testing devices and other equipment availab le to spec ia lly trained
workshop personne l in order to assure proper performance, reli ­
abil ity and sa fety of the vehicle a nd its many systems.
I mproper maintenance, adjustments and repairs can impair the
operat ion a nd rel iabil ity of your vehicle and even vo id your vehicle
warranty. Therefore , proof of servicing in accordance with the main ­
t enance sched ule may be a cond ition fo r uphold ing a p ossi ble
warranty claim made within the warranty period.
Controls and equip­ ment Safety first Vehicle operation
Above all, operational safety can be adverse
ly affected, creating
unnecessary risks for you a nd yo ur passengers .
If in doubt about any servicing, have it done by your authorized Audi
dea ler or any other properly equipped and qualified workshop. We
strongly urge you to give your authorized Audi dea ler the opportu ­
nity to perform all scheduled maintenance and necessary repairs.
Your dealer has the fac ilities, origina l parts and trained spec ialists
to keep your vehic le running proper ly.
P e rforming limited maintenan ce yourself
The following pages describe a limited number of procedures which
ca n be performed on your vehicle with ord inary tools, should the
need arise and trained personne l be unavailab le. Before performing
any of these procedures, a lways t hor oughly read all o f the app li­
cable text and carefu lly fo llow the instruct ions given. Always rigor ­
ously observe t he
WARNINGS provided .
Before you che ck anything in the engine comp artment , alwa ys re ad
and heed all
WARNING S=> & and => & in "Working in the engine
compartment" on
page 307.
& WARNING
• Serious personal injury may occur a s a result of imprope rly
performed maintenance , adju stments or repair s.
• Always be e xtremely careful when working on the vehi cle .
Always follow commonly accepted safety practice s and general
c ommon sen se . Ne ver risk per sonal injur y.
• Do not attempt any of the maintenance , checks or repairs
de scribed on the following pages if you are not fully familiar with
these or other pro cedures with re spe ct to the vehicle , or are uncer ­
tain how to pro ceed .
• Do not do any work without the proper tools and equipment.
Have the ne ce ssary work done by your authorized Audi dealer or
another properly equipped and qualified workshop .
~
Vehicle care Do-it-yourself service Technical data

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&, WARNING (continued )
• The engine compartment of any motor vehicle is a potentially
hazardous area . Never reach into the area around or touch the
radiator fan . It is temperature controlled and can switch on
suddenly -even when the engine is off and the ignition key has
been removed . The radiator fan switches on automatically when
the coolant reaches a certain temperature and will continue to run until the coolant temperature drops .
• Always remove the ignition key before anyone gets under the
vehi cle .
• Always support your vehicle with safety stands if it is neces­
sary to work underneath the vehicle . The jack suppl ied with the
vehicle is not adequate for this purpose and could collapse causing serious personal injury .
• If you must work underneath the vehicle with the wheels on
the ground , always make sure the vehicle is on level ground , that
the wheels are always securely blocked and that the engine
cannot be started .
• Always make sure the transmission selector lever (automatic
transmission) is in
"P " (Park position ) and the park brake is firmly
applied.
W For the sake of the environment
• Cha ng ing the eng in e sett ings will adverse ly aff ect em iss ion
levels . This is detrimenta l to the environment and increases fuel
c o nsu mp tion .
• Always observe environmenta l regu lations when disposing of
o ld eng ine oil, u sed b ra ke flu id, d irty e ng in e coo la nt, spe nt batter ies
or worn out tires.
• Undeployed airba g modul es and pret ensioners might be classi ­
fied as Perchlorate Material -special handling may apply, see
www .dtsc.ca .gov/ haza rdouswast e/p erc hlor ate . W hen the vehicle or
parts of the restraint s ystem including airbag modules safety be lts
w it h p ret en sio ner s are scra p pe d, a ll ap pl icable l aw s and reg ula- tions must be observed
. Your authorized Audi dea ler is familiar with
th ese re q ui re me nts a nd we reco mmend th at you h ave your dea le r
perform this serv ice for you .•
Additional accessories,
modifications and parts replacement
Additional accessories and parts
replacement
Always consult an author ized Audi dealer before
pu rcha sing a ccess ories .
