warning AUDI S8 2010 Owners Manual

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& WARNING (conti nu ed )
• Protect your f ace, hand s and arms from e scaping fluid and
s team by covering the cap with a larg e, thick rag.
• Turn the cap slowl y and ver y ca refull y in a counter-clockwise
direct ion while applying light, downward pre ssure on the top of
the cap.
• To avoid being burned , do not spill antifreeze or coolant on the
exhaust system or hot engine part s. Under certain conditions, the
ethylene glycol in engine coolant can catch fire.
0 Note
Do not add any type of radiator leak sealant to yo ur vehicle's engine
coo lant. Adding radiator repair fluid may adverse ly affect the func­
t ion and perfo rmance of your cooling system and could result 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
unde r a cover. •
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the eng ine compartment,
always read and heed all WARNINGS~ & in "Working in
t h e e ngine compar tment" on
page 289 .
-Tur n off the eng ine.
- Let t he engi ne cool down. -
Place a t hick rag over the coolant ex pansio n tank
~ page 297, fig . 247 and carefully twis t the ca p counte r­
clockw ise
~ & .
- Add coo lant.
- Tw ist t he cap on agai n
tightly.
Replacement eng ine coolant must conform to exact specificat ions
=> p age 2 96, "Coolan t". Even in an emergency, if coolan t ad di tive
Gl2 ++, Gl2+ or Gl2 is not available, do
not use a d ifferent addit ive.
Use plain water instead until you can get the correct additive a nd can
restore the correct ratio . This s hou ld be done as soon as possible .
If you have lost a conside rable amount of coolant , then you sho uld
add co ld a ntifree ze a nd cold water only when t he e ngine is cold .
Always use
new engine coo lant when refilling.
Do not fill coolant above t he "MAX" mark. Excess coo lant wi ll be
forced out t hrough the p ressure relief va lve in the cap w hen the
eng ine becomes hot.
& WARNING
• The cooling system is under pressure and can get very hot.
Reduce the risk of scalding from hot coolant by following these
steps.
- Turn off the engine and allow it to cool down .
- Protect your face , hands and arms from escaping fluid and
steam by covering the cap with a large, thick rag.
- Turn the cap slowly and very carefully in a counter-clockwise
direction while applying light, downward pressure on the top
of the cap.
- To avoid being burned , do not spill antifreeze or coolant on
the exh aust system or hot engine parts. Under certain condi-
tions, the ethylene gly col in engine coolant can catch fire. .,

Checking and filling ------------------------------- ---=.:..:..=.:=~..:::..:.....:..:.;__ ___ _::,______,.J
& WARNING (co ntinued )
• Antifreeze is pois onous. Alway s store antifreeze in its original
container and well out of the r each of children.
• If you drain the coolant , it must be caught and safely stored in
a proper container clearly marked "poi son ".
0 Note
• Coolant poll utes the environment and could cause an engine fire .
Excess coolant w ill be forced out throug h the pressure re lief valve in
t he cap when the e ng ine becomes hot .
• If, in an emergency, o nly wate r ca n be adde d, the correct ratio
between water and antifreeze=>
page 296 must be restored as soon
as possib le.
W For the sake of the environment
Dra ined coolant shou ld not be reused. A lways dispose of used coo lant
w hile observ ing a ll enviro nment al regul ations . •
Radiator fan
The radiator fan switches on automatically by itself
T he radi ator fa n is d riven by the engine via th e V-bel t. The v iscous
clutch regu lates the speed of the fan accord ing to the temperature of
t he coolant.
An auxiliary e lectr ic rad iator fan* sw itches on and off depend ing o n
coo la nt tempe rat ur e and othe r vehicle ope ra ting condi tions .
After you switch the engi ne off, the auxilia ry fa n can cont inue r unning
for up to 10 minutes - even w ith the ignition off . It can even switch on
agai n lat er by itse lf => & , if
• the tempe rature of the e ngine coolant rises due to the heat build ­
up from the eng ine in t he engi ne comp art ment, or
Vehicle OP-eration
• the engine compartment heats up because the veh icle is parked in
in tense s unlight.
