2009 AUDI S8 fuel pressure

Tires and wheels -
----------------
•
0 Note
Driving without valve stem caps can cause damage to the tire
valves. To prevent this, always make sure that factory installed valve
stem caps on all wheels are securely mounted on the valve .
W For the sake of the environment
Underinflated tires will also increase the fuel consumption. •
Tires and vehicle load limits
There are limits to the amount of load or weight that any vehicle and
any tire can carry . A vehicle that is overloaded will not handle well
and is more difficult to stop. Overloading can not only lead to loss
of vehicle control, but can also damage important parts of the
vehicle and can lead to sudden tire failure, including a blowout and
sudden deflation that can cause the vehicle to crash.
Your safety and that of your passengers also depends on making
sure that load limits are not exceeded. Vehicle load includes every­
body and everything in and on the vehicle. These load limits are
technically referred to as the vehicle's
Gross Vehicle Weight Rating
("GVWR"l.
The "GVWR" includes the weight of the basic vehicle, all factory
installed accessories, a full tank of fuel, oil , coolant and other fluids
plus maximum load. The maximum load includes the number of
passengers that the vehicle is intended to carry ("seating capacity")
with an assumed weight of 150 lbs (68 kg) for each passenger at a
designated seating position and the total weight of any luggage in
the vehicle. If you tow a trailer, the weight of the trailer hitch and the
tongue weight of the loaded trailer must be included as part of the
vehicle load.
The
Gross Axle Weight Rating ("GAWR"l is the maximum load that
can be applied at each of the vehicle's two axles. The
Gross Vehicle Weight Rating and the Gross Axle Weight Rating
are listed on the safety compliance sticker label located either on
the driver's side 8-pillar or on the inside of the fuel filler flap. Your
Audi has 5 seating positions, 2 in the front and 3 in the rear for total
seating capacity of 5. Vehicles with power individual rear seats*
have 4 seating positions, 2 in the front and 2 in the rear for total
seating capacity of 4. Each seating position has a safety belt
~ page 211, "Safety belts".
The fact that there is an upper limit to your vehicle's Gross Vehicle
Weight Rating means that the total weight of whatever is being
carried in the vehicle (including the weight of a trailer hitch and the
tongue weight of the loaded trailer) is limited. The more passengers
in the vehicle or passengers who are heavier than the standard
weights assumed mean that less weight can be carried as luggage.
The tire pressure label on your Audi also lists the maximum
combined weight of all of the occupants and luggage or other cargo
that the vehicle can carry. For the location of the label
~ page 330,
fig. 274.
& WARNING
Overloading a vehicle can cause loss of vehicle control, a crash or
other accident, serious personal injury, and even death.
• Carrying more weight than your vehicle was designed to carry
will prevent the vehicle from handling properly and increase the
risk of the loss of vehicle control.
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehicle within a safe distance.
• Tires on a vehicle that has been overloaded can fail suddenly,
including a blowout and sudden deflation, causing loss of control
and a crash.
• Always make sure that the total load being transported -
including the weight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
vehicle's Gross Vehicle Weight Rating. •
Vehicle care
I t •

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0
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©
®
U.S. DOT ti re identification number
Sever snow conditions
Tire ply composition and materials used
Maximum load rating
Treadwear , traction and temperature grades
@ Maximum permissible inflation pressure
The tires and rims are essential parts of the vehicle 's design. The
tires and rims approved by Audi are specially matched to the char­
acteristics of the vehicle and can make a major contribution to good
road hold ing and safe handling when in good cond ition and prop­
erly inflated =>& .
We recommend that a ll work on tires and wheels be performed by
an authorized Audi dealer. They are familiar with recommended
procedures and have the necessary special tools and spare parts as
well as the proper facilities for d isposing of the old tires.
Authorized Audi dea lers have the necessary info rmation about tech ­
nical requirements for insta lling or changing tires and rims.
R epl ac ing tires and wheels
Tires shou ld be replaced at least in pairs and not individually (for
examp le both front tires or both rear tires together).
Be sure to read and heed the information to the tire pressure moni ­
toring system*=>
page 340.
Always buy replacement radial tires that have the same specifica ­
tions as the tires approved for your vehicle by Audi. Rep lacement
tires must always have the same load rating specification as the
origina l equipment or approved optional t ires listed in the table
=>
page 330.
Audi -appr oved spec ification tires are spec ially matched to your
vehicle and its load limits, and can contribute to the important road- holding, driving characteristics, and safety of the vehicle
. The table
(=>
page 330) l ists specifications of the tires approved for the Audi
models covered by your Owner's Literature.
The tire pressure labe l located either on driver's side 8 -pi llar or
inside the fuel fi ller flap(=>
page 330, fig. 275) lists the specifica ­
tions of the original equipment tires installed on your vehicle at the
ti me it was manufactured.