Your vehicle incorporates the latest safety design featu res ensuring
a high sta nd ard of ac tive a nd pass iv e sa fet y.
T his sa fety could be compromised by non -approved chang es to th e
veh ic le . Fo r th is reason, if pa rts have to be replaced, please o bse rve
the followi ng po ints wh en insta lling addi tio na l acc essor ies:
A pprove d Audi accesso ries and genuine A udi parts are avai lable
fr om autho rized Aud i d eale rs.
T hese deale rs also have the necessary fac ilities, tools and tra ined
spec ial is ts to ins tal l the part s and accesso rie s prope rly.
L1}. WARNING
Using the wrong spare parts or using non -approved accessories
can cause serious personal injury.
• Use only accessories expressly approved by Audi and genuine
Audi spare parts
• These parts and accessories have been specially designed to
be used on your vehicle .
• Never install accessories such as telephone cradles or
beverage holders on airbag covers or within the airbag deploy-

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& W AR NIN G (c ontinu ed )
ment zones. Do ing so will in cre ase the risk of injur y if airb ags are
t rig gered in an accident!
• Before you che ck anyth ing in the engine comp artme nt, a lways
re ad and heed all WARNIN GS
=> page 29 9.
0 Note
• If items other tha n ge nuine Audi spare parts, add -on equ ipment
and accessory items are used or if repair work is not performed
according to specif ied methods, this can resu lt in severe damage to
your vehicle 's engine and body (such as corrosion) and adverse ly
affect your vehicle's warranty.
• T he innovative a luminium concept of your Audi A8 means that all
servicing, repa irs or other work on the veh icle body mus t be carried
out exc lusively by an Audi wo rkshop.
• I f emergency repairs must be performed e lsewhere, have the
vehic le examined by an authorized Audi dealer as soon as possible.
• T he manufacturer cannot be he ld liable for damage which occurs
due to fai lure to comply with these stipu lations. •
Technical Modifications
Our guidelines must be complied with when technical
modifications are made.
A lways c onsult an authorized Audi dealer before starting work on
any modifications .
T his will he lp ensure that vehicle function, performance and safety
are no t
impaired =>& .
Attempting to work on electronic components and the software
used with them can ca use malfunct io ns. Because o f the way elec ­
tronic components are interconnected with each other , such
malfunctions can also have an adverse affect on other systems that
Controls and equip­ ment Safety first Vehicle operation
are not directly involved
. This means that you risk both a substantial
reduction in the operational safety of your vehicle and an increased
wear of vehicle par ts
=> & .
Authorized Audi dealers wi ll perform this work in a professional and
competent manner or, in special cases, refer you to a pro fess ional
company that specializes in such modificat ions.
& WARNING
Improp er repair s and modifi cation s ca n change the way vehicle
s y stem s wor k and cause seriou s per son al injury.
0 Note
If emergency repairs must be perfor med e lsewhere, have t he
vehic le examined by an authorized Audi dea ler as soon as
possible .•
Vehicle care Do-it-yourself service Technical data

Alphabetical index

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A
Accessories . . . . . . . . . . . . . . . . . . . . . . . . 382
Adaptive Air Suspension ....... .. .... 185
automatic mode .. .... .... .... ... 186
Description ... .... .... .......... 185
dynamic mode ................... 186
Jacking mode when changing a flat tire .
