2009 AUDI S8 lock

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. _.,

<£> For the sake of the environment
As soon as the correctly operated nozzle switches off automatically
for the first time, the tank is full. Do not try to add more fuel because
fuel may spill out. In addition, the expansion space in the fuel tank
will be filled -causing the fuel to overflow when it becomes warm
and pollute the environment.
[ i] Tips
• Running your engine while refuelling may cause vapors to
escape or even cause fuel to spill out of the tank. This would then
shut off the fuel nozzle before the tank is full.
• Do not refuel your vehicle with the ignition turned on . The fuel
gauge may otherwise not indicate the correct fuel level after
refuelling. •
Unlocking the fuel filler flap by hand
You can open the fuel filler flap by hand if the power
locking system should fail.
Fig . 259 Luggage
compartment : Right­
side storage area
Fuel supply and filling your fuel tank
Fig. 260 Luggage
compartment : Emer­
gency opening of fuel
filler flap
- Rotate the two pins @ to the vertical position to open
the storage area. ::::;, fig. 259.
- Unclip the loop @ and move it to position ©::::;, fig.
260.
- Pull the loop down to position © to unlock the fuel filler
flap. •
Vehic le care I I irechnical data

_____________________________________________ C_ h_ e .=....= c..:..k :..:.in :....:..:= g:.....= a..:..n .:....:d::......:. f.:..:il .:..:li ..:..n ::.:g:!....-_11111
•
Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced .
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage => &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ & .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake .
& WARNING (continued)
• Move selector lever to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment .
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm . The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary :
- Always disconnect the battery.
- Never smoke or work near heaters or open flames . Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine
is running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition system.
• If you must perform a check or repair with the engine running: -First, fully apply the parking brake, move selector lever to "P"
(Park). .,
Vehicle care
I t •

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
& WARN ING (c o ntinued )
• Turn off the engine and all ow it to c ool down .
• Protect your f ace, hand s and arms from e scaping flu id and
s te am by covering the cap w ith a large , thick rag .
• Turn the cap slowly a nd ve ry ca re fu lly
in a c ounter -clockw ise
dire ction while applying light , downward pres sure on the top of
the cap.
• To avoid being burned , do not spill antifree ze or coolant on the
e x hau st sy stem or hot eng ine parts . U nde r certain conditions , the
ethylene glycol in engine coolant can cat ch fire .
0 Note
Do not add any type of radiator leak sealan t to your vehic le's engine
coolant. Adding radiator repair fluid may adversely affect the func ­
tio n and performance of your coo ling system and could resu lt in
damage not covered by your New Vehicle Limited Warranty .
[ i J Tips
On vehicles with the 12 -cylinder engine, the expansion tank is
located under a cover .•
Adding coolant
Be very careful when adding engine coolant.
Before you check a nything in the e ngine compartment,
alway s read and heed all WARNINGS=:> & in "Working in
the engine compartment" on
page 309.
Turn off the engine.
Let the engine coo l down. -
Pla ce a t hick rag over t he co ola nt expansio n tank
=:> page 317, fig . 269 and carefully tw ist the cap cou nter ­
clockw ise
=:> & .
- Add cool ant.
Twist the cap on again
tightly .
Replacement engine coolant mus t conform to exact specifications
=> page 316, "Coolan t". Even in an emergency, if coolant additive
G 12+ +, G12 + or G12 is not availab le, do
not use a different additive.
Use plain water instead until you can get the correct additive and
can restore the correct ratio . This should be done as soon as
possible.
I f you have lost a cons iderable amount of coolant, then you should
add cold antifreeze and cold water only when the engine is cold .
A lways use
new engine coolant when refil ling .
Do not fi ll coo lant above the "MAX" mark . Excess coolant wil l be
f orced out through the p ressure relief valve in the cap when the
eng ine becomes hot.
& WARNING
• The cooling system i s under pre ssure and can g et very hot .
Redu ce th e risk of scalding from hot coolant by following these
s tep s.
- Turn off the e ngine a nd allo w it t o cool down .
- Protect your fac e, hand s and arms from e sc a ping fluid and
steam by covering the cap with a large, thi ck rag .
- Turn the cap slo w ly and very caref ully in a counter -clockwi se
dire ction while applying light , downward pres sure on the top
of the cap .
- To avoid being burned , do not sp ill antifreeze or cool ant on
the e xhau st sy stem o r hot e ngine part s. Under ce rtain condi -
tions , the ethylene glycol in engine cool ant can catch fire. _.,,