Federa l law requires tire manufacturers to place standardized infor ­
mation on the sidewa ll of all tires =>
page 338, fig . 278. This informa ­
t ion identifies and describes the fundamental characteristics, the
qua lity grade of the ti re and also provides a tire identification
number for safety standard certificat ion and in case of a recal l.
Tire specificat ions
Knowledge of tire specifications makes it easier to choose the
co rrect t ires . Radial tires have the tire specifications marked on the
sidewall, for example:
255 /45 R 18 99 H
This contains the following informat ion:
P Indicates the ti re is for passenger cars (where applicab le)
255 No minal tire width i n mm of the tire fro m sidewall edge to side -
wa ll edge. In general, the larger the number, the wider the tire
45 Height/width ratio in percent (aspect ratio)
R Tire construction: Radial
18 Rim diameter code (in inches)
99 Load rating code
H Speed rating lette r code
XL (or "xi", "EXTRA LOAD" or "RF") indicates that the tire is a "Rein­
forced" or an "Extra Load" ti re
M +S (o r "M/S") Indicates that the tire has some mud and snow capa ­
bility
The tires could a lso have the information of direct ion of rotation
=>
page 326.
Vehicle care I t •

___ A_l.:,. p _h_ a_ b_e _t _i c_ a_l _i n_ d_e _x ____________________________________________ _
Driver information display
Driver information messages .. .... . 29
Introduction . ....... ... .. .... .... . 24
Open door or rear lid warning .. .... . 26
Outs ide temperature disp lay .... .... 25
Sound system display ... .. .. . .... . 25
Driver In forma tion Sys tem
Digital speedometer . . . . . . . . . . . . . . . 25
Driver's seat . . . . . . . . . . . . . . . . . . . . . . . . 87
Driver's seat memory . . . . . . . . . . . . . . . . . 94
Activating remote contro l key . ..... . 95
Recalling a seat position ...... .... . 94
Storing a seat position . ...... ..... . 94
Driving messages .................... 29
Driving safely ... .... ... .... ... .. ... 200
Driving time . .... .... .... .... .... .... 38
Dupl icate key . ........ ... .... .... ....
47
DVD player for navigation system . . . . . 112
E
Easy entry feature 129
Elect romechanica l parking brake
Emergency braking .... .... ... .... 136
Malfunction .. .... .... .... ... .... 136
Operation . . . . . . . . . . . . . . . . . . . . . . . 134
Parking . . . . . . . . . . . . . . . . . . . . . . . . . 135
Releasing and app lying .. .... ..... 134
Starting off with a trailer . .... ..... 136
Warning /indicator lights . .......... 22
Electronic differential lock (EDU How the system works . . . . . . . . . . . . 271
Warning/indicator lights . .... ..... . 21 Electronic immobili
ze r .. .. .... ..... 14 , 49
Electronic power control (EPC) warning/indicator light ... ..... 18
Electronic speed limiter .... .... .... ... 28
Electronic stabi li z ation program (ESP)
How the system works ....... .... . 270
Wa rning/indicator ligh ts ........... 18
Emergency braking . .......... .. ... . 136
Emergency closing Power sunroof . ... .... .... .... . 66 , 67
Emergency flasher . . . . . . . . . . . . . . . . . . . 73
Warning/indicator ligh ts ........... 19
Emergency locking . . . . . . . . . . . . . . . . . . . 54
Emergency locking of doors .. ... ... .. . 54
Emerg ency starting . ...... .. ... .... . 366
Emergency towing .. ... .. ... .. .. .... 368
Emergency warning triangle .. ... .... . 350
Energy management ... .. ..... ... ... 276
Battery power . . . . . . . . . . . . . . . . . . . 277
Driver no tification . . . . . . . . . . . . . . . . 277
Engine 4.2 1, 8-cylinder (350 hp) .... ... .... 310
6.0 I, 12 -cylinder (450 hp) . ...... ... 311
Compartment ... .... .... .... 3 10,311
Coolant . .. ...... ... ........ .. ... 316
Hood . .... .... .... .... ........ .. 308
Starting .. .... ... ..... ... ... 129, 130
Starting wi th jumper cables ... .... 366
Stopping ............ .... .... .... 131
Engine compartment ... .... .... ..... 310
Safety instructions .......... .... . 309
Working the engine compartment .. 309 Engine coolant
.. .. .. .. .. .... .... ... 316
Adding coolant ... .... .... .... ... 318
Checking the engine coolant level .. 317
Expans ion tank .... ... .... .... ... 317
Malfunction symbol ... .... .... .... 31
Radiator fan .... . ...... .... .. ... . 319