188
lift mode . . . . . . . . . . . . . . . . . . . . . . . . 186
Setting the driving modes .. .... ... 188
Sport Chassis Controls . . . . . . . . . . . . 187
standard mode ... .... .... ...... . 186
Trailer towing mode ... .... .... ... 189
Warning/indicator lights .. ... ... 20, 21
Adaptive Cruise Control .............. 139
Changing speed ...... .... ...... . 142
Driver information ............... 144
Drivingintraffic .. .... .... ...... . 140
Error messages . . . . . . . . . . . . . . . . . . 147
Open road . . . . . . . . . . . . . . . . . . . . . . 140
Override ........ ... .. ...... .... . 140
Request for driver to assume control 140
Save speed . . . . . . . . . . . . . . . . . . . . . . 141
Setting distance . . . . . . . . . . . . . . . . . 143
Setting time interval . ... .. .... .... 143
Settings . . . . . . . . . . . . . . . . . . . . . . . . 148
Specia l driving situations . ....... . 149
Status messages ................. 147
Switching on and off ... .. .... ... . 141
System limits ...... .... .... ... ... 149
T emporarily turning off ....... .... 142
warning/indicator lights ... .... .... 145 Adaptive
Light .......... .... .... .... . 72
defective ......................... 36
Adding Engine coolant ................... 316
Engine oil . .... .... .... ... .... ... 312
Windshield washer fluid .... .... ... 323
Additiona l accessories .......... ..... 382
Additives Engine oil ... .. ...... ....... ..... 312
Adjustable steering co lumn .. .... .... 128
Adjusting Front seats . . . . . . . . . . . . . . . . . . . . . . . 86
Instrument cluster i llumination ...... 15
Steering column ................. 128
Advanced Key ....................... 59
Driver's messages . . . . . . . . . . . . . . . . 133
Locking the vehicle .. ...... .... .... 60
START button ................... 131
Starting the engine ............... 131
STOP button . . . . . . . . . . . . . . . . . . . . . 132
Stopp ing the engine ......... ..... 132
Switching on the ignition .......... 131
Unlocking the vehicle . .......... ... 60
Advanced Parking System with rear view
camera
Adjusting the chimes -option 1 .... 180
Adjusting the chimes - option 2 .... 181
front and back with visual display and
r ear-view camera . . . . . . . . . . . . . . . 170
General information ... .... ....... 170
Not es on distance information ..... 179
Parking next to obstac les . . . . . . . . . . 178
Rear -view camera -parking mode 1 . 175 Rear-view
camera -parking mode 2 . 176
Rear-view camera (Rear View) ...... 173
Rear-view camera coverage area .... 174
Rear-view camera tips ............ 183
Specia l parking situations .. .... ... 178
Switching the rear-view camera on and
off .. .... .... ...... ... .. .... ... 182
switching the visua l display on and off ..
182
System error message ............ 183
Towing hitch ...... .... ...... .... 180
Air conditioning
See Cl imate controls .... ... .... ... 114
Airbag system .... .... .... ...... 218, 238
Advanced Airbag System ...... .... 222
Advanced Airbag System components ...
225
Care ............................ 232
Child restraints ................ .. 245
Children ... .... .... ... ........ .. 244
Components (front airbags) . ...... . 225
Dang er of fitting a child seat on the front
passenger seat .. ....... .. .... .. 220
Disposal . ...... ..... .. .... .... .. 232
Fron t airbags ...... .... .... .. 222, 223
How do the front airbags work? . ... 227
How many airbags does my vehicle have?
225
How the Advanced Airbag System compo -
nents work together ... .... ...... 226
Impor tant safety instructions on the knee
airbag system .................. 236
Impor tant things to know .. .... .... 218
Indicat or light ........ ........... 229

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Kne e airbags ...... ... .. .... ..... 234 ASR
Moni to ring .. ... .... .... ....... .. 229 How the Anti-S lip Regu la tion Sys tem
PASSENGER AIR BAG OFF ligh t .... . 230 works ...... ... .... .... .... .... 270
Repairs ........ .... .... ......... 232
Safety instructions ... .... ... .... . 231
Side airbags ... .. .... .... ... .... . 237
Side curtain air bags (SIDEGUARD) .. 240
Warning/indicator lights ...... .... .. 19
Weight -sens ing mat ...... ... .... . 2 44
When mu st the syst em be insp ected?
