2009 AUDI S3 light

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brake warning/indicator light will illuminate . Contact an authorized
Audi dealer
i m medi at ely.•
Changing brake fluid
Have the brake fluid changed by an experienced techni­
cian.
Brake fluid absorbs moisture from the ai r. 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 wil l also
decrease considerably and decrease braking performance .
Therefore, the brake fluid must be changed
e ver y two years. Always
use new brake fluid which conforms to Federa l Motor Vehicle Stan ­
dard "FMVSS 116 DOT 4" .
The brake fluid reservoir can be difficu lt to reach , therefore, we
recommend that you have the brake fluid changed by your autho­
rized
Audi d ealer. Your dealer has the correct tools, the right brake
fluid and the know-how to do this for you.
& WARNING
• Bra ke fluid i s poisonous . It mu st be stored on ly in the close d
ori ginal container out of the rea ch of children!
• Bra ke fa ilure can result from old or inappropri ate brake fluid .
Observe the se pre caution s:
- Use o nly brake fluid that meets SAE spe cifi ca tion
J 170 3 and
c onform s to Fed era l Moto r Vehic le Sta nda rd 116 . Always c heck
w ith your authori zed Audi de aler to m ake sure you are using
the correct brake fluid. The corr ect type of brake fluid i s als o
indi cated o n the br ake fl uid reser vo ir.
- The br ake flu id mu st be ne w. Hea vy use of the brake s can
c au se a vap or lo ck if the bra ke fluid i s left in the system too
long. Thi s can seriou sly affect the efficienc y of the brake s as
we ll as your safet y. Thi s co uld re su lt in an acci dent .
0 Note
Brake fluid wi ll damage the paint of your vehicle .
<£' For the sake of the environment
Because o f the problem of prope r disposal of brake flu id as we ll as
the special tools required and the necessary expertise, we recom ­
mend that you have the brake fluid changed by your authorized Audi
dea ler. •
Battery
General information
All w ork on the battery requires technical knowledge!
Fi g. 177 E ng ine
co mp artm ent (4 -
c yli nder engin e):
Bat tery w it h cove r"

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N
~ a:. 00 m
F ig . 178 Battery in the
lugg ag e co mpartme nt
(6-c ylind er eng ine !:
Ba tter y cove r remo ved
T he condition of the battery is checked in the framework of the
inspection . We recommend rep lacing bat teries that are older than 5
years .
Disconnecting the battery
Some vehic le functions (power window regu lators, 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
veh icle electr ical system if absolutely necessary.
V ehicle with 4 -cylind er engin e
The battery is located in the engine compartment~ page 236,
fig. 177 and is nearly maintenance -free.
Vehi cle s with 6 -cylinder engine
The bat tery is loca ted in the luggage compartmen t=:> fig . 178,
under a bolted-down cover
4151 • The battery is maintenan ce -free .
Your ve hicle may be optionally equipped with a special battery,
41 Wor k on the battery of vehicles with 6-cy linder motor requires professional
dexterity and special tools! The bolts on the battery cover can only be re­
m oved w ith a s pecial tool. Because the batte ry is ma in tenance -free, it is
genera lly not necessary to access it.
51 The cover is used for safety reasons in an acc ident, the vehicle must not be
driven without the cover bolted in place correctly.
known as a. gel battery* . When this battery is replaced, it must be
replaced wi th a or iginal bat tery o f th e same type.
Vehicles not dri ven for long periods and short-distance
operation
The battery can a lso become discharged with the vehicle stationary
by id ling current consumers .
Valid for vehicles with 4 -cylinder
engine :
When the vehic le is stationary (planned event) during the
cold time of the year, you sh ould remove the battery an d store it in
a nonfreezing area. This way you prevent that the battery "freezes"
and thereby is destroyed . During the
warmer time of the year it is
suff icient to disconnect the negative terminal from the battery .
Occasiona lly charge even a disconnected battery .
