2010 AUDI S3 check engine light

Cleaning and protection -
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•
Safety belts
Only well-maintained safety belts work reliably when
needed.
-Keep belts clean.
- For cleaning, use a mild soap and water solution. Let
belts dry thoroughly and away from direct sunlight.
- Do not allow inertia reel safety belts to retract before
they are completely dry.
- Check the condition of your safety belts
regularly.
Heavily soiled safety belts may not retract properly.
& WARNING
Damaged safety belts can break in a crash .
• Anything that might damage your safety belts could mean that
you and your passengers would not be adequately protected in an
accident.
• Safety belt performance depends on correct installation. Never
remove belts from the vehicle to clean them .
• Do not use chemical cleaning agents, bleach or dyes. They have
corrosive properties which weaken the webbing.
• When cleaning your safety belts, inspect them for damage. If
you discover damage, see your authorized Audi dealer.
• Always read and heed all WARNINGS and other information
=:, page 204. •
Engine compartment
Be especially careful when cleaning the engine compart­
ment.
Always switch off the ignition before cleaning the engine =:> &.
Plenum panel
Remove leaves from the plenum panel in front of the windshield
under the engine hood. This prevents the water drain holes from
becoming blocked, and it prevents debris from entering the vehicle
interior through the heating and ventilation ducts .
Corrosion protection
The engine compartment and transmission have been corrosion­
protected at the factory.
Good anti-corrosion treatment is very important, particularly in the
winter. If the vehicle is frequently driven on salt treated roads, the
entire engine compartment and plenum panel should be thor ­
oughly cleaned at the end of winter and retreated to prevent salt
damage. At the same time, the underside of the vehicle should be
washed as well.
If the engine compartment is cleaned at any time with grease
removing solutions
3l, or if you have the engine washed , the anti­
corrosion treatment is almost always removed as well . It is therefore
essential to have a long-lasting corrosion protection reapplied to all
surfaces, seams, joints and components in the engine compart ­
ment.
& WARNING
Be aware: The engine compartment of any motor vehicle is a
potentially hazardous area.
• Before working in the engine compartment, be sure to read the
information
=:> page 215 . .,_
31 Use only the correct cleaning solutions. Never use gasoline or diesel fuel.
Vehicle care I t •

Checking and filling -
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Checking and filling
Engine hood
Releasing the engine hood
The engine hood is released from inside the vehicle.
- Open the driver's door .
Fig. 162 Driver's side
footwell: engine hood
release lever
- Pull the release lever on the left under the instrument
panel => fig. 162 in direction of the arrow.
The hood pops up slightly under spring pressure. •
Opening the engine hood
Fig. 163 Engine hood
release lever
Before opening the engine hood , make sure that the wind­
shield wipers are folded flat against the windshield. Other­
wise, they could damage the paint on the hood.
Pull the release lever=> fig. 163 in the direction indicated
by the arrow. This release the hook under the hood.
- Open the hood all the way.
& WARNING
Hot engine coolant can burn you!
• 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. •
Vehicle care I I irechnical data

