2010 AUDI S3 check engine

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Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger transpor­
tation.
If you plan to tow a trailer, please remember that the additional load
wi ll affect durability, economy and performance.
Trai ler towing not on ly p laces more stress on the vehicle, it a lso ca lls
for more concentration from the driver.
For this reasons, always fo llow the operating and driving instruc ­
tions provided and use common sense. •
Technical requirements
Traile r hit ch
Use a weight -carrying hitch conforming to the gross trailer weight.
The hitch must be suitab le for your vehicle and tra iler and must be
mounted secure ly on the vehicle's chassis at a
technically sound
location . Use only a trailer hitch w ith removable ball mount. A lways
check with the trai ler hitch manufacturer to make sure that you are
using the correct hitch .
Do not use a bumper hit ch .
The hitch must be installed in such a way that it does not interfere
w ith the impact-absorbing bumper system . No modifications
should be made to the vehicle exhaust and brake systems. From
time to time, check that all hitch mount ing bolts remain securely
fastened.
When you are not towing a trailer, remove the trailer hitch ball
mount. This prevents the hitch from causing damage should your
vehic le be struck from behind
=:> & .
Tire pre ssure
When towing a trailer, inflate the tires of your vehic le to the cold tire
pressure listed under "Full load"on the sticker on the right door­
jamb. Inflate trai ler tires to trai ler and tire manufacturers' specifica ­
tions.
Lights
The head ligh t settings should be checked wit h the trai ler attached
before driving off. Have the head lights adjusted as necessary so
t hat you can see the road ahead but not blind oncoming traffic.
Check to make sure both vehicle and trailer lights are working prop ­
erly.
Engin e cool ing sy stem
Towing a t rai ler makes the engine wo rk ha rder . It is important that
the cooling system's performance stands up to the additiona l
strain. Make sure that the coo ling syste m has enoug h fluid.
Traile r br akes
If your traile r is equipped wi th a braking system, check to be sure
that it conforms to al l regu lations.
T he trailer hydraulic brake system must not be directly connected to
the vehic le's hydrau lic brake sys tem.
Safety chai ns
Be sure trailer safety chains are properly connected from the trailer
to the h itch on the vehicle. Leave enough slack in the chains to
permit turning corners. When you install safety chains, make sure
they will not drag on the road when you are driving.
The chains should cross under the trailer tongue to prevent it from
dropping in case of separation from the hitch. _.

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 •

•
labeled ask the station operator what fuel is being dispensed before
filling up your vehic le .
Service stations offering diesel fuel are generally located on truck
routes or major highways. Directories of diesel fuel stations are
usually available at diese l fuel stations.
Some states in the USA require permits to purchase diesel fuel.
Check with your State Motor Vehicle Department.
Diesel fuel may not be available outside the USA and Canada . Be
su re to check before traveling to other countries .
Winte r ope ra ti on
At temperatures be low 20° F (- 7° Cl, Diesel fuel No. 2 loses its fluidity
due to wax separation, which may c log the fuel filter or tank filter
and keep the engine from running.
To he lp the filter from being clogged by wax, the fue l filter in your
vehic le is automatically preheated. Preheating the fuel fi lter makes
operation of your vehicle poss ible with Diese l fue l No. 2 down to -
10° F (- 24° Cl.
If you expect tempe ratures below 5° F ( -15° C) ask your fuel dealer
whether their Diesel fuel No. 2 is sufficiently winterized for the prevai ling and expected temperatures .
If not winterized or insufficiently winterized diesel fuel has already
thickened to the extent that the engine will not start, warm the
vehicle up by leaving it in a heated garage.
It is normal that the engine noise level (dieseling) is louder during
the warm -up per iod in winter. It is also normal when whitish -blue
smoke comes out of the tailpipe after starting and dur ing warm-up.
The amount of smoke depends on the outside temperature .
Do not let your diese l eng ine idle unnecessarily after a cold start.
Driving off slowly will shorten the warm -up period.
F ue l supply and fillin g you r fu el tank
& WARNING
• Never use "s tarting a ssis t f luid s." They m ay be pot entiall y
explo sive or c au se a " run-away " engine condition. Thi s cou ld
re sult in serious e ngin e da ma ge a nd pe rsonal injury.
• Never use fu el line anti -free ze offer ed f or ga soline engine s.
0 Note
• Your diesel engine has been speci fically designed to operate
only on Ultra Low Sulfur Diese l fuel. Therefore, never use home
heating oi l or regular gaso line . The properties of these fuels may
cause serious damage to the fuel injection system and to the
engine . Using these fuels can cause expensive engine repairs and
wi ll also adversely affect your New Vehic le Limited Warranty.
• I f diese l fue l should get on any rubber hose, it must be wiped off
immediately . Then wash the contaminated hose portion with soap
and warm water. Do not allow diesel fuel to remain on connecting
hoses. They may develop leaks and cause serious damage. •
Fuel tank
Fuel filler neck
The fuel filler neck is located o n the right rear s ide panel behind the
fuel filler f lap.
I f the powe r locking system should fa il, you can still open the flap
manually - for detailed instructions see:::::,
page 222.
You can find the fuel tank capacity of your vehicle in Techni cal Data
:::::, page 296 .
The label on the inside of the fuel filler flap tells you the correct fuel
for your vehicle. F or more informa tion about fue l specifications, see
=:> page 217. _,,
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