Valid for veh icles
with 6 -cylinder engine:
All wor k on the ba ttery should be per formed
by an authorized dealership.
Winter op eration
During the winter months, battery capacity tends to decrease as
temperatures drop. This is because more power is a lso consumed
while starting, and the headlights, rear window defogger, etc., are
use d more often .
Avoid unnecessary power consumption, particularly in city traffic or
wh en trave ling on ly shor t distances . Let you r au thor ize d Audi dea ler
check the capacity of the vehicle battery before winter sets in
~ page 240 . A well charged battery will not on ly prevent sta rting
problems when the weather is cold, but wi ll a lso last longer .
Replacing battery
The new battery must have the same capacity , vo ltage (12 volts),
a m perage, con struction and plug sea ling, as t he origina l battery.
Specifications are listed on the battery housing. Batteries specially
developed by Audi fulfill the maintenance, output, and safety
requirements.
When installing the battery , make sure the ignition and all electrical
co nsumers are switche d off ~
0. ..,
Vehicle care I I irechnical data

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•
& W ARNING (continu ed )
• Always wear eye protection. Do not let battery acid or any lead
particles get on your skin or clothing . Shield your eyes. Explosive
gases can cause blindness or other injury !
• Battery acid contains sulfuric acid . Sulfuric ac id can cause
blindness and severe burns .
- Always wear gloves and eye protection. Do not tilt the
battery because acid could leak out of the ventilation openings.
- If you get battery acid in your eyes or on your skin , immedi ­
ately rinse with cold water for several minutes and get medical
attention .
- If you should ingest any battery acid , seek medical attention
immediately .
• Do not expose the battery to an open flame , electric sparks or
an open l ight .
• Do not smoke.
• Do not interchange the positive and negative cables .
• When working on the batte ry , be sure not to short -circuit the
terminals with tools or other metal objects . This would cause the
battery to heat up very quickly , whi ch could lead to damage or
explosion and personal injury .
• When a battery is charged , it produces hydrogen gas which is
explosive and could cause personal injury .
• Always keep the battery well out of the reach of children .
• Before work is done on the electrical system, disconnect the
negat ive ground cable .
• Before performing any work on the electrical system , switch off
the engine and ignition as well as any electrical equipment . The
negative cable on the battery must be disconnected . If you are just
going to replace a light bulb , then it is enough to switch off the
lights.
• Before disconnecting the battery , sw itch off the anti-theft
alarm sy stem! Otherwise you will set off the alarm.
& W ARNING (continued )
• When disconnecting the battery, first disconnect the negative
cable and then the positive cable.
• Before reconnecting the battery , make sure all electrical
consumers are switched off. Reconnect the positive cable first and
then the negative cable . Never interchange 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
discharged battery can freeze over at 32 °F (0 °CI.
• Make sure the vent hose is always atta ched to the opening on
the side of the battery.
• Never use batteries which are damaged . There is the danger of
an explosion! Always replace a damaged battery .
& WARNING
California Proposition 65 Warning:
• Battery posts , terminals and related accessories contain lead
and lead compounds , chemicals known to the State of Californi a
to cause cancer and reproductive problems . Wash hands after
handling.
0 Note
• D o not d iscon nect the veh ic le bat tery w hen the ign it io n i s
switched on or when the engine is ru nning, otherwise, you wi ll
da mag e ele ctro nic c ompo nents in the e lectr ical system.
• Appl ies to vehic les with 4 -cylinde r engine: When working on the
eng ine, protec t th e batter y hous ing from ultrav iolet ( UV) rays by not
parking the vehicle in direct sun light .
• If y our veh icl e is goi ng to sta nd for a lo ng period o f time with out
being dr iven, protect the battery from "freezing", otherwise it will
b e dama ged and w ill t hen ha ve to be replaced .•
Vehicle care
I t •

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Applies to vehicles: w ith 4-cy linder engine
Charging of battery (4 -cylinder engine)
All work on the battery requires technical knowledge!
A charged battery ensures good star ting performance. A
discha rged battery can
freeze at temperatures of only O °C.