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
Under some circumstances the engine oil should even be changed
more frequently. Change oil more often if you drive mostly short
distances, operate the vehicle in dusty areas or mostly under stop ­
and -go traffic conditions, or when you use your vehicle where
temperatures stay below freezing point for long periods .
Detergent additives in the oil will make fresh oil look dark after the
engine has been running for a short time. This is normal and is not
a reason to change the oil more often than recommended .
Damage or malfunctions due to lack of maintenance
It is essential that you change your oi l at the recommended intervals
using only engine oil that complies with Audi oil standard
VW 502 00 (vehicles with gasoline engine) or VW 507 00 (vehicles
with diesel engine). Your Limited New Vehicle Warranty does not
cover damage or malfunctions due to failure to follow recom­
mended maintenance and use requirements as set forth in the Audi
Owner's Manual and Warranty
& Maintenance booklet. Your dealer
will have to deny warranty coverage unless you present to the dealer proof in the form of Service or Repair Orders that all scheduled
maintenance was performed in a timely manner .•
Engine oil consumption
The engine in your vehicle depends on an adequate
amount of oil to lubricate and cool all of its moving parts.
In order to provide effective lubrication and cooling of interna l
engine components, all internal combustion engines consume a
certain amount of oil. Oil consumption varies from engine to engine
and may change significant ly over the life of the engine. Typically,
engines with a specified break -in period (see=>
page 195) consume
more oil during the break-in period than they consume after oil
consumption has stabilized.
Under normal conditions, the rate of oil consumption depends on
the quality and viscosity of the oil, the RPM (revolutions per minute)
at which the engine is operated, the ambient temperature and road
conditions. Further factors are the amount of oil dilution from water condensation or fuel residue and the oxidation level of the oil. As
any
engine is subject to wear as mileage builds up, the oil consump­
tion may increase over time until replacement of worn components
may become necessary .
With all these variables coming into play, no standard rate of oi l
consumption can be established or specified. There is no alternative
to regular and frequent checking of the oil level, see
Note.
If the yellow engine oil level warning symbol in the instrument
cluster lights up, you should check the oil level as soon as
possible
with the oil dipstick=> page 229. Top off the oi l at your
earliest convenience =>
page 230.
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS
=> &. in "Work ing in the engine
compartment" on
page 224.
0 Note
Driving with an insufficient oil level is likely to cause severe damage
to the engine.
[ i ] Tips
• The oil pressure warning display~ is not an indicator of the oil
level. Do not rely on it. Instead, check the oil level in your engine at
regular intervals , preferably each time you refuel, and always before
going on a long trip.
• If you have the impression your engine consumes excessive
amounts of oil, we recommend that you consu lt your authorized
Audi dealer to have the cause of your concern properly diagnosed .
Keep in mind that the accurate measurement of oil consumption
requires great care and may take some time. Your authorized Audi
dealer has instructions about how to measure oil consumption
accurately. •

Checking and filling -
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0 Note
• Before winter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions. This is especially important if you live in a region where
the winter is extremely cold. If necessary, increase the proportion of
coolant additive to 60%.
• When adding coolant additive to your cooling system,
remember:
-We recommend using only coolant additive G12+ + (check the
label) for your vehicle. This coolant additive is available at autho­
rized Audi dealers. Other types of antifreeze can significantly
reduce corrosion protection . The resulting corrosion can cause a
loss of coolant and serious engine damage .
• Do not add any type of radiator leak sealant to your vehicle's
engine coolant. Adding radiator repair fluid may adversely affect the
function and performance of your cooling system and cou ld result
in damage not covered by your New Vehicle Limited Warranty .•
Checking the engine coolant level
The engine coolant level can be checked with a quick
glance.
Fig . 169 Engine
compartment : coolant
expansion tank
Before you check anything in the engine compartment,
always read and heed all WARNINGS==> & in "Working in
the engine compartment" on
page 224.
Turn off the ignition .
Read the engine coolant level from the coolant expan­
sion tank==> fig. 169. With a cold engine, the coolant level
should be between the "min" and "max" markings. When
the engine is warm, the level may be slightly above the
" max" marking .
The location of the coolant expansion tank can be seen in the
engine compartment illustration=>
page 225.
To obtain an accurate reading, the engine must be switched off .
The expansion tank in your vehicle is equipped with an electric
coolant level sensor.
When the coolant level is too low, the warning light in the Auto­
Check System =>
page 30will blink until you add coolant and the
level has been restored to normal. Even though there is an electric
coolant level sensor, we still recommend you check the coolant level
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling system. In the event
of coolant loss, the cooling system should be inspected immedi­
ately by your authorized Audi dealer. It is not enough merely to add
coolant.
In a
sealed system, losses can occur only if the boiling point of the
coolant is exceeded as a result of overheating.
0 Note
Do not add any type of radiator leak sea lant to your vehicle's engine
coolant. Adding radiator repair fluid may adversely affect the tune- _..
Vehicle care I I Technical data

