2010 AUDI S8 fuel cap

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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.
Safety first
& 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 Technical data

___ C_h_ e_c _k _i_n -=g :a,__ a_n_ d_ f_ i_ l _li _n _,g;._ __________________________________________ _
Fig. 244 Illustra tion
of principle 2: Markers
on oil dipstick
Before you check anything in the engine compartment,
always read and heed all WARNINGS => & in "Working in
the engine compartment" on
page 289.
Determining oil level
-Park your vehicle so that it is horizontally level.
- While at operating state temperature, briefly let the
engine run at idle and then shut it off.
- Wait approx . two minutes.
- Pull out the oil dipstick . Wipe off the oil dipstick with a
clean cloth, and slide it back in as far as it will go.
- Pull it back out and read off the oil level =>
page 293,
fig. 243 or=> fig . 244. Top off the engine oil, if applicable
=> page 294 .
Oil level within range @
-Do not add oil.
Oil level within range@
-You con add oil. Afterwords, the oil level should be within
range @.
Oil level within range©
You must add oil. Afterwards, the oil level should be
within range @.
The oil level needs to be checked at regular intervals. The best times
to do this are whenever you refuel and prior to long trips.
Depending on the way the vehicle is driven and the operating condi­
tions, oil consumpt ion can be up to 1 quart per 1.200 miles
(l liter
per 2 .000 km) . Consumpt ion may be higher with in the first 3.000
miles (5.000 km). •
Adding engine oil~
Fig. 245 Oil filler cap
location: 4.2 L 8-
cyllnder
Fig . 246 Oil filler cap
lo cat ion : 6.0 L 12 -
cyllnder .,_

___ T_ i_ r _e _s_ a_n_ d_ w_ h_ e_e_ l_ s _______________________________________________ _
Occ up ant loading and distribution for vehi cle normal load for various d esignated seating capacit ies
Designated seating capacity, num- Vehicle normal load , number of Occupant distribution in a nor­
mally loaded vehicle
ber of occupants occupants
4
5
Cold tire inflation pressure
2
3
2 in front
2 in front, 1 in back seat
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 252 Ti re pre ssure
l a bel : lo cate d eit he r o n
driver 's s ide B-pilla r or
in sid e t he fue l fill er
flap
TVIE' I IU COl.D 'nRI! MCUUM
PNIU DIMCNIIONII PMIIION Dtl "*lit A f:11101>
....
·-.. OIIICOUM
- KPA,. PSI
- KPA,. PSI
- KPA,. PSI
Fig. 2 53 Tire pre ssure
lab el
Ma inta in ing p roper tire pressure is one of the most important th ings
you can do to he lp avoid sudden tire fa ilure. Underinflated tires are a
ma jo r ca use of sudden t ire failure. Keep ing t ires a t the right pressu re
is a lso important for safe and responsive vehicle handling, tract ion,
bra king and loa d ca rry ing .
Tire pre ssures are particularly important
when the vehicle is be ing dr iven at higher speeds, and then espe­
cially when he avily loaded even within the permi ssible load·
carr ying capacities approved for your veh icle.
Th e recommended tire pressures for your Audi depend on the kind of
tires on your vehicle and the number of passengers and/or amount of luggage you will be transporting.
O n USA veh icles, the tire pressure label is lo cated on the drive r's side
8-pillar. On Canada vehicles, the t ire pressure label is located either
•
T ir e pressure ge nera lly refers to the amount of air in a t ire that it
needs it to do its job and safely carry the combined load of the entire
veh icle and i ts conten ts. Tir e pressure is measured in kilopascals
(kPa), the international measur ing unit and in pounds per square inch
(PSI) . Tire press ure is based in part on the veh icle 's design and load
limit -the greatest amount of weight that the vehicle can carry safe ly
and the t ire size . The proper tire pressure is frequently referred to as
the "recommended cold t ire inflation pressure." Air in the tires
expands when the ti re hea ts up because of i nterna l fr iction when it
flexes in use. The ti re p ressu re is highe r when the t ire has wa rmed up
than when it is "cold ." It is the inflation pressure in a "co ld" tire that
co unts . Therefo re, you should never let air out of a warm tire to
match "cold tire inflation pressure" recommendations . The t ires
would then be under inflated and could fail suddenly.
on the driver's side 8-pillar o r inside the fuel f iller flap. The ti re pres- ...