& WARNING
• To reduce the ri sk of personal injury never touch the radiator
fan.
• The auxiliary electri c fan is temperature controlled and can
switch on suddenly even when the engine is not running .
• The auxiliary radiator fan switches on automatically when the
engine coolant reaches a certain temperature and will cont inue to
run until the coolant temperature drops .•
Brake fluid
Checking brake fluid level
T h e b rake fluid l evel can be ch ecked with a quick glance.
-w ;:;
Fig. 24 8 En gine
compa rtme nt: Brak e
f luid re se rv oi r
Be fore you chec k anyt hin g in the engine compartment,
always read and heed all WARNINGS~ & in "Working in
t h e engine compartm ent" on
page 289 . .,_
Vehicle care Do-it-yourselt service iTechnical data

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- Read the brake fluid level from the brake fluid reservoir
=> fig. 248 . T he brake fluid level mus t be between the
" M IN" and "MAX" markings.
The br ake fl uid re se rvoir is loc ated at the rear pa rt iti on of the engine
compartment on the left side~ page 290.
T he f lu id level may drop slightly after some time due to the auto­
matic adjus tment of t he b rake pads. This is not caus e for alarm.
If the brake flu id leve l falls considerably below the "MIN" mark, t he
br ak e wa rning/ind ic ator lig ht ( U.S . model s:
BRAKE , Can adi an mod els:
«D> ) will come on~ page 20 and~ page 28. Do not continue to
operate the vehicle . The comple te brake system sho uld be thoro ughly
checked by an author ized A udi dealer or ot her qualified facility and
t he ca use correcte d. If the b rake fl uid leve l is too low, the bra ke
wa rning/in dicator light will illu mi nate . Con tact an au thorized Aud i
dealer
immediately .•
Changing brake fluid
H ave the brake flui d changed by an ex perienc ed techni­
cian.
Brake flui d abso rbs mois ture from t he a ir . If t he wa ter con ten t in the
brake fl uid is too hig h, corros io n in the b rake system may res ult afte r
a period of time . The boiling po int o f the bra ke fl uid will also decrease
cons iderab ly and decrease brak ing perfo rmance.
The refore, the brake fl uid m ust be changed
every two years . Always
use new bra ke fluid w hich conforms to Fede ral Motor Veh icle St an­
dard "FMVSS 116 DOT 4" .
Th e b rake fl uid reservoi r ca n be diffi cult to rea ch, there fore, we
recommend that you have the bra ke fluid c hanged by your author ized
Audi dealer. Your dea ler has the correct tools, the right b rake fl uid
and the know-how to do t his 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 flu id.
Observe these pre cautions:
- Use only brake fluid that meets SAE specification
J 1703 and
conforms to Federal Motor Vehicle Standard 116. Always che ck
with your authorized Audi dealer to make sure you are us ing
the correct brake fluid. The correct type of brake fluid i s 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 . Thi s 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 ve hicle .
~ For the sake of the environment
Because of the prob lem of proper disposal of brake fl uid as we ll as
the spec ia l too ls req uired and the necessary expe rtise, we recom ­
m en d that you have t he brake fl uid changed by your autho rized Audi
dea ler .•
Battery
General information
Under normal operat ing condit ions, the battery in your Aud i does not
nee d any m ain ten ance. Wi th high outs ide temper atures o r long d aily
dr ives we recommend that yo u have the elect rolyte level checked by .,_

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The battery is located in the luggage compa rtment on the
right side beh ind a cover. Before you check anything in the
luggage compa rtmen t, read and heed all WARNINGS=>& .
- To open the side sto rag e com part me nt, turn the tw o pins
@ =>fig . 24 9 to th e vert ical position .
The positive( +) battery termina l is p rotected by a plastic cov er. This
cover must be removed to access the positive( +) terminal when
c onnect ing jumpe r cab les to sta rt the engine.
Always heed the safety warnings, when working on the vehicle
bat tery or the vehicle e lect ric al system to p revent injury .
The following WARNINGS are very important when
working on the battery:
Always heed the following WARNING SYMBOLS and safety pre­ cautions when working on the battery.
-
®
Always wear eye protection.
Battery acid contain s sulfuric acid. Always wear
gloves and eye protection .