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Closing the engine hood
- Pull the hood down until the pressure from the strut 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.
• Set the parking brake fully .
& WARNING (continued)
• Move selector lever of automatic transmission to "P" {Park);
put manual transmission in Neutral.
• 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: .,_

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& WARNING !continued )
-First, fully apply the parking brake, move selector lever of
automatic transmission to "P" (Park); put manual transmission
in Neutral.
- Always use extreme caution to prevent clothing, jewelry, or
long hair from getting caught in the radiator fan, V-belts or
other moving parts, or from contacting hot parts. Tie back hair
before starting, and do not wear clothing that will hang or
droop into the engine .
• Minimize exposure to emission and chemical hazards
:=> &.
& WARNING
California Proposition 65 Warning :
• Engine exhaust , some of its constituents, and certain vehicle
components contain or emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and reproductive harm . In
addition, certain fluids contained in vehicles and certain products
of component wear contain or emit chemicals known to the State
of California to cause cancer and birth defects or other reproduc ­
tive harm.
• Battery posts, terminals and related accessories contain lead
and lead compounds , chemicals known to the State of California
to cause cancer and reproductive harms. Wash hands after
handling.
0 Note
When adding fluids , always make sure that they are poured into the
proper container o r filler opening, otherwise serious damage to
vehicle systems will occur .
ffi For the sake of the environment
To detect leaks in time, inspect the vehicle floor pan from under­
neath regularly. If you see spots from oil or other vehicle fluids, have
your vehicle inspected by an authorized Audi dealer .•
Engine compartment
Ap plie s to veh icl es: wit h 2.0 I tur bo, 4-cy lind er•e ng ine
2.0 liter , 4-cylinder turbo gasoline engine (200
hp)
These are the most important items that you can check.
Fig. 164 Engine compartment : 2 .0 I , 4-cy linder turbo
G) Coolan t expansion tank (- L l .... ... .... .... ... .. . .
0 Windshield washer container (W ) ... .... ... ... ... .
© Eng ine oil d ipstick (orange) .. ...... ........ ..... .
Vehic le care I I
233
240
229 ~
irechnical data

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© Engine oil filler cap ("t=:?:) .... ........ .... ... ... . .
© Brake fluid reservoir ( l .......... ... .. ...... .. .
© Battery ...... .. ........ ....... ......... .. .... .
& WARNING
Before you check anything in the engine compartment , always
read and heed all WARNINGS ~
& in "Working in the engine
compartment" on
page 224. •
Applies to veh icles : with 2.0 I TO I, 4-cyl inder diese l-engine
230
235
236
2 .0 liter , 4-cylinder turbo diesel engine (140
hp)
These are the most important items that you can check.
Fig. 165 Engine compartment: 2.0 I, 4-cylinder turbo
G) Coolant expansion tank ( J_ ) ....... ... .... .... .. .
0 Windshield washer container ('C,;> ) •••• •• •••• ••• •• •
233
240
© Engine oil dipstick (orange) ..... ... ...... .... ... .
© Engine oil filler cap ("t=:?:) .. ...... ..•........... ..
G) Brake fluid reservoir ( ) ..... ....... ...... .... . .
© Battery . .................. ..... .............. .
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS
~ & in "Working in the engine
compartment" on
page 224. •
Engine oil
Engine oil specifications
229
230
235
236
The engine oil used in your Audi needs the right kind of
oil.
The engine in your Audi is a sophisticated powerp lant that was built
to exacting specifications. This engine needs the right kind of
engine oil that meets specifications rega rding quality and viscosity
so that it can run smoothly and reliably. Choosing the right oil and
changing oil within the time and mileage intervals printed in your
vehic le's Warranty
& Maintenance booklet matters a lot more today
than it did years ago. Audi has developed a special quality standard
for engine oi l that will help assure that your vehicle's engine will get
the lubrication it needs for proper operation.
Modern engine lubrication has taken a quantum leap in the last few
years. Many synthetic oils available today provide better engine
lubrication that can outlast traditional petroleum -based oils,
making them a smart choice for use throughout the life of your Audi.
Whether you use synthetic or petroleum -based engine oil, the oil
that you use must conform to Audi's oi l quality standard VW 502 00
(vehicles with gasoline engine) and VW 507 00 (vehicle with diesel
engine) to help keep your vehicle's engine running smoo thly and _,..

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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. •