open gas tank AUDI S8 2009 Owners Manual

Fuel supply and filling your fuel tank
Blend of gasoline and ethanol (grain alcohol or ethyl alcohol}
• Anti-knock index must be 87 AKI or higher.
• Blend must not contain more than 10% ethanol.
Blend of gasoline and MTBE
• Anti-knock index must be 87 AKI or higher.
• Blend must contain not more than 15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform especially well for
winter or summer driving. During seasonal change -over, we suggest
that you fill up at busy gas stations where the seasonal adjustment
is more likely to be made in time.
0 Note
• Methanol fuels which do not meet these requirements may
cause corrosion and damage to plastic and rubber components in
the fuel system.
• Do not use fuels that fail to meet the specified criteria in this
chapter.
• If you are unable to determine whether or not a particular fuel
blend meets the specifications, ask your service station or its fuel
supplier.
• Do not use fuel for which the contents cannot be identified.
• Fuel system damage and performance problems resulting from
the use of fuels different from those specified are not the responsi ­
bility of Audi and are not covered under the New Vehicle or the
Emission Control System Warranties.
• If you experience a loss of fuel economy or driveability and
performance problems due to the use of one of these fuel blends,
we recommend that you switch to unblended fuel. •
Gasoline additives
A major concern among many auto manufacturers is carbon
deposit build-up caused by the type of gasoline you use.
Although gasoline grades differ from one manufacturer to another,
they have certain things in common. All gasoline grades contain
substances that can cause deposits to collect on vital engine parts,
such as fuel injectors and intake valves. Although most gasoline
brands include additives to keep engine and fuel systems clean,
they are not equally effective.
Audi recommends using TOP TIER Detergent Gasoline. For more
information on TOP TIER Detergent Gasoline, please go to the offi­
cial website (www.toptiergas.com).
After an extended period of using inadequate fuels, carbon deposit
build-ups can rob your engine of peak performance.
(D Note
Damage or malfunction due to poor fuel quality is not covered by
the Audi New Vehicle Limited Warranty. •
Fuel tank
Fuel filler neck
The fuel filler neck is located on the right rear side panel behind the
fuel filler flap.
If the power locking system should fail, you can still open the flap
manually - for detailed instructions see=>
page 307.
You can find the fuel tank capacity of your vehicle in Technical Data
=> page 380. .,_

The labe l on the inside of the fuel filler flap tel ls you the correct fuel
fo r your vehicle . For mo re information about fuel specifications, see
=> page 303.
Your vehicle fuel tank has an onboard refuelling vapor recovery
sys tem. Th is feature helps to prevent fue l vapors from escapin g
from the tank and polluting the environment wh ile you refue l your
veh ic le . I n order to fill the tank properly while protecti ng the envi­
ronment, please follow this refuel ing procedure carefully .
& WARNING
Under normal operating conditions , never carry additional fuel
c ontainers in your car . Ga s canisters and other containers used to
transport fuel can be dangerous . Such conta iners , full or empty,
may leak and could cause a fire in a collision . If you mu st transport
fuel to use for your l awn mower , snow blower , etc. , be very c areful
and always ob serve local and state laws regarding the u se , tran s­
port ation and storage of su ch fuel containers . Make certain the
c ontainer meets industry standard s (ANSI/ASTM F852 -86 1.
0 Note
Neve r d rive your vehicle until the fuel tank is completely emp ty . The
irregular supp ly of fuel can cause misfiring . Gasoline could enter
t he e xhaus t system and damage the cataly tic converter. •
Fuel supply and filling your fuel tank
Refuelling
The fuel filler fl ap is unl ocked f rom a but ton i n the driver' s
d oor.
,._
"'
Fig . 25 7 Driver 's do or:
Unlo cking fuel filler
flap
F ig . 25 8 Fue l cap
ho oked on th e op ened
fuel filler flap
W hen a dding f uel, the ig nitio n and a ny c ellu lar phones in
th e ve hicl e m ust b e sw it c hed
off.
Taking the fuel cap off
To open t he fue l fille r flap, press the button~ fig. 257 .
Unsc rew f ue l filler cap co unter-c lockwise and hang it on
the fue l fi ller flap ~ fig. 258 . ..,
Vehicle care I I irechnical data