A thawed battery must be replaced, as the battery housing may be cracked due to freez ing and could therefore leak
acid .
-Always read and heed all WARNINGS below=> & and
=> & in "Working on the battery" on
page 238.
-Sw itch off the ignit ion and all e lectr ica l co nsumers .
- Make s ure the a rea is we ll ven tilated when y ou c harge
the batte ry.
- Connec t cha rger cab les.
Charger cable s mu st alway s be
conne cted POSITIVE
G) to POSITIVE G) and NEGATIVE Q
to NEGATIVE Q.
- Switch on the charger.
- Make sure the charging rate is not over 6 amps.
- Turn off th e ch arge r=> & .
- Disconnect the c harger cables.
- Connect both battery cables to the battery if necessary -
first plus, then minus .
The battery must not be opened!=> 0 in "General information" on
page 236.
It is not necessary to remove the battery from the engine compart ­
ment, and it is also not necessary to disconnect the cables .
Normally, a battery shou ld be charged at no more than 10 percent
of its rated capacity. For example, a charging
current of 4.5 amps would be used on a
b attery rated at 45 Ah. Rated capacity of the battery in your vehic le
is listed on the battery housing.
The battery caps should
not be opened when charging a battery .
& WARNING
Charging a battery c an be dangerou s.
• Never ch ar ge a fro zen batt ery. It m ay ex pl ode be cause of g as
trapped in the i ce. Allow a fro zen battery to thaw out fir st.
• Do not reu se b atteries whic h w ere fro zen . The batter y housing
ma y hav e cra cked and weakened when the batter y fro ze.
• Charge the b atter y in a w ell vent ila ted area . K eep away from
open flame or e le ctric al s p a rk . Do not smoke . Hydrogen g as gener ­
a ted by t he b attery i s ex plo sive .
• To redu ce the dang er of e xplo sion , never connect o r di sconnect
c h arger cables while t he ch arger is operating .
• Fas t ch ar ging a batte ry is dang erou s and should only be
att empted by a comp etent techni cian with the proper equipment .
• Batter y ac id that m ay spill durin g ch arging should be wa shed
off with a solution of warm water and baking soda to neutr alize
the acid.
0 Note
Never use a fast charger as a booster to start the engine. This will
seriously damage sensitive electronic components, such as control
units, re lays, radio, etc ., as well as the battery charger.
[ i ] T ips
The veh icle battery must not be charged with a standard sma ll
charger that plugs into the cigarette lighter or out let. •

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Ap plies t o vehicles: w ith 6 -cylin d er engine
Charging of battery 6 -cylinder engine )
All work on the battery requires specialized knowledge!
The battery is maintenance-free and is inspected regu ­
larly as part of vehicle service.
If starting problems occur because the battery charge is too low,
this may indicate a defective battery. In this case we recommend
having a qualified workshop inspect and charge the battery or
replace it if necessary. A discharged battery can
freeze at tempera ­
tures of only O °C. A thawed battery must be replaced, as the battery
housing may be cracked due to freezing and could therefore leak
acid.
Charging the battery
Battery charging should be performed by a qualified workshop,
since batteries employing a special technology are used which
require current-limited constant voltage charging.
0 Note
The vehicle may be optionally equipped with a gel battery, which can only be charged at a constant current-limited voltage.
• To prevent damage to the battery and the electronics system, a
gel battery that is connected must under no circumstances be
charged with a quick charger.
[ i] Tips
The vehicle battery must not be charged with a standard small
charger that plugs into the cigarette lighter or outlet. •
Windshield washer container
Using plain water is not adequate for filling the wind­
shield washer system.
Fig . 179 Engine
compartment : wind­
shield washer fluid
container
The windshield washer fluid container is located on the
right side of the engine compartment~ fig. 179. The
washer fluid container is marked with the symbol %Pis 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 225.
-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 after filling the
container.
You can find the reservoir capacity in the table in~ page 300.
