2008 AUDI S8 coolant temperature

Checking and filling -_______________________________ =..:..:..::...::.:..;~:.....:...;_.:..:..,__--=--.J
fl::. WARNING (continued )
• Antifr eez e is po isonous. Always stor e antifreeze in it s origin al
c ontainer and well out of the re ach of ch ildren .
• If you drain the coolant , it must be caught and saf ely stored in
a prop er co ntainer cle arly m arked "poi son ".
0 Note
• Coolant po llutes the environment and cou ld cause an engine
fire. Excess coolant will be forced out through the pressure relief
valve in the cap when the engine becomes hot.
• I f, in an emergency, only wa ter can be added, the correct ratio
between water and
antifreeze => page 314 must be restored as soon
as possib le .
W For the sake of the environment
Drained coolant should not be reused . A lways dispose of used
coolant while observing all environmental regulations . •
Radiator fan
The radiator fan switches on automatically by i tself .
The radiator fan is driven by the engine via the V-be lt. The viscous
clutch regulates the speed of the fan according to the temperature
of the coo lan t.
An auxiliary electric radiator fan * switches on and off depending on
coolant temperature and other vehic le opera ting condi tions.
After you switch the engine off , the auxiliary fan can continue
running for up to 10 minutes -even with the ignition off. It can even
switch on again later by
itself =>& , if
• the temperature of the engine coo lant rises due to the heat
bu ild -up fro m the engine in the engine c ompar tment , or •
the engine compartment heats up because the vehicle is parked
in intense sunlight .
& WARNING
• To reduce the ri sk of per sonal injury never tou ch the radiator
fan .
• The au xiliary elect ric fan i s te mperature controlled and can
switch on suddenly e ven when the engine is not running .
• The au xiliary radiato r fan switche s on auto matically when th e
eng ine coolant reache s a certain temperature and will continue to
run until the coo lant temperat ure drop s. •
Brake fluid
Checking brake fluid level
T he brake fluid level can be checked with a quick glance.
-w ;:;
Fig . 26 8 Engin e
c o mp artm ent: B ra ke
fluid r eservoir
Before you check anyth ing in the e ngine compartmen t,
always read and heed all WARNINGS ~ & in "Working in
t h e engi ne compartment " on
page 307. _,,,
Vehicle care I I irechnical data

___ C_ o_n_ s_ u_m _ e_ r_ ln_ f_o _r_m _ a_ t_ i_o _n ______________________________________________ _
&, 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-

lll'ffll_....:..A..:.;l~ p :..;h..:.; a= b..:e :..;t:.:..i c::..:: a.:..l .,;. in :..:..:. d:..;e :..;x..:..,_ ___________________________________________ _
Driver's seat memory . . . . . . . . . . . . . . . . . 94
Activating remote contro l key .. ... .. 95
Recalling a seat position ...... .... . 94
Storing a seat position ............. 94
Driving messages .................... 29
Dr ivingsafely .... .... .... ...... .... 198
Driving time .... ... .. .... .... ...... .. 38
Dup licate key ......... ............... 47
DVD p layer for navigation system . . . . . 112
E
Easy entry feature 129
Electromechanica l parking brake
Emergency braking ............... 136
Malfunction ........ .... .... .... . 136
Operation . . . . . . . . . . . . . . . . . . . . . . . 134
Parking . . . . . . . . . . . . . . . . . . . . . . . . . 135
Re leasing and app lying .... .... ... 134
Starting
off with a trailer . ...... ... 136
Warning/indicator lights ........... 22
Electronic differential lock (EDU
How the system works . . . . . . . . . . . . 269
Warning/indicator lights ........... 21
Electronic immobilizer .. ...... ..... 14, 49
Electron ic power contro l
(EPC) warning/indicator light .. .... .. 18
Electronic speed limiter .. .. .. .... ..... 28
Electronic stabi lization program (ESP)
How the system works . . . . . . . . . . . . 268
Warning/indicator lights ........... 18
Emergency braking .. ....... .. ...... 136 Emergency
closing
Power sunroof ................. 67, 68
Emergency flasher . . . . . . . . . . . . . . . . . . . 73
Warning/indicator lights ..... ...... 19
Emergency locking ....... .... .... .... 54
Emergency locking of doors ........... 54
Emergency starting ........ .... ... .. 364
Emergency towing ..... .. .... .... ... 366
Emergency warning triangle ... ....... 348
Energy management .... .... ... .. ... 274
Battery power . . . . . . . . . . . . . . . . . . . 275
Driver notification ................ 275
Engine 4.2 I, 8-cylinder (350 hp) .... .... ... 308
6 .0 I, 12-cylinder (450 hp) .......... 309
Compartment . .... .... .... .. 308, 309
Coolant ......................... 314
Hood ... .. .... .... .... .... .... .. 306
Starting ...... .............. 129, 130
Starting with jumper cables .. ... .. 364
Stopping ........................ 131
Engine compartment ... .. .... .... ... 308
Safety instructions .......... ..... 307
Working the engine compartment .. 307
Engine coolant ..................... 314
Adding coolant ............. ..... 316
Checking the engine coo lant level .. 315
Expansion tank .................. 315
Malfunction symbo l ...... .... .... . 31
Radiator fan ...... .... .... .... ... 317
Temperature gauge . . . . . . . . . . . . . . . 12
Engine data ........................ 378 Engine hood
Closing ..... .. .... .... ...... ... . 307
How to release the hood . . . . . . . . . . 306
Engine oi l ..... ... .... .... .... ...... 309
Adding ......................... 312
Additives ........................ 312
Changing .. .... .... ..... .. .... .. 313
Checking the engine oil level ....... 311
Indica tions and conditions requiring extra
checking .. ...... .... ...... .... 311
Oil consumption ................. 311
Oil grades .. .... .... ... .... .... .. 309
Oil level symbol .... .... ...... ... .. 35
Pressure ma lfunction ... ... .... .... 32
Recommended oil check intervals .. 311
Sensor defective . . . . . . . . . . . . . . . . . . 35
Specification and viscosity ......... 309
Environment Break -in period .................. 277
Catalytic converter .... .... .... ... 278
Disposing of your vehicle battery ... 322
Driving at high speeds ....... ... .. 279
Driving to minimize pollution and noise .
279
Fuel ...... .... ........... .... ... 303
Fuel economy .......... .... .... .. 279
L eaks under your vehicle .......... 307
Le tting the vehicle stand and warm up ..
280
Proper disposal of drained brake fluid
318
Proper disposal of drained engine coolant . .... .... .... .... ....... 316