Fuel supply and filling your fuel tank Refuelling procedure
- Insert the fuel nozzle from the gasoline pump into the
fuel filler neck as far as it will go.
- Select a medium refuelling rate so that the nozzle switches off automatically when the tank is full.
Putting the fuel cap back on
- After filling your tank, twist the fuel filler cap clockwise
until you hear a definite click.
Close the fuel filler flap.
To avoid fuel spilling or evaporating from the fuel tank always close
fuel filler cap properly and completely. An improperly closed fuel
filler cap may also cause the MIL lamp=>
page 27to come on.
& WARNING
Improper refueling or handling of fuel can cause fire, explosion
and severe burns.
• Fuel is highly flammable and can cause severe burns and other
injuries.
• Failure to shut the engine off while refueling and/or to insert
the pump nozzle fully into the fuel filler neck could cause fuel to spray out of filler neck or to overflow. Fuel spray and overflowing
fuel can cause a fire.
• Never use a cellular telephone while refueling . The electromag­
netic radiation can cause sparks that can ignite fuel vapors and
cause a fire.
• Never get back into your vehicle while refueling. If in excep­
tional circumstances you must get back in your vehicle while refu­
eling, make certain that you close the door and touch metal to
discharge static electricity before touching the filler nozzle again.
Static electricity can cause sparks that can ignite fuel vapors
released during refueling .
& WARNING (continued)
• Never smoke or have an open flame anywhere in or near your
vehicle when refueling or filling a portable fuel container.
• For your safety, we strongly recommend that you do not travel
with a portable fuel container in your vehicle. The container, full or
empty may leak and could cause a fire, especially in a crash.
• If, under exceptional circumstances, you must transport a
portable fuel container, please observe the following:
-Never fill a portable fuel container while it is anywhere in or
on the vehicle (for example, in the luggage compartment, or on
the trunk). Static electricity can build up while filling and can
ignite fuel vapors causing a fire.
- Always place a portable fuel container on the ground before
filling.
- Always keep the filler nozzle completely inside the portable
container before and during filling.
- If filling a portable container made of metal, the filler nozzle
must always be in contact with the container. This will help
prevent static electricity from discharging and cause a fire.
- Never spill fuel inside the vehicle or luggage compartment. Fuel vapors are highly flammable .
- Always observe local and state/provincial laws regarding the
use, storage and transportation of fuel containers.
- Make certain the fuel container meets industry standards
(ANSI / ASTM F852-86l.
0 Note
If any fuel has spilled onto the car, it should be removed immedi -
ately to prevent damage to the paint. _.,

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_i c_ a _ l _in _ d_e _ x __ _
Fuel economy ...... .... .... .... .. 281
Leaks under your vehicle ... .. .... . 309
Lettin g the vehicle s tand and warm up .
28 2
Pr oper disposal of drained brake fluid
320
Proper disposal of dra ined e ngine
coolant ........................ 318
Proper disposal of drained engine oil ...
314,3 15
Recycling used engine oi l ........ .. 314
Un leaded fuel ... .. ... .. ...... .... 303
What should I do with an old battery? 324
EPC
See Electronic power control ........ 18
ESP
See Electronic stabilization program
(ESP) ... ..... ......... ....... ... 18
Event Data Recorder (EDR) ... .... ..... 270
Expans ion tank ...... ... .. ........ .. 317
F
Fan
Radia tor .. ...... ........ ..... .. . 319
Flat tire changing .................... 45
Floor mats ..... .... .... .... ... .... . 207
Fog lights Front .. ... .. .... .... .... ...... ... 71
Rear .... ... .. ....... .. ....... ... . 71
Warning/indicator lights ...... .... .. 19
Fo lding master key with remote control . 47
Foot pedals ... ... .. .... .... .... .... 206
Controls and equip­
ment Safety first
For the sake of the environment
Gaso line fumes and the environment 305
L etting your engine warm up .. .... . 130
Reducing engine noise by ear ly
upshifting . ...... .... .... ... .... . 12
Refueling . .... ... .... .... .... .... 305
Saving fuel by early upshifting .... .. 12
Using the rear window defogger .... 124
F ront a irbags
Description ... .... .... .... .... ... 224
How they work ................... 229
Front arm rest adjusting ..... ... .... .... .... .... . 93
Storage compartment ... ...... .... . 93
Front ashtray .... ..... .. ..... .... ... 106
Front fog lights ... .. .... .... .... .... . 71
Front seats ...... .... ........ ....... . 86
Adjusting .. ...... .... .... .... ... 203
Ch ild restra ints in the front seat ... . 222
Convenie nce side v iew .. ...... .... . 91
Poc kets ... .. .... .... .... .... .... 1 10
Symmetrica l seat positions . ...... .. 91
Fronta l collisions and the laws of physics
212
Fuel Additives ... .. ..... .. .... .... .... 303
Average c onsumption .... ...... ... . 38
Blended gasoline ... .. .... .... .... 303
F uel filler neck . ...... .... .... .... 304
Fuel gauge .. ....... .... .... .... .. 14
Gasoline ...... ... .... .... .... ... 303
Gaso line additives ................ 304
I nstantaneous fuel consumption ..... 38 Low
fuel level symbol .... ... .. ..... 35
Octane rating .... .... .... .... .... 303
Recommendation . .... .... .... .... 303
Refuelling . ... .... .... ...... ..... 305
Reserve .......................... 14
Tank capacity .. ...... .... .... . 14, 380
Un lock ing the fue l filler flap by hand 307
Fuse arrangement ... ....... ... .. .... 360
G
Garage door opener (Homelink®) ...... 194
Gas discharge lamps ...... .... .... ... 364
Gauges Engine coolant temperature . ...... .. 12
Fuel gauge ... .... .... ... .... .... . 14
Speedomete r ..... .... ... .... ..... 1 4
Tac hometer . ... ... .... ... .... .... . 13
Trip odometer ... .. .... .... ...... .. 14
General illustration Instruments and controls ......... .. 11
Generator Warning/indicator lights .... .... .... 18
G lossary of t ire and loading terminology . . .
327
G love compartment .. ....... .... .... 109
cd changer ... .... .... .... .... ... 109
Owner's Literature .... .... .... .... 109
Gross Vehic le Weight Ra ting (GVWR) ... 377
Vehicle operation Vehicle care Do-it-yourself service Technical data