To prevent lime residue from building up on the spray jets, use
distilled water when refilling. Always add a glass cleaner solution
(with frost protection in the winter}. .,._
Vehicle care I I irechnical data

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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
monitor the tire pressures you have stored. The system does not
recognize the load condition of your vehicle.
The 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 illustrat ion=>
page 247, fig. 180 for the location of the label
either on driver'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 table is accurate at the time of going to
press and is subject to change . In the event of discrepancies, the tire
pressure label (on USA vehicles, the tire pressure label is loc ated on
driver's side B-pillar; on Canada vehicles, the tire pressure label is
loca ted either on the driver's side B-pillar or inside the fue l filler
flap.I always takes precedence.
The table below lists the recommended cold tire inflation pressures
for the Audi model covered by your Owner's Literature at the
vehicle's capacity weight and the tire sizes installed on the respec­
tive models as original equipment, or as a factory option.
Engine
(displace ­
ment in
liter)
Tire designation Tire pressure front
Tire pressure rear
4-cylinder
2.0
205/55 R16 91 H All Season
225/45 R17 94H XL All Season
225/45 R17 94W High Performance
225/45 R17 94Y XL High Performance
225/40 R18 92H XL All Season
225/40 R18 92Y XL High Performance
Compact spare wheel T125/70 R18 normal load
condition (up to
3 occupants)
PSI
36 250
38 260
35 240
35 240
38 260
38 260
60 420
full load
condition
kPA
39 270
39 270
38 260
36 250
41 280
41 280
60 420
normal load
full load
condition (up
condition to 3 occupants)
kPA kPA
30 210
38 260
32 220 38 260
30 210
36 250
30 210
35 240
35 240 41 280
35 240 41 280
60 420
60 420

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Tire pressure monitoring system*
Applies to vehicles: with tire pressu re monitoring system
General notes ' J
Each tire, including the spare (if provided), should be checked
monthly when cold and inflated to the inflation pressure recom ­
mended by the vehicle manufacturer on the vehicle placard or tire
inflation pressure label. (If your vehicle has t ires of a d ifferent size
than the size indicated on the vehicle placard or tire inflation pres­
sure label, you should determine the proper tire inflation pressure
for those ti res.)
As an added safety feature, your vehicle has been equipped with a
tire pressure monitoring system (TPMS) that i lluminates a low tire
pressure tellta le when one or more of your tires is significantly
under-inflated. Accord ingly, when the low tire pressure telltale illu­
minates, you shou ld stop and check your tires as soon as possible,
and inflate them to the proper pressure. Driving on a significantly
under-inflated tire causes the tire to overheat and can lead to tire
failure . Under -inflat ion also reduces fuel efficiency and t ire tread
life, and may affect the vehic le's handling and stopping ability.
Please note that the TPMS is not a substitute for proper tire mainte ­
nance, and it is the driver's responsibi lity to maintain correct tire
pressure, even if under -inflation has not reached the level to trigger
il luminat ion of the TPMS low tire pressure te lltale.
Your vehicle has also been equipped with a TPMS ma lfunction indi­
cator to indicate when the system is not operating proper ly . The
TPMS malfunction indicator is combined with the low tire pressure
telltale. When the system detects a malfunction, the tellta le wi ll
flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists .
When the ma lfunction indicator is illuminated, the system may not
be able to detect or signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of reasons, including the insta
llation of replacement or alternate tires or wheels on the
vehic le that prevent the TPMS from functioning properly. Always
check the TPMS malfunction tellta le after replac ing one or more
tires or whee ls on your vehicle to ensure that the replacement or
a lternate tires and wheels a llow the TPMS t o continue to funct ion
properly. •
Applies to vehicles: with tire pressur e monitoring system
Introduction
The tire pressure monitoring system monitors air pressure
in all four road wheels while the vehicle is moving.
As soon as the tire p ressure monitoring system senses a significant
loss of air pressure in one or severa l tires, text messages and ye llow
sy mbo ls appear in the instrument cluster display to alert the driver.