No
- sparks
- flames
- smoking .
When a battery is charged, it p roduces hydrogen
gas which is explosive and could cause personal
injury .
Always keep the battery well out of reach of chil­
dren .
& WARNING
Whenever working on the battery or on the electrical system,
there i s the ri sk of injury, a ccident and even fire. Read and heed
the following WARNINGS:
• Alway s wear eye protection . Do not let batt ery acid or any lead
part icles get on your skin or clothing. Shie ld your eyes. Explosive
ga se s can cause blindnes s or other in jury.
• Battery acid contains sulfuric acid. Sulfuric acid can cause
blindne ss and severe burns .
- Always wear gloves and eye protection . Do not tilt the
battery becau se acid could leak out of the ventilation open­
i ngs.
- If you get battery acid in your eyes or on your skin, immedi­
a tely rinse with cold water for several minutes and get medical
attention .
- If you should ingest any battery acid , see k medical attention
immediately.
• Do not expose the battery to an open flame, elect ric sparks or
an open light .
• Do not smoke.
• Do not interchange the positive and negative cables.
• When working on the battery, be sure not to short-circuit the
term inals with tools or other metal objects. This would cause the
battery to heat up very quickly, which could lead to damage or
e x plos ion and personal injury.
• When a battery is charged, it produce s hydrogen ga s wh ich is
e xplos ive and could cause pe rsonal inju ry.
• Alway s keep the battery well out of the reach of children .
• Before work is done on the ele ctrical system , disconnect the
negative ground cable.
• Before performing any work on the electrical sy stem , switch
off the engine and ignition as well as any electrical equipment.
The negative cable on the battery mu st be disconnected. If you are
~

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& WARNING (co ntinued )
just going to replace a light bulb , then it is enough to switch off
the lights .
• Before disconnecting the battery , switch off the anti-theft
alarm system! Otherwise you will set off the alarm.
• When disconne cting the battery, first disconnect the negat ive
cable and then the po sitive cable.
• Before reconnecting the b attery, make sure all electrical
consumer s are sw itched off. Reconnect the positiv e cable fir st and
then the negative cable . Never inte rchange the cables -this could
start a fire!
• Never charge a frozen or a thawed-out battery.
It could
explode! If a battery has frozen, then it must be replaced . A
di scharged batter y can freeze over at 32 °F (0 °C ).
• Make sure the vent hose is always attached to the opening on
the side of the battery .
• Never use batteries which are damaged. There is the danger of
an explosion! Alway s replace a damaged battery.
& WARNING
California Proposition 65 Warning:
• Battery posts , terminal s and related accessories contain lead
and lead compounds, chemicals known to the State of California
to cause cancer and reproductive problems. Wash hands after
handling.
0 Note
• Do not disconnec t the vehicle batte ry when t he ignit ion is
switched on o r when the engine is running, otherwise, you will
d amage e le ctro nic c ompone nts in t he ele ctrica l sys tem.
Safety first
• If your ve hicle is go ing to sta nd for a long per iod of time w it h out
bein g driven, protec t th e battery fro m "freezi ng", o therw ise i t wi ll be
damaged and will then have to be replaced .•
Battery charging
Sta rting t he e ng in e req uires a well c harged battery.
Always read and heed all WARNINGS b elo w =:> & and=:> &
i n "W orki ng on t he batt ery" o n
page 3 01.
- Turn off th e igni tio n and all electr ica l co nsum ers.
- Make su re the area is well vent ilated w hen you charge the
batte ry .
- Attach the red (posi tive
(B) c la m p of the charging equip­
me nt to the posit ive te rmin al o f th e bat tery and t he b lac k
( n eg at ive(:)) clam p to t he jumper term inal.
- Only now plug t he m ain s lead for the c harg ing e quip ment
i n to t he wa ll outlet a nd tu rn it on=:> &.
- Make sure the charging rate is not over 30 amps/14.8
Volt.
- When the b attery is fully c harg ed: Turn t he ch arging
equ ip m ent off and remo ve t he mains l ead fr om the wall
ou tlet.
- Now remove the clamp s for the cha rging eq uipment .