Tires and wheels Ill
----------------
sure label lists the recommended cold tire inflation pressures for the
vehicle at its maximum capacity weight and tires that were on your
vehicle at the time it was manufactured.
If you wish to improve comfort when operating the vehicle at
normal load (up to 3 occupants), you can adjust tire pressures to
those specified for normal vehicle load. Before operating the
vehicle at maximum load, you must increase the tire pressures to
those specified for maximum vehicle load~& .
Bear in mind that the tire pressure monitoring system* can only
mon itor the tire pressures you have stored . The system does not
recognize the load condition of your vehicle.
Th e effectiveness of the tire pressure monitoring system* will be
impaired if you store normal load pressures but then operate the
vehicle at its maximum load~.&, . See the
illustration
~ page 310, fig. 2 52 for the locat ion of the label
either on dr iver's side B-pillar or inside the fuel filler flap (color of the
actual label and exact location on the vehicle will vary slightly) .
Note that the following tab le is accurate at the time of going to press
and is subject to change. In the event of discrepancies , the tire pres­
sure label (On USA vehicles, the tire pressure label is located on the
dr ive r's side B -pillar . On Canada veh icles, the tire pressure label is
located either on the dr iver's s ide B-pillar or inside the fue l f ill er flap)
always takes precedence.
The table below lists the recommended cold t ire inflation pressures
for the Audi model covered by your Owner's Literature at the vehicle's
capacity weight and the tire sizes insta lled on the respective models
as original equipment, or as a factory option .
Engine Tire designation Tire pressure front Tire pressure rear
(displace- normal load full load normal load
full load
ment in conditiona> condition conditiona> condition
liter)
PSI kPA PSI kPA
a -cylinder 255/45 Rla 99H All Season
33 230 36 250 30 210 35 240
4.2
255/40 Rl9 l0OV XL All Season 36 250 39 270 33 38 260
255/40 Rl9 l00Y XL High Performance 33 230 36 250 30 210 35 240
265/35 R20 99V XL High Performance 35 240 38 260 32 220 36 250
275/35 R20 102V XL High Performance 38 260 41 280 35 240 44 300
a-cylinder 255/45 Rla 99H All Season 33 230 36 30 210 35 240
4.2 L
255/40 Rl9 l00V XL All Season 36 250 39 270 33 230 38 260
255/40 R19 l00Y XL High Performance 33 230 36 250 30 35 240
275/35 R20 102V XL High Performance 38 260 41 280 35 240 44 300
Safety first Vehicle care Technical data

Tires and wheels -________________ Effll
& WARNING
• Incorr ect tire pressures and /or underinflation can lead to a
s erious or fatal accident .
• Incor rect tire pressures and /or unde rinflation cause increased
tire wear and can aff ect the handling of the vehicle .
• Incorrect tire pressures and /or underinflation can also lead to
sudden tire failure , including a blowout and sudden deflation,
caus ing loss of vehicle cont rol. •
Checking tire pressure
The correct tire pressure for the tires orig in a lly installed
on your vehicle is listed on the tire pressure label located
either on driver 's sid e 8-pillar or inside the fuel filler flap.
The recommended tire pressures a re on the tire p ressure labe l and in
t he table => page 310, "Cold tire infla tion pressure ".This means that
the pressure must be chec ked and adjusted when the tire has not
bee n dr iven for more tha n a coup le of m iles (k ilomete rs) at low
speeds dur ing t he previous three ho urs . Air in t he tires expands when
t he tire hea ts up as a r esu lt of in te rna l fr ic tion as it flexes in use. The
tire pressure is higher when the tire has warmed up than when it is
" ld "
co .
It is the inflation pressu re in a "cold" ti re that counts. Therefore, yo u
sho uld never let air out of a warm tire to matc h "Cold tire inflation
pressure" recommendations=>
page 310. The t ires would then be
underinflated and co uld fail sudden ly.
Th e tire press ure label on your Audi lists the re comme nded cold t ire
inflation pressures at max imum capacity for t he new, origina l equip­
ment tire s that were on yo ur vehi cle at t he time it was m anufactu red .
For the location of the label=>
page 310 , fig. 252.
M ost tires lose air nat urally
over time. They can also lose some air if
you d rive
over a potho le or hi t a curb while pa rking. It is usually not
Safety first
poss ible to see whether the radial t ires used today are underinflated
ju st by loo king at th em.
Th erefore, be sure to check t ire pressures a t least once a month and
always before going on a long trip. Make sure to take the n umber of
people a nd t he amount of luggage into account whe n ad justi ng tire
pressure for a tr ip -
even one that you would not consider to be
" long. " See =>
page 314, "Ti res and vehicle load limits" fo r more
important information.
Always use an acc urate t ire pressure ga uge when chec king and
adjust ing inf lation press ures. Check all of the tires and be sure not to
forget the spare tire . If the press ure in any tire is too hig h when the
t ir e is "cold," let air out of the t ire s lowly w it h the edge of the t ire
gauge and keep chec king the pressure u nti l yo u reach the pressure
t ha t is co rre ct for the load (passenge rs an d luggage) a nd kind of
dr iv ing you plan to do.
If the pressure in any ti re is too low, note t he difference betwee n th e
pressure in the co ld tire and the pressure you need and add the a ir
tha t you need to reach the correct p ressu re fo r th e ve hicle load
(passengers a nd luggage) fo r th e tires on yo ur vehicle as listed on the
on your vehicle and in this man ua l and the kind of driving you p lan to
do .
Never e xceed the max imum inflation pressure l isted on the tire
s idewall for any reason.
Remember that the vehicle manufacture r, not the t ire manufacturer,
de termines the correct tire press ure for the t ires on your vehicle.
It is i mport ant to che ck the t ire pressure when t he ti res a re cold.
• Read the required t ire pressure from the t ire pressure label. On
US A veh icles, the tire pressu re labe l is loca ted on the d river's si de B ­
pillar . On Canada vehicles, the tire pressure label is located either on
t he drive r's side B-pillar or inside the fuel fille r flap.
• Turn the
valve stem cap counter -clockw ise to remove it from the
tire
valve.
• Place the air press ure gauge on the valve. ..,.
Vehicle care Technical data