Temperature gauge ... .... .... .. .. 12
Engine data .. ..... .. . ... ... . .. .. .. . 380
Engine hood Closing ... .. .... .... .. .. . ... ... . 309
How to release the hood . . . . . . . . . . 308
Engine oil ... ..... .... .... .. . ... ... . 311
Adding ..... .... .... .. .. . ... ... . 314
Additives . ... .... .... .. .. . ... .... 314
Changing .... .... .... ... . ... .... 315
Checking the engine oil leve l ....... 313
Indications and conditions requir ing extra
checking .... .... .... ... .... ... 313
Oil consumption . ...... .. .. ... .. . 313
Oil grades ..... ... ... ...... ... .. . 311
Oil level symbol .. ........ .... ... .. 35
Pressure malfunction ...... .... .. . . 32
Recommended oil check intervals . . 313
Sensor defec tive . . . . . . . . . . . . . . . . . . 35
Speci fication and viscosity .. .... ... 311
Engine speed limitation . ... .. ... .... .. 35
Environment Break -in period ....... ........... 279
Catalytic converter .... ..... ...... 280
Disposing of your vehic le battery ... 324
Driving at high speeds ... .... ... .. 281
Driving to minimize pollution and noise . 281
Fuel .. ...... ....... ...... .... ... 305

________________________________________________ A_l.,_p _h_ a_ b_e _ t_ i_ c _a _l_ i_n _d_ e_ x __ _
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Compartments in the door trim panels .
111
Compartments in the rear doors ... . 111
Cupholder .. ...... .... ...... .... . 105
Cupholder rear cente r armrest .. ... 105
Glove compartment ............... 109
Luggage compartment ........ .... 112
Ski sack . . . . . . . . . . . . . . . . . . . . . . . . . 102
Sma II objects . . . . . . . . . . . . . . . . . . . . 110
Sun shade .......... ....... .... .... . 78
Sun visors .......................... 77
Switches
Emergency flashers ................
73
Power sunroof .... ... ... ... .. ... .. 65
Rear window defogger .... ........ 124
Symbols
Red ......... .... ....... .... .....
30
Ye llow ........................... 34
T
Tachometer ..... .... .... ............ 13
Technical modifications ...... ...... .. 385
Temperature
Climate controls .. .... .... ..... ...
117
Setting for the driver's and front passen-
ger's side ......................
117
Tether strap ............. ........... 265
Securing the upper tether strap 266
The first 1,000 miles (1,500 km) and
afterwards .....................
279
Tie -down eyelets ................ 100, 209
Controls and equip­ ment Safety first
Tips
for the environment
Saving fuel ... ... .... ...... ......
104
Using the air conditioner only when
necessary ......... ...... .... .. .
. . ® t1ptronic ......................... .
Au tomatic Shift Lock (ASU ... ... .. .
123
166
168
Driving ........ .... ... .... ....... 166
Dynamic shift program ...... ...... 169
Fail -safe mode ......... ...... .... 171
Kick -down .. ...... .... .... ..... .. 169
Manual shift program ..... .... .... 170
Selector lever .................... 167
Tire pressure ... .... ... .. .... .... ... 333
Tire pressure monitoring system ....... 41
Displaying tire pressures .... ..... .. 44
Initialize wheels ........... ....... . 45
Learning process ...... ....... ..... 44
Loss of air pressure ............. 20, 43
Malfunctions ... .. .... .... ....... . 46
Tires and vehicle load limits .. .. .. .... 335
Tires and wheels
Checking tire pressure ... .. .... ...
333
Cold tire inflation pressure ......... 330
Dimensions ...................... 338
General notes ...... .............. 326
Glossary of tire and loading terminology
327
New tires and wheels ........ .... . 338
Replacing ..... .. .... .... .... .... 339
Snow chains .......... .... .... ... 344
Ti re pressure monitoring system .... 340
Tires and vehicle load limits ........ 335
Wheel bolts ... .... .... ..... .. .... 345
Winter tires ........... ...... ..... 343
Tires/Wheels
Low aspect ratio tires ... .. .... ....
345
Tools .............................. 352
Torn or frayed safety belts ........ .... 214
Sensors ............ · · · · · · · · · · · · · 340 Touch -up paint ... .. .... .... .... .... 294
Storing tire pressures ..... .... .... . 44 Towing
Tires and wheels .................
340 Tow truck procedures ............. 368
Valves ...... ....... ...... .... ... 340 Towing hitch
Tire service life ........ .... ... .. ....