A discharged ba ttery can freeze a t temperat ures of on ly O 0C. Allow a
frozen batte ry to thaw comp letely before attempting to charge it
=> & . However, we recomme nd not usin g a thawed battery aga in
because the battery casing can be cracke d due to ice formation and
c a n l eak battery a cid. .,._
Vehicle care Technical data

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Battery charging (Maximum charging rate of 30
amps/14.8 Volt )
When charging at /ow voltages (e.g . w ith a trickle charger ), th e
battery cab les do not have to be disconnected first. The batte ry caps
should
not be opened when cha rging a ba ttery .
It is not necessary to remove the battery from the luggage compart­
ment, and i t is also no t ne cess ary to dis connect the cables.
Fast charging the battery (charging rate above 14.8
Volts)
For technical reasons do not use a battery cha rger that uses voltage
grea te r t han 14 .8 Vol ts to ch arge yo ur vehicle's ba tte ry .
& WARNING
Charging a battery can be dangerou s.
• Always follow the operating instructions provided by the
battery charger manufacturer when charging your battery .
• Never charge a frozen battery . It may explode be cause of g as
trapped in the ice . Allow a frozen battery to thaw out first.
• Do not reu se batteries which were frozen . The battery h ousing
may have cracked and weakened when the battery froze.
• Charge the battery in a well ventilated area. Keep away from
open flame o r elect rical spark. Do not smoke. Hydrogen gas gener ­
ated by the battery i s explosive.
• To reduce the danger of e xplosion , never connect or disconnect
c harger cable s while the charger is operating.
• Fast charg ing a battery is dangerous and should only be
attempted by a competent technician with the proper equipment .
• Battery acid that may spill during charging should be wa shed
off with a so lution of warm water and baking soda to neutralize
the acid.
0 Note
N ever use a fast cha rger as a booster to s tart the eng ine. This w ill seri­
ously damage sensitive e lectronic components , such as control units,
re lays, ra dio, etc., as well as t he ba ttery cha rger. •
Battery replacement
The new battery must have the s ame specifications and
dim ensions as the original equipment b atte ry.
Inte lligent e nergy ma nagement in yo ur vehicle is responsib le for
distr ibuting the elect rical energy throughout your vehicle
~ page 258. T he intelligent energy management sys tem will keep
the eng ine battery charged better than vehicles without this system .
T o m ake s ure the addi tional e lectr ic al energy is available o nce aga in
after you have changed the battery, we recommend that you install
b atter ies of the same type and manuf actur e only ( the same as t hose
installed at the t ime you r vehi cle was delive red) . Specifications are
liste d on the ba ttery ho using. Your a uthorized Audi dealer w ill then
code the battery management control unit.
Th e new batte ry must have the same capacity, volta ge (12 vo lts),
ampe rage, const ruct io n and p lug sealing .
When installing the battery, make s ure the ign ition and all electrical
c ons umers are turned off.
0 Note
Mak e sure the vent ilat io n hose o n the side o f th e battery is
connec ted, otherwise fumes or battery acid can leak o ut.
<£> For the sake of the environment
Because of the prob lem of proper disposal of a ba ttery, we recom­
mend you r auth o rized Audi dealer change the ba ttery for you.
Ba tte ries con tain sulfu ric acid and lead and must a lways be disp osed
~

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of properly in compliance with all environmental regulations .
Disposing of vehicle batter ies improperly is
very dangerous to the
environment .•
Windshield/headlight washer
container
F ig . 251 E ngine
compa rtme nt: W ind·
sh iel d and h eadlight
w asher flu id con tainer
The washer fluid container is marked wi th the symbol ~ on
its cap.
- Before you check anything in the engine compartment,
always read and heed all WARNINGS~ & in "Working
in the engine compartment" on page
289.
- Lift the filler cap tongue to add washer fluid. You can fill
the container to the top.
- Press the cap back onto the filler neck a fter filling the
container.
You can find the reservoir capacity i n the table in~ page 360 .
To p revent lime residue from bui ld in g up on the spray jets, use
distilled wate r when refilling . Always add a glass cleaner solution
(with frost p rotection in the winter) .