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_i c_ a_l _in _ d_e _ x __ lllll
Proper disposal of drained engine oil ...
312,3 13
Recycling used engine oi l ...... .... 312
Un leaded fuel ..... .... ... .... .... 301
What should I do with an old battery?
322
EPC
See Electronic power control ........
18
ESP
See E lectronic stabi lization program
( E SP) ...........................
18
Event Data Recorder (EDR) ... .... .... . 268
Expans io n t ank ...... .... ... .... .... 315
F
Fan
Rad ia tor .. ...... .... .... ... .... .
317
Flat tire changing .. ... .... .... ... .. .. 45
Floor mats ... .. .... .... .... ... .... . 205
Fog lights
Front . ...... .... .... .... ..... .. ..
71
Rear .... ... .. .... .... ... .... .... . 71
Warning/indicator lights ...... .... .. 19
Fo lding master key with remote control .
47
Foot pedals ........................ 204
For the sake of the environment
Gaso line fumes and the enviro nment
303
Letting yo ur engine warm up . ...... 130
Reduc ing eng ine noise by ea rly
upshifting .. .... .... ............
12
Refuel ing .... .... ....... .... .... 303
Saving fuel by early upshifting .. .... 12
Using the rear w indow defogger .... 124
Controls and equip­ ment Safety first
Front airbags
Description ......... ...... .... ...
222
How they work .... .... .... ....... 227
F ront arm rest
adjusting .........................
93
Storage compartm ,ent .............. 93
Fr ont ash tray .. ...... .... .... .... ... 106
Front fog lights ..... .... .... .... .... . 71
Front seats ...... ...... ... .. .... .... . 86
Adjusting ....................... 201
Child restraints in the front seat . ... 220
Convenience side view ............. 91
Pockets ............. .... .... .... 11 0
Symmetrica l seat positions ......... 91
Fronta l collisions and the laws of phys ics
210
F uel
Additives ..... .... .... .... .......
301
Average consumption ...... .... .... 38
Blended gasoline .... ....... .... .. 301
Fuel filler neck ............. .... .. 302
Fuel gauge .. ....... .... .... .... .. 14
Gaso line .. .... ..... ...... .... ... 301
Gaso line additives .. ....... ....... 302
Instantaneous fuel consumption .. ... 38
Low fue l level sym bol ... .. .... .... . 35
Octane rating ... .. .... .... .... ... 301
Rec ommendat ion ... .... ... .. .... 301
Refuel ling .. ...... .... .... .... ... 303
Reserve ... ....... .... .... ....... . 14
Tank capacity ................. 14,378
Unlocking the fuel filler flap by hand 305
Fuse arrangement . ...... .... ..... .. . 358
G
Garage door opener (HomeLink®) ...... 191
Gas discharge lamps ...... .... .... ... 362
Gauges
Engine coolant temperature . ...... ..
12
Fuel gauge . ...... .... ... .... .... . 14
Speedomete r ..... .... ... .... ..... 14
Tac ho m eter . ... ... .... ... .... .... . 13
Trip odometer ... .. .... .... ...... .. 14
Gene ral il lustration
Instruments a nd controls ... .. .... ..
11
Generator
Warning/indicator lights ...... .... ..
18
G lossa ry of tire and loading te rmin ology . . .
325
Glove compartment ................. 109
cd changer ........... .... .... ...
109
Owner's Literature ................ 109
Gross Vehic le We ight Rating (GVWR) ...
375
H
Head restraints ....... ... .... .... ... 203
Adjusting ...... .... ... .... .... ... 203
Comfort head restraints ............ 91
Front seats ... .... .... .... .... .... 91
Rear seats .... .... .... ...... ... .. .
92
Headlight ra nge co ntrol ...... .... ... .. 36
Headlights .. .. .. .... .... ...... .... .. 69
Adaptive Light .................... 72
Defective .. ........... .... .... .... 26
Front fog l ig hts .................... 71
Vehicle operation Vehicle care Do-it-yourself service Technical data