337 Audi parking system ... ...... .... . 183
Tires .... ...... ......... .... ....... 326 Towing loop ........................ 369
Replacing ....................... 340 front .... ... .. .... .... ..... .. .... 369
Service life ........ .. ....... ..... 337 rear ... ... .... ....... ...... ..... 370
speed rating letter code ..... ...... 340 Trailer towing ....................... 284
Tire manufacturing date .. ........ . 340
Tire specifications . .... ........... 339
Tread depth .......... .... ... .... 337
Uniform tire quality grading .... .... 342
Winter tires ........ ... .... .... ... 343
Operating instructions . .... ....... 285
Technical requirements . ...... 284, 285
Trailer towing tips ........ .... .... 286
Train
Transporting your vehicle .. ........
371
Vehicle operation Vehicle care Do-it-yourself service Technical data

___ A_l.:. p _h_ a_ b_e _t _ic _ a_l _in _ d_e _x ____________________________________________ _
Transmission
See Automatic transmission . . . . . . . 166
Transport Canada . . . . . . . . . . . . . . . . . . . 210
Transporting your vehicle . . . . . . . . . . . . 371
Tr ead Wear Indicator (TWll ........... 337
Trip computer
V
Vanity mirror front ... ... .... ................ .. 77
rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Vehicle electrical system .. ..... .. .... . 18 Ti
re pressure monitoring system .... 20
Turn signals ... .... .... ... .... .... 19
Warranty coverages .... .... .. .... ... 382
Washer reservoir ... .... ..... .. ...... 325
Washing . .... .... .... .... ... .... ... 290
Automatic car wash ... ... ... .. ... 291
Fuel consumption ...... .... ... ... . 38
Vehic le ide ntification labe l .... ... .... 376
by hand .................... .. ... 291
Mi leage ...... ............ ....... 38
Sing le -trip memory .. ...... ...... .. 39
Total -trip memory .. .... ... .... .... 39
Trip odometer . . . . . . . . . . . . . . . . . . . . . . . 14
What does it mean when dEF appears in the trip odometer display? ....... . 14
Trunk
See Rear lid . .............. ....... 54
Trunk escape handle ................ 350
furn signals ........................
73
Warning/indicator lights ........... 19
u
Undercoating . . . . . . . . . . . . . . . . . . . . . . 296
Unfastening safety belts ...... ...... . 217
Un idirectiona l tires ..... ... ... ... .... 326
Uniform tire quality grading .......... 342
Un locking
Power locking switch . . . . . . . . . . . . . . 53
Rear lid/trunk lid ...... .... ...... .. 54
Remote control .. ...... ...... .... . 51
Using the key ..... .... .... ...... .. 52 Vehic
le Identification Number (VIN) .... 376
Vehic le jack .......... .... .... .. 351, 356
Vehic le literature .......... ... .... .... . 5
Vehic le transport . .................. 371
Vehic le -care products . . . . . . . . . . . . . . . 290
Venti lated seats .................... 118
w
Warning/indicator ligh ts . .... ....... .. 16
Adaptive Air Suspension ........ 20, 21
Adaptive Cruise Control . . . . . . . . . . . 146
Airbag system . . . . . . . . . . . . . . . . . . . . 19
Anti- lock brake system (ABS) . . . . . . . . 21
Brake system . . . . . . . . . . . . . . . . . . . . . 22
Cruise con tro l . . . . . . . . . . . . . . . . . . . . 21
Electromechanica l parking brake .... 22
Electronic power control ...... .... . 18
Electronic stabilization program (ESP) 18
Fog lights ........................ 19
Generator . . . . . . . . . . . . . . . . . . . . . . . . 18
High beam . . . . . . . . . . . . . . . . . . . . . . . 19
Instrument cluster. . . . . . . . . . . . . . . . . 12
Malfunction Indicator Lamp (MIU .. .. 20 with a power washer
... ... ....... . 292
Washing the vehicle ....... ... ... ... . 290
Waxing .. .... .... .... .... ... .... ... 293
Wear indicator ......... ............ . 337
Weatherstrips .... .... .... ... .... ... 295
Weights ....................... .... 377
What happens if you wear your safety belt too loose? ........... .... ..... .. ... 216
What happens to unbelted occupants? . 213
What impairs driving safety? .......... 201
What should I do after changing a wheel?
334
What should I do after replacing wheels?
334
Wheel bolts Torque ..... ...... .... ....... ... 345
Wheels .. .... .... .... .... ... .... ... 326
Cast alloy ....................... 295
Checking tire pressure .. .... ...... 333
Co ld tire inflation pressure ........ 330
General notes ... ........... .... .. 326
G lossary of tire and loading termino logy .
327
New tires and wheels ............. 338
Rear fog lights .... .... ...... ... · · · 19 T" d h. I I d
1· ·t 335
ires an ve Ic e oa Im1 s ... ... .
Safety be lt . . . . . . . . . . . . . . . . . . . . . . . 20 .,
214
When must a safety belt be replacedr . .