Vehicle OP-eration
0 Note
Do not mix engine coo lant antifreeze o r any other additives to fill up
the w indshield wash er reservoir .•
Vehicle care Do-it-yourselt service iTechnical data

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Tires and wheels
Tires
General notes
Tires may be the least appreciated and most abused
parts of a motor vehicle.
T ir es may be the least apprec iated and most abused pa rts of a moto r
vehicle. Tires are, however, one of the most important parts of a
veh icle, parti cularly conside ring the comparative ly small patch of
rubber on eac h tire that assu res that all- important co ntact between
you , your ve hicle and the road .
Ma inta in ing t he correct t ire pressu re, making s ure that your veh icle
and i ts tires do not have to carry more weight than they can safely
hand le, avoid ing damage from road ha za rds and reg ula rly inspect ing
tires for damage incl ud ing c uts, s lashes irregular wea r and overall
condi tion are the mos t important th ings that you can do to help avoi d
sudden tire fa ilure includ ing t read separation and blowouts .
Avoiding damage
If you have to drive over a curb or sim ilar obstacle, drive very s lowly
and as close as poss ible at a right angle to the cu rb .
Always keep chemicals including grease, oil , gasoline and bra ke fl uid
o ff the t ires .
Inspect the ti res regularly for damage (cuts, crac ks o r bl ist ers, e tc .).
Remove any foreign bodies embed ded in the trea ds.
Storing tires
M ar k tires when yo u remove t hem to indica te the d irect ion of rota ­
tion . This ens ures yo u to be able to mo unt them co rrectly whe n you
re insta ll them.
Wh en r emoved, t he wheels or tires s hould be sto red in a c ool, dry and
preferably da rk p lace. Sto
re tires in a ver tica l pos it ion if they a re not mounted on rims, in a
hor izonta l position if they are mo unted on r ims.
New tires
N ew tires have to be bro ken in~ & .
Th e tread dep th of new tires may v ary, ac cor ding to t he type an d
make of t ire and the tread pattern.
Hidden damage
Dama ge to t ires and rims is often not readi ly visible . If yo u notice
unusu al v ib rat ion o r the veh icle pulls to one sid e, t his may i ndicate
that one of the tires has been damaged. The tires must be c hecke d
i m medi ately by an a uthor ized A udi deale r or quali fied w or ksh op .
Unidirectional tires
A u nidirectional tire can be identified by arrows on the sidewall, that
point in the d irect io n the tire is des igned to rotate. Yo u m ust follow
t he s peci fied dire ction of ro tation . T his is nece ssary so th at t hese
tires can develop the ir optimum c haracter istics regarding gr ip, road
noise, we ar and hy dropl aning res istance. For more informa tion
~page 341 .
& WARNING
New tires or tires that are old , worn or damaged cannot provide
maximum control and braking ability.
• New tires tend to be slippery and must be broken in. To reduce
the risk of losing control, a collision and serious personal injuries, drive with special care for the first 350 miles (560 km) .
• Driving with worn or damaged tires can lead to loss of control,
sudden tire failure , including a blowout and sudden deflation ,
crashes and serious personal injuries. Have worn or damaged tires
replaced immediately. .,_

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& WARNING (co ntinued )
• Tires age even if they are not be ing used and can fail suddenly ,
e specially at high speeds . Tires that are more than 6 year s old can
only be used in an emergency and then with special care and at low
s peed .
Glossary of tire and loading terminology
Accessory weight
means the combined weigh t (in excess of those sta ndard items wh ich
may be replaced) of automatic transmission, power steer ing, power
bra kes, powe r win dows, power sea ts, radio, and heate r, to the exte nt
that these items are available as factory-insta lled equipment
(whet her i ns ta lled or no t).
Aspect ratio
means the r atio of t he he ight to t he widt h of the t ire in percent.
N umbers of 55 or lower indicate a low sidewa ll for improved steer ing
res ponse and bet ter over all h andling on dry p avemen t.
Bead
means the part of the t ire that is made of stee l wi res, w rapped or
re in forced by ply cords and that is shaped to fit the rim.
Bead separation
means a brea kdown of the bond between components in the bead.