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
-Read the brake fluid level from the brake fluid reservoir
=> fig. 270. The brake fluid level must be between the
"MIN" and "MAX" markings.
The brake fluid reservoir is located at the rear partition of the engine
compartment on the left side~ page 310.
The fluid level may drop slightly after some time due to the auto ­
matic adjustment of the brake pads. This is not cause for alarm.
If the brake fluid level falls considerably below the "MIN" mark, the
brake warning/indicator light (U.S. models:
BRAKE , Canadian models:
«D> l will come on~ page 22 and~ page 30. Do not continue to
operate the vehicle. The complete brake system should be thor ­
oughly checked by an authorized Audi dealer or other qualified
facility and the cause corrected. If the brake fluid level is too low, the
brake warning/indicator light will illuminate. Contact an authorized
Audi dealer
immediately. •
Changing brake fluid
Have the brake fluid changed by an experienced techni­
cian.
Brake fluid absorbs moisture from the air. If the water content in the
brake fluid is too high, corrosion in the brake system may result
after a period of time. The boiling point of the brake fluid will also
decrease considerably and decrease braking performance.
Th erefore, the brake fluid must be changed
every two years. Always
use new brake fluid which conforms to Federal Motor Vehicle Stan­
dard "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficult to reach, therefore, we
recommend that you have the brake fluid changed by your autho­
rized
Audi dealer. Your dealer has the correct tools, the right brake
fluid and the know-how to do this for you.
& WARNING
• Brake fluid is poisonous. It must be stored only in the closed
original container out of the reach of children!
• Brake failure can result from old or inappropriate brake fluid .
Observe these precautions:
-Use only brake fluid that meets SAE specification
J 1703 and
conforms to Federal Motor Vehicle Standard 116. Always check
with your authorized Audi dealer to make sure you are using
the correct brake fluid. The correct type of brake fluid is also
indicated on the brake fluid reservoir .
- The brake fluid must be new. Heavy use of the brakes can
cause a vapor lock if the brake fluid is left in the system too
long. This can seriously affect the efficiency of the brakes as
well as your safety . This could result in an accident .
0 Note
Brake fluid will damage the paint of your vehicle.
~ For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special tools required and the necessary expertise, we recom ­
mend that you have the brake fluid changed by your authorized Audi
dealer. •
Battery
General information
Under normal operating conditions, the battery in your Audi does
not need any maintenance. With high outside temperatures or long
daily drives we recommend that you have the electrolyte level .,_