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
• The tire pr ess ure s sho uld o nly be c hecke d an d adjusted wh en the
t ire s ar e cold . Th e slightly rais ed pr ess ure s of war m tir es mu st not b e
r e d uced .
• Adjust th e tire p re ss ur e to t he load yo u a re ca rr yin g.
• Reinstall the valve stem cap on the valve.
When should I check the tire pressure?
The correct tire press ure is especia lly imp orta nt at high speeds . T he
pr essu re s hou ld t here fo re b e ch ec ked at least onc e a mo nth an d
always be fore sta rting a jo ur ney. Do not fo rget to check the tire pres­
su re for th e s pare wheel~
page 33 4.
When should I adjust the tire pressures?
Adjus t the tire pr essur e to th e load yo u are carrying . A ft e r changi ng a
w heel
or replac ing w heels yo u have to adjust the ti re pressures on all
w heels. In addi tio n, yo u mu st then stor e the new tir e press ures in the
tire pressu re monitoring system*~
page 326.
& WARNING
Incorrect tire pressures and/or underinflation can lead sudden tire
failure, los s of control, collision, serious personal injury or even
death.
• When the warning symbol appears in the instrument
cluster , stop and inspect the tires.
• Incorrect tire pressure and/or underinflation can cause
increased tire wear and can affect the handling of the vehicle and
stopping ability.
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehicle control.
• The dr iver is responsible for the correct tire pressures for all
tires on the vehicle. The applicable pressure values are located on
a sticker on the driver 's side 8-pillar or on the inside of the fuel
filler flap .
& WARNING (co ntinued )
• Only when all tires on the vehicle are filled to the correct pres­
sure, the tire pressure monitoring* system can work correctly .
• The use of incorrect tire pressure values can lead to accidents or
other damage. Therefore it is essential that the driver observe the
specified tire pressure values for the tires and the correct pres­
sures for the function of the tire pressure monitoring system*.
• Always inflate tires to the recommended and correct tire pres­
sure before driving off .
• Driving with underinflated tires bend more , letting them get
too hot resulting in tread separation, sudden tire failure and loss
of control.
• Excessive speed and/overloading can cause heat build-up,
sudden tire failure and loss of control.
• If the tire pressure is too low or too high, the tires will wear
prematurely and the vehicle will not handle well.
• If the tire is not flat and you do not have to change a wheel
immediately, drive at reduced speed to the nearest service station
to check the tire pressure and add ai r as required.
0 Note
Dr iv ing witho ut valve stem caps can caus e damage to the tire valves.
T o preven t this, alw ays m ake s ure th at facto ry installe d valv e st em
caps o n all whee ls a re securely mo unted o n the valve.
Under infla ted tires will a lso inc rease t he f uel cons umption .•
Tires and vehicle load limits
T here a re lim its to the amount of load or we ight that any veh icle a nd
a ny t ire c an car ry. A veh icle th at is overloade d wi ll not ha n dle we ll an d ...