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
tion and performance of your cooling system and could resu lt in
d am age not co vered by yo ur Ne w Vehicle Li mited Warranty .•
Adding coolant
B e very caref ul whe n addin g engine c oo lant.
Before you check a nything in the e ngine compartmen t,
always read and heed all WARNINGS=> & in "Work ing in
the en gine compartmen t" on
pa ge 224.
- Turn off the engine.
- Le t the engin e coo l down.
Place a thi ck ra g o ver th e c oolan t expansio n ta nk
=> pa ge 233, fi g. 1 69 an d carefully twi st th e cap coun te r­
cl ockwi se
=> &.
- Add cool ant.
- Twist the cap on aga in
tightly.
Replacement engine coolant must conform to exact specifications
~ page 232, "Coolant". Even in a n eme rge ncy, if co olant add it ive
G 12++. G12+ or G 12 is not availab le, do
not use a diffe rent additive.
Use plain water instead unt il you ca n get the c orrect additive and
can restore the correct ratio . This should be done as soon as
possible.
If you have lost a considerable amount of coo lant, then you should
add co ld antifreeze and cold water only when the engine is cold.
A lways use
new e n gin e c oolan t wh en refi llin g.
Do not fi ll coo lant above the "MAX" mark . Excess coolant will be
f o rced ou t through the pressure re lief va lve in the cap when the
engine becomes hot.
& WARNING
• The cooling system is under pressure and can get very hot .
Redu ce 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 e scaping 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 e xhaust system o r hot engine parts . Under certain condi ­
tions , the ethylene glycol in engine coolant can catch fire.
• Antifreeze is poisonous . Always store antifreeze in its original
container and well out of the rea ch of children.
• If you drain the coolant , it must be caught and safely stored in
a proper container clearly marked "poison".
0 Note
• Coo la n t po llutes t he environ ment and cou ld cause a n engine
fire . Excess coolant will be forced out through the pressure re lief
va lve in t he cap when t he eng in e b ecomes hot .
• I f, in an emergency, on ly water can be added, the correct ratio
be tween wa ter and antifree ze~
page 232 mus t be restore d as soon
as possib le .
'£> For the sake of the environment
D rained coolant should not be reused. Always d ispose of used
coo la nt whi le observing all e nvi ro n men tal reg ulat ions .•

Checking and filling -
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Radiator fan
The radiator fa n switches on au toma tically by i tself.
T he e lectric radiator fan is control led bythermoswitches that switch
on and off depending on coolan t and engine compar tm ent temper ­
atures .
An auxiliary e lectric radiator fan * switches on and off depending on
coolant temperature and other vehicle operation conditions.
After switching off the engine , the auxiliary fan -even with the igni ­
tio n off -ca n co ntinue runni ng for u p to 10 minutes. It can even
switch on again later by itself=>&, if
• the temperat ure of the engine coolant rises due to the heat
build -up from the engine in the engine compartment, or
• t he engine co mpart men t heats up because the vehicle is parked
in intense sunlight.
& WARNING
• To reduce the risk of personal injury never tou ch the r ad iator
fan .
• The auxiliary electric fan is temperature controlled and can
switch on suddenly even when the engine i s not running .
• The auxiliary radiator fan switches on automatically when the
engine cool ant reache s a certain temperature and will continue to
run until the coolant temperature drop s. •
Brake fluid
Checking brake fluid level
The bra ke flu id l evel can be che cke d wi th a q uick gla nce.
Fig . 17 0 Engine
co mpartment : brake
fluid re ser vo ir
Be fore yo u check anythin g in the e ng ine compar tm ent,
always read and heed all WARNINGS=> & in "Working in
t h e eng ine compartment" on
page 224.
Read t he brake fl uid lev el from t he brake flui d res ervoir .
T he b rak e fluid l eve l must b e between the
"MI N" and
"M AX" markings => fig. 170.
The brake f luid reservoir is located at the rear pa rtit ion of the engine
compartment on the left side=> page 225.
T he fluid leve l may drop slightly after some time due to the auto ­
ma tic adjustment o f the brake pads. Th is is not cause for alarm .
I f the brake flu id leve l falls considerably below the "MIN" mark, the
brake warning/indicator light (U.S . models :
BRAKE, Canadian models:
ID ) will come on=> page 15 and=> page 30. Do not continue to
operate the vehic le . The complete brake system should be thor ­
oughly checked by an au thorized Audi dealer or other qualified
facility and the cause corrected. If the brake fluid leve l is too low, the .,,_
Vehicle care I I irechnical data