Checking and filling -
---------------------=----"=---------
checked by a service facility. The electrolyte level should also be
checked each time the battery is charged =>
page 323.
Have the battery checked when you take your vehicle in for service.
You are well advised to replace a battery that is older than 5 years.
With certain types of airbag deployment, the battery is discon­
nected from the vehicle electrical system for safety reasons=>.& in
"Repair, care and disposal of the airbags" on
page 234.
Disconnecting the battery terminals
Some vehicle functions (power window regulators, for example) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the battery terminals are connected again. To
prevent this, the battery should only be disconnected from the
vehicle electrical system when absolutely necessary for repairs .
Vehicles not driven for long periods If you do not drive your vehicle over a period of several days or
weeks, electrical components are gradually cut back or switched off.
This reduces energy consumption and maintains starting capability
over a longer period
=> page 276.
Be aware that when you unlock your vehicle, some of the conve ­
nience functions may not operate, such as the Convenience key*,
the remote control or the power seat adjustment. The convenience
functions will be available again when you turn on the ignition and
start the engine.
Winter operation During the winter months, battery capacity tends to decrease as
temperatures drop. This is because more power is also consumed
while starting, and the headlights, rear window defogger, etc., are
used more often.
Avoid unnecessary power consump tion, particularly in city traffic or
when traveling only short distances. Let your authorized Audi dealer
check the capacity of the vehicle battery before winter sets in
=> page 323. A well charged battery will not only prevent starting
problems when the weather is cold, but will also last longer.
[ i] Tips
If your vehicle is left standing for several weeks at extremely low
temperatures, the vehicle battery should be removed and stored
where it will not freeze. This will prevent it from being damaged and
having to be replaced.•
Working on the battery
Be especially careful when working on or near the battery.
Fig . 271 Luggage
compartment: Right·
side storage compart­
ment
Fig . 272 Luggage
compartment : Battery
The battery is located in the luggage compartment on the
right side behind a cover. Before you check anything in the
luggage compartment,
read and heed all WARNINGS=>& . .,_
Vehic le care I I irechnical data

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
& WARN ING (continued )
• Never drive fa ster than the speed for which the winter or other
tires in stalled on your vehi cle a re rated.
& WARNING
Always adjust your driving to the road and t raffic condit ions .
Never let the good acceleration of the winter tires and all -wheel
drive tempt you into tak ing extra risks. Always remember :
• When braking , an all -wheel drive vehicle handles in the same
way as a front drive vehicle .
• Drive carefully and reduce your speed on icy and slippery ro ads ,
even winter tires cannot help under bla ck ice conditions.
c£> For the sake of the environment
Use summer tires when weather conditions permit. They are
quieter, d o not wea r as qu ick ly a nd r educe fuel cons ump tio n.•
Snow chains
Sn ow chains may be fitte d only to th e fron t w hee ls, and o nly t o
certain tire sizes . Ask your authorized Audi dealer on which tire
s iz es snow c hains can be used .
If you are going to use snow cha ins , then you must instal l them on
the front wheels at least.
The snow chains must have low-pro file l inks and mus t n ot be thicker
than 0.53 inch ( 13.5 mm), including the lock.
Remove wheel cen ter c ove rs a nd trim discs be fore putti ng snow
chains on your vehic le~
0 . For safety reasons cover caps must
then be fitted ove r the wheel bo lts . These are avai lable from autho ­
rized Audi dealers.
& WARNING
Using the wrong snow chain s for your vehicle or installing them
incorrectly can in crease the risk of loss of control leading to
serious personal injury .
• Snow chains are available in different size s. Alway s make sure
to follo w the instructions pro vided by the snow chain manufac ­
turer.
• When dr iving with snow ch ains never drive faster than the
speed permitted for your specific snow chains .
• Always observe local regulations .
0 Note
• Remove snow chains before driving on roads not covered with
snow to av oid da maging t ires a nd weari ng the snow cha ins dow n
unnecessari ly.
• Snow cha ins, wh ic h come into d irect contact wit h the wheel rim ,
can scratch or damage it. Therefore, make sure that the snow chains
a re suitab ly cove red. Check the p osit io n of the snow cha ins a fter
driving a few yards and correct if neccessary. Follow the instructions
from t he s now cha in manufac turer w he n do ing so .
• I f the Adaptive Air Suspension should malfunction , do not
mo unt or us e snow chains becaus e th e veh icle will be extre m ely
l ow . If you do drive with snow chains on while the vehicle is at this
l evel, the s now c hai ns mig ht s ever ely da mag e th e wheel house and
other parts of the vehicle.
[ i ] Tips
Where snow chains are mandatory on certain roads, this norma lly
a lso app lies to veh ic les wi th A ll Wheel Drive .•