Tires and wheels -________________ fWII
is mor e difficult to s top . Ov erloadin g can not only lead to loss of
ve hicle cont rol , but can a lso dam ag e im por tant parts of th e veh icl e
and can lead to s udden t ire failur e, incl uding a blowout and sudd en
deflation that can cause the vehicle to c ras h.
You r saf ety an d that o f your p assenger s also d ep end s on maki ng sur e
tha t load limits a re not exceeded. Vehi cle load in cludes everyb ody
a nd every thing in and on the ve hicl e. The se l oad l imi ts are tech nicall y
referred to as the ve hicle's
Gross Vehicle Weight Rating ("GVW R").
Th e "GVWR " includes the we ight of the basic vehicle, all factory
ins talled accessories, a f ull tank of fue l, o il, coola nt and o ther flu ids
plus maxim um loa d. The maxim um loa d i ncludes the number of
pass eng ers that t he v ehicle is inten ded to ca rry ("s eating capa city")
w it h an ass ume d we ight of 150 lbs (68 kg) for each passenger at a
desig nated se ating pos it io n and t he tota l weig ht o f any luggage in
the vehicle . If you tow a tra iler , the weight of t he trailer hitch and t he
t o ngue we ig ht of th e load ed t rail er m ust be i ncluded as p art o f the
vehicle load.
Th e
Gross Axle Weight Rating ("GAW R") is the ma ximu m load that
can be a pplied at each of t he veh icle's two axles.
T he Gross Vehicle Weight Rati ng and the Gross Axle Weight Rat ing
a re list ed on the sa fe ty c ompl iance sticke r label loca te d ei the r on the
driver's side B-pilla r or on the inside of the fuel fille r flap . Your Audi
h as 5 se ating posit ion s, 2 i n the fro nt and 3 in t he re ar for to tal
seating capacity of 5. Ve hicles wit h power ind iv id ual rear s eats* have
4 se ating posi tions, 2 in the front and 2 i n the rea r for tot al sea ting
capacity of 4. Each seat ing pos ition has a safety belt =>
page 197,
"Safety be lts" .
Th e fa ct that th ere is an upper li mit to your ve hicle's Gross Vehicle
We ight Rating means that the total weight o f whatever is being
c ar ried in the vehicle ( including the we igh t o f a t rail er hit ch and the
tongue weight of the loa ded tra ile r) is limited. The mo re passengers
in the vehi cle or p assen gers wh o are he avie r than t he stand ard
we ights assum ed mean t hat less weight ca n be carried as luggage.
Safety first
The tire pressure label on yo ur Aud i also lis ts the maxim um combined
we ight of all of the o ccupant s and lug gage o r oth er c argo that t he
vehicle ca n car ry . For the location o f the label=>
pag e 310, fig. 252 .
& 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. •
Determining correct load limit
Use the example below to calculate the
total weight of the passengers and luggage
or other things that you plan to transport so
that you can make sure that your vehicle
will not be overloaded. .,_
Vehicle care Technical data

________________________________________________ T_i_re _ s_ a _ n_d_ w_ h_ e_ e_l_s __ _
0
-
©
®
@
-
@
U.S . DOT tire identification number
Audi Original tire
Sever snow conditions
Tire ply composition and materials used
Treadwear, traction and temperature grades Ma ximum perm issible 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 characteris­
tics of the vehicle and can make a major contribution to good road
holding and safe handling when in good condition and properly
inflated =>
&.
We recommend that all work on tires and wheels be performed by an
authorized Audi dealer. They are familiar with recommended proce­
dures and have the necessary special tools and spare parts as well as
the proper facilities for disposing of the old tires.
Authorized Audi dealers have the necessary information about tech­
nical requirements for installing or changing tires and rims.
Replacing tires and wheels
Tires should be replaced at least in pairs and not individually (for
example both front tires or both rear tires together).
Be sure to read and heed the information to the tire pressure moni­
toring system* =>
page 320.
Always buy replacement radial tires that have the same specifications
as the tires approved for your vehicle by Audi. Replacement tires must
always have the same load rating specification as the original equip­
ment or approved optional tires listed in the table=>
page 310.
Audi-approved specification tires are specially matched to your
vehicle and its load limits, and can contribute to the important road-
Safety first
holding, driving characteristics, and safety of the vehicle. The table
(=>
page 310) lists specifications of the tires approved for the Audi
models covered by your Owner's Literature.
The tire pressure label located either on driver's side B-pillar or inside
the fuel filler flap (=>
page 310, fig. 253) lists the specifications of
the original equipment tires installed on your vehicle at the time it
was manufactured.
Federal law requires tire manufacturers to place standardized infor­
mation on the sidewall of all tires=>
page 318, fig. 256. This infor­
mation identifies and describes the fundamental characteristics, the
quality grade of the tire and also provides a tire identification number
for safety standard certification and in case of a recall.
Tire specifications
Knowledge of tire specifications makes it easier to choose the correct
tires. Radial tires have the tire specifications marked on the sidewall,
for example:
255/45 R 18 99 H
This contains the following information:
P Indicates the tire is for passenger cars (where applicable)
255 Nominal tire width in mm of the tire from sidewall edge to side-
wall 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 letter code
XL (or "xl", "EXTRA LOAD" or "RF") indicates that the tire is a "Rein­
forced" or an "Extra Load" tire
M+S (or "M/5") Indicates that the tire has some mud and snow capa­
bility
The tires could also have the information of direction of rotation
=>
page 306 .
Vehicle care Technical data