The warning light in the instrument cluster comes on when the
tire is significantly underinflated
=> page 13 .
Th e warning light l also i lluminates in the case of a system
malfunction.
Be aware tha t tire pressure is a lso dependent on the temperature of
the tire . For every 18 °F (1 O °C) increase in tire temperature, tire pres ­
sure increases by about 1.5 psi (0 .1 ba r). The tire warms up while the
vehic le is moving and tire pressure rises. So you should adjust tire
pressure on ly when they are
cold, when the temperature of the tires
is roughly the same as the ambient air temperature.
I n order to keep the tire pressure monitoring system properly ca li­
b rated, tire pressure on all four tires shou ld be checked a t regu lar
interva ls, adjusted if necessary, and saved in the proper setting
(reco mmended pressure) :::>
page 266.
The tire pressure is shown either on the driver's side 8 -pi llar or on
the inside of the fuel fi ller flap. _..

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•
& WARNING
• When the t ire pres sure monitoring sy stem warning light is l it ,
one or more of your tire s is significantly underinflated . You should
stop and che ck your tires as soon as possible , and inflate them to
the proper pres sure as ind icated on the vehicle's tire pressure
label :::::,
page 247 . Driving on a signifi cantly unde rinflated tire
causes the tire to overheat and can lead to tire failure. Underinfla­
tion also is likely to impair the vehicle's handling and stopping ability .
• Do not adju st tire pressure when tire temperature is e xcess ive.
This could lead to serious tire damage and even cause the tire to
burst , with the additional dan ger of an accident.
W For the sake of the environment
D riving with u nder inflated tires r educes fue l effi ciency and ti re
tread life.
[ i J Tip s
• Each tire, including the spare , should be checked monthly when
t he tempe rat ure of the t ires is a bout t he sa me as amb ient a ir
temperature and set to the recommended inflation pressure as
speci fied o n the ti re pre ssure label :::::,
page 247.
• The factory supplied spare whee l is equipped with a sensor for
t he ti re press ure m onit ori ng sys te m. As long as the spare w hee l is
not mounted, the t ire pressure of this tire wil l not be monitored .
• T he tire pressure mon itori ng system help s t he d river mo nitor ti re
pressures, but the driver is stil l responsible for maintaining the
c orrect tire press ure.
• T ire pressure must only be adjusted when the temperature of the
ti res is abou t th e sam e as ambie nt air te mperatu re.
• When t ires a re replaced, the sen so rs and valves shou ld not be
e xcha nged . T he va lve co re, nut, va lv e sea ling and sea l was her (replacement kit) needs to be replaced
. If necessary, the valve and
t he wheel electr onics have to be rep laced.
• I f you should put different whee ls and tires on your vehic le (e.g.
win ter w hee ls a nd tires), y ou must be certa in tha t the whee ls and
tires are compat ible with the tire pressure monitoring system .
Otherwise the sys te m will r egiste r a ma lfunc tion and a fau lt
message will be displayed . For more information, contact your
au thorized A udi dea le r.
• Adjust the tire pressure and store the pressure in the tire pres ­
su re moni tor ing sys tem to t he loa d you are carrying.
• F or Dec laration of Comp liance to United States FCC and Industry
Cana da regula tions :::::,
page 307 . •
A pplies to veh ic les : w ith tir e pressu re mon itor ing system
Significant loss of air pressure j'
Th e yellow symb ol app ear s i n the event o f a sig ni ficant
Jo ss of a ir pr es su re.
Fig . 185 Di sp lay :
yellow symbol with message
I f th e warning ligh t in the ins trumen t clu ste r com es o n
a nd t hen the s ymb ol appea rs in t he dis pla y~ fig. 1 85,
pre ssure in at least o ne tire is t oo l ow.
S to p drivi ng as soo n a s possib le wit h out e nda nge rin g
y o urs elf a nd other dr ivers on t he road. ._
Vehicle care I t •