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
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. 171 E ng ine
co mp artm ent (4 -
c yli nder engin e):
Bat tery w it h cove r"
The battery is located in the engine compartment~ fig. 171 and is
nearly
mai nten ance-fr ee .
The condition of the ba ttery is checked in the framework o f the
inspection. We recommend replacing batteries that are o lder than 5
years. .,

___ A_ l..:,. p _ h_ a_ b_e _t_ic _ a_l _in _ d_e_ x ____________________________________________ _
Engine
4-cylinder diesel (140 hp) ... ... ... . 226
4 -cylinder gaso line (200 hpl .... .... 225
Coolant .. ...... ..... .... .... .... 232
Hood ...... ....... .... ... .... ... 223
Starting .................... 106, 107
Starting with jumper cables .. .... . 285
Stopping ... .. .... .... .... .... .. 108
Engine compartment . .... .... ...... . 225
Safety instructions . . . . . . . . . . . . . . . 224
Working in the engine compartment 224
Engine coolant system ... .... ....... 232
Adding coolant .... ....... ..... .. 234
Checking coolant level . . . . . . . . . . . . 233
Checking the engine coolant level .. 233
Radiator fan . . . . . . . . . . . . . . . . . . . . . 235
Engine coolant temperature
Gauge .... .... .... .... ... .... .... . 9
Engine cooling system Malfunction ........ ... .. .... .... . 30
Engine data ........ ............... . 296
Engine fault Warning light . . . . . . . . . . . . . . . . . . . . . 13
Engine hood Closing . .... ... .. .... .... ...... . 224
Release lever ...... .... .... ...... 223
Re leasing and opening ......... ... 223
Engine ma lfunction (diesel engine)
Warning light . . . . . . . . . . . . . . . . . . . . . 13
Engine oil .. ............. .. .... .... 226
Adding . .... ... .. .... ...... ... .. 230
Additives . . . . . . . . . . . . . . . . . . . . . . . 230
Changing ............... ........ 230 Checking the engine oil
level ... .... 229
Diesel engine .. ..... .. ...... ..... 231
Indications and conditions requiring extra checking ... ....... ...... ...... 229
Oil consumption ................. 228
Oil grades . .... ........ .... ...... 226
Recommended oil check intervals .. 229
Specification and viscosity ...... .. 226
Specifications Diesel engine ....... 231
Specifications gaso line engine ..... 226
Engine oi l level ................... 32, 33
Engine oi l pressure (malfunction) .. .... 31
Engine oil sensor defective .. ... .... ... 33
Engine speed limitation .. ...... .... ... 32
Environment Break -in period . . . . . . . . . . . . . . . . . . 195
Catalytic converter . . . . . . . . . . . . . . . 196
Diesel particulate filter ............ 197
Disposing of your vehic le battery ... 237
Driving at high speeds . . . . . . . . . . . . 198
Driving to minimize pollution and noise .
198
Fuel ............................ 220
Fuel economy . . . . . . . . . . . . . . . . . . . 198
Leaks under your vehicle . .... ... .. 224
Letting the vehicle stand and warm up ..
198
Proper disposal of drained brake fluid
236
Proper disposa l of drained engine
coo lant .. .... ... .... .... .... ... 234
Proper disposa l of dra ined engine oil 230
Recycling used eng ine oil ...... ... 230 Unleaded fuel
..... ... .... .... .. . 217
What should I do with an old battery?
237
EPC
See Electronic power control . . . . . . . . 13
ESP
See Electronic Stability Program .... 188
Event Data Recorder (EDRJ ............ 188
Expansion tank 233
F
Fahrenheit
Switching between Fahrenheit and Centigrade . ...... .............. 101
Fan Adjusting the fan speed .. ...... ... 101
Climate controls ...... .... ....... 101
Radiator ........ .... ... .. .... ... 235
Fastening Booster seats . . . . . . . . . . . . . . . . . . . . 175
Convertible chi ld safety seats ...... 173
Infant seats
Fastening eyes
Flat ti re 172
.. .... .... .... ... .. ... 82
Changing .. .... .... ... ........ .. 270
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . 130
Fog lights, front .. .... .... ........... 55
Folding master key with remote control . 36
Foot pedals ........................ 130
For the sake of the environment
Gaso line fumes and the environment 220
Letting your engine warm up . ..... . 107