229
Aircra ft
T ransporting your v ehicle .. ........ 369
All W hee l Dr ive ...... .... ... .... .... 273
Alloy whee ls ... .... .... .... ... .... .. 293
A ll-whee l drive
W int er tir es . ..... .... ... ... . .... . 34 1
A lternator
See Ge ne ra tor . ....... ... .... .... . 18
An ti-free ze
See Engine coolan t ..... .... .... .. 314
An ti- lock brak e system
How th e ABS syst em works ....... . 272
Wa rning /indi cato r ligh ts .. .. .. .... .. 21
Anti -Sl ip Reg ulat io n System (ASR)
H ow the system works .... .... .... 270
Anti -theft systems
Anti -theft alarm system .. ... .... ... 61
E lectron ic immob ilizer . .... .... .... 49
Ashtray Fron t .. .... ... .. .... ...... .... .. 106 Aud
i Service Repa ir Manua ls and Literatu re
380
A UTO mode
AC climate con tro l .. .. .... .... .... 117
Auto Safety Hotline .... .... .... ... .. . 207
A ut o-C heck Con trol ...... .... ... .... .. 28
Automatic belt retracto r ... .. .... .... . 213
Automati c car wash
See Washing . .............. .... .. 289
A ut om atic Sh ift Loc k (ASU . ...... .... . 165
Automat ic transmission
6 -speed automat ic t rans missio n .... 163
Auto matic S hift Lock (ASU .... .... . 165
Dr iving . ...... .... .... .... .... ... 163
Dynamic sh ift p rogram .. ...... .... 166
Em ergency release fo r selecto r leve r 168
F a il- safe mode . ...... .... .... .... 168
I gnition key s afety lock . ...... .... . 130
K ick -down .... .... .... .... ... .... 166
Manual sh ift program ....... .... .. 167
S ele ctor le ve r ... ........... .... .. 164
Shift buttons ... .... .... .... .... . 168
S teering wheel w ith tiptronic . ...... 168
Average speed . ...... .... .... .... ... . 38
Avo id damaging the ve hicle .. ...... ... 279
B
Rear . ...... .. ...... .... ......... 107 Background lighting . ...... .... ... .. .. 76 Ba
ttery .... ... .. .... .... ...... .... . 318
Ba ttery location ins ide the luggage
compa rtmen t ... .... ... .... .... . 319
Chargi ng .. .... .... ... .... .... ... 321
Impo rtant wa rnings when working on the
battery .. .... .... ... .... ...... . 319
low ...... .... .... .... ... .... .... 274
Replaci ng t he battery .. ... .... ... . 3 22
State of cha rge . ...... .... .... ... . 27 4
Winter operat ion ..... .... .... .. . . 318
Wo rking on the batte ry . ....... ... . 319
Battery vo ltage .. .. .. .... .... .... ..... 35
B efo re driving ... .... .... ...... .... . 199
Blended gasoline ... .. .... .... .... ... 30 1
Body cavity sealing ........ .... .... .. 294
Boos ter seat ... .. .... .... ... .... .... 251
How do I properly install a booster seat in my veh ic le? . .... .... ... .... .... 251
Safety instructions .. ...... .... ... . 251
Brake flu id
Changing the brake fluid ...... .... . 318
Check ing the brake fluid leve l .... .. 317
What is the co rrect brake fluid leve l? 317
What s hould I do i f th e brake fluid warning
l ight com es on? . .... .... .... .... 317
Brake system Ant i- lock brake sys tem .... .... .... . 21
B rake assis ta nt .... .... ... .... .... 272
Brake booster .. ... .... ... .... .... 271
Brake flu id . ... .... .... ... .... .... 317
Brake f luid specifications for ref ill and
replace men t . .... .... .... ...... . 318
Bra ke light de fective . .... . .... .. .. . 26
Brake pads . ...... .... ... .... .... 278
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

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Electromechanical parking brake ... 134
Fluid reservoir . . . . . . . . . . . . . . . . . . . 317
How does moisture or road sal t affect the
brakes? ....................... 270
Malfunction ..... ... ... .. .... .... . 30
Warning/indicator lights ... .... .... 22
Worn brak e pads symbol ..... .. .... 34
Break -in period . . . . . . . . . . . . . . . . . . . . . 277
B rake pads .. ...... .... ......... . 278
Tires ..... .. .. .... .... ......... . 277
Bu lbs ... .... .... .... ....... .... ... 362
Bumper cover Caution when parking near a parking bar -
rier or curb ...... ... .... .... ... 135
C
Ca lifornia Proposition 65 Warning 308
Battery specific . . . . . . . . . . . . . . . . . . 321
Capacit ies .. .... .... .... .... ... .... 378
Car care . .... .... .... .... .... .... .. 288
Int erior .. .... .... .... .... ...... . 295
P lastic and vinyl .. .... .... ... .... 292
Weatherstrips ...... ... .. ...... .. 293
Car carrier Transporting your vehicle ........ . 369
Care of exterior . .... .... .... .... .... 288
Cargo area
See Loading the luggage compartment ..