Cord
means the st rands forming the plies in the ti re.
Safety first
& W ARNING (co ntinued )
• Never mount u sed tires on your vehicle if you are not sure of
their "previous history ." Old u sed tires may have been damaged
eventhoughthedamagecannotbeseenthatcanleadtosudden
tire failure and loss of vehicle control.
• If you notice unusual vibr ation or if the vehicle pulls to one side
when driving, always stop as soon as it is safe to do so and check
the wheels and tires for damage. •
Cold tire inflation pressure
means the t ire pressu re recom mended by the vehicle manufa ctu rer
for a tire of a desig nate d size that has not been driven for more than
a couple of m iles ( kilomete rs) a t low speeds in the t hree hour per io d
before the tire pressu re is measured or adjusted.
Curb weight
means the weight of a moto r vehicle wit h standard equipment
incl uding the max imum ca pac it y of fue l, o il, and coo lan t, air condi ­
tioning and additiona l weig ht of optional eq uipment.
Extra load tire
means a tire design to operate at higher loads and at higher inflat ion
pressures than t he co rresponding sta ndard t ire. Extra load tires may
be identif ied as "XL", "xl", "EXTRA LOAD", or "RF" on the sidewa ll.
Gross Axle Weight Rating ( "GAWR ")
means the loa d-carrying capac ity of a sing le ax le system, measure d at
the t ire-grou nd interfaces.
Gross Vehicle Weight Rating ("GVWR")
mea ns the maximum tota l loaded we ig ht of the vehicle .
Vehicle care Technical data

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Sidewall
means that portion of a tire between the tread and bead.
Speed rating (letter code)
means the speed at which a tire is designed to be driven for extended
periods of time. The ratings range from 93 mph (150 km/h) to 186
mph (298 km/h)=>
page 320. You may not find this information on
all tires because it is not required by law .
The speed rating letter code, where applicable, is molded on the tire
sidewall and indicates the max imum permissible road speeds=>
& in
"Winter tires" on
page 323.
Tire pressure monitoring system*
means a system that detects when one or more of a vehicle's tires are
underinflated and illuminates a low tire pressure warning telltale.
Tread
means that portion of a tire that comes into contact with the road.
Tread separation
means pulling away of the tread from the tire carcass .
Treadwear indicators (TWI)
means the projections within the principal grooves designed to give a
visual indication of the degrees of wear of the tread. See=>
page 317,
"Tread Wear Ind icator (TWI)" for more information on measuring
tire wear.
Uniform Tire Quality Grading
is a tir e information system developed by the United States National
Highway Traffic Safety Administration (NHTSA) that is designed to
help buyers make relative comparisons among tires. The UTQG is not
a safety rating and not a guarantee that a tire will last for a prescribed
number of miles (kilometers) or perform in a certain way. It simp ly
gives tire buyers additional information to combine with other
considerations, such as price, brand loyalty and dealer recommenda­
tions. Under UTQG, tires are graded by the tire manufacturers in three
Safety first
areas: treadwear, traction, and temperature resistance . The UTQG
information on the tires, molded into the sidewalls.
U.S. DOT Tire Identification Number (TIN)
This is the tire's "serial number" It begins with the letters "DO T" and
indicates that the tire meets all federal standards. The next two
numbers or letters indicate the plant where it was manufac tured, and
the last four numbers represent the week and year of manufacture.
For example,
DOT ... 2209 ...
means that the tire was produced in the 22nd week of 2009 . The
other numbers are ma rket ing codes that may or may not be used by
the tire manufacturer . Th is information is used to contact consumers
if a tire defect requires a recall.
Vehicle capacity weight
means the rated cargo and luggage load plus 150 lbs. (68 kilograms)
times the vehicle's total seating capacity as listed on the label located
either on the driver's side B-pillar or on the inside of the fu e l filler
flap.
Vehicle maximum load on the tire
means that load on an individual tire that is determined by distrib­
ut ing to each axle its share of the maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individual tire that is determined by distrib­
uting to each axle its share of the curb weight, accessory weight, and
normal occupant weight (distributed in accordance with tab le below
=> page 310) and dividing by two. ._
Vehicle care Technical data