205
Cargo net .... .... .... .... ... .... ... 101
Catalyt ic converter . . . . . . . . . . . . . . . . . . 278 Central locking
Emergency locking . . . . . . . . . . . . . . . . 54
Changing a flat tire ...... .... ... .. .... 45
Changing a wheel .... ..... .. .... .... 351
Changing engine oi l .. .... .... .... ... 313
Chassis Undercoating ... .. .... .... .... ... 294
See also Adaptive Aur Suspension . .. 185
CHECK button .... .... .... ..... .. .... 15
Checking Engine coolant level ... .... ..... .. 315
Checking tire pressure ... .. .... .... .. 331
Child restraints Danger of using child restraints in the front seat ... ....... ...... .... .. 220
What types o f child restraint anchors are
avai lable? ... ....... ...... .... .. 256
Where can I get additional information
about child r estraints? ...... ... .. 257
Child safety ...... .. . ... .... ... . 243, 248
Additiona l information ............ 262
Booster seat ... .... ... .... .... ... 251
Convertible child safety seat .... ... 249
Conv ert ible locking r etractor ... .... 253
Guidance fixtures for lower anchorages
259
Important safety instructions for using
child safety seats ..... .. .... .... 246
Important things to know when driving with children . .... .... .... ...... 243
Infant seat .... .... .... .... ... ... 248
Installing a child restrain t using the
LATCH system ...... ...... ..... . 261 Mounting and releasing the anchorage
hook .......................... 262
Older children and safety belts ..... 252
Safety belts and older children .... . 252
Tether anchors .. ...... .... ... .. . 262
Tether strap ........... .... .... .. 263
Which restraint system should my older chi ld wear? .................. .. 252
Child safety lock
Rear doors (mechanical! ...... .... .. 58
Rear doors (power) .... .... .... .... 58
Child safety seat .. .... .... ...... .... 248
Convertible locking r etractor .... ... 253
How do I properly insta ll a chi ld safety
seat in my vehicle? .. ........ .... 246
Installing .. .. .. .... .... ..... .. ... 253
LATCH system ................... 261
Safety instructions .. ...... .... ... 246
Cigarette I ig hter . . . . . . . . . . . . . . . . . . . . 107
Cleaning Alcantara (synthetic suede) .... .... 298
Engine compartment ...... .... ... 299
Fab rics and fabric coverings ... .... 295
Instrument panel ...... ....... .... 296
Interior ... .... .... .... .... .... .. 295
Leather ... .... .... .... ..... .. ... 297
MMI display .............. .... ... 295
MMI terminal ...... .... ..... .. ... 295
Plastic and viny l ... .... .... ....... 292
P lastic parts ..................... 296
Safety belts ... .... .... ... .... ... 299
Trim strips . ....... .... ... .... ... 291
trim strips . ....... .... ....... .... 292
Lower anchorages ........... ..... 258 Cleaning and protection ............. 288