check engine light AUDI TT COUPE 2009 User Guide

Engine oil pressure malfunction 9=;r;
The red engine oil pressure warning symbol requires
immediate service or repair.
If the ~ symbol appears in the display and flashes, the oil
pressure is too low. In addition to the symbol, the following
message also appears in the display:
Switch off engine and check oil level
- Pull off the road and stop the vehicle .
- Shut the engine down.
- Check the engine oil level~
page 221.
-Contact your authorized Audi dealer for assistance if
necessary .
Engine oil level too low
If the engine oil level is too low, top off oil to the proper level
=>
page 222.
Engine oil level OK
If the ~ symbol starts flashing again ev en though the engine oil
level checks OK on the dipstick,
do not start driving again and do not
let the engine run at idle .
Instead, contact your authorized Audi
dealer for assistance .
[ i J Tips
• The engine oil pressure symbol ~ is not an indicator for a low
engine 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.
• The yellow oil level warning indication _ requires oil refill or
workshop service without delay. Do not wait until the red oil pres­ sure warning symbol
~ starts to flash before you respond to the
Controls and equip ­
ment
Driver information system
low oil level warning = . By then, your engine may already have
suffered serious damage. •
Fuel supply too low Jl
When the L symbol illuminates, this means there are about 2.6
gallons
(10 liters) of fuel left in the fuel tank . Time to refuel!
=>
page 212.
If the symbol lights up , even when there is ample fuel in the tank,
and the text
Tank system malfunction! Please contact workshop
appears in the display, there is a fault in the system. Contact a qual­
ified workshop to have the fault rectified. •
Checking the engine oil level .d'" ..
Please add max. 1 qt of engine oil!
If the symbol comes on, add 1 quart (1 liter) of oil at the next
opportunity=>
page 222. •
Checking the engine oil level -1.
When the _ symbol illuminates, check the engine oil level as soon
as possible =>
page 221. Top off the oil at your earliest opportunity
=>
page 222. •
Engine oil sensor defective • ...
If the symbol illuminates, contact your authorized Audi dealer
and have the oil sensor inspected. •
I • •

There are three reasons why the defective bulb message would
appear in the display:
• The light bulb has burnt out=>
page 278.
• The fuse is "blown"=> page 274, "Replacing a fuse".
• The wire connection to the light bulb is defective.
Have the bulb replaced or the connection repaired by your autho ­
rized Audi Service department.
& WARNING
• Light bulbs are pressurized and could explode while they are
being changed causing serious personal injury.
• Work with due care when handling the high-voltage section of
gas discharge (xenon) lamps. Failing to do so could result in death
or serious injury! •
Brake light defective i( r (USA
models)/ (Canada models)
In case of a malfunction or component failure, the symbol
(USA models)/ (Canada models) can appear . The following elec­
trical components should be checked, repaired or replaced, as
necessary:
• Brake light bulbs
• All wiring connections
• Brake light switch
Contact your authorized Audi dealer for assistance if necessary.
[ i] Tips
The brake light switch is only inspected as part of the functional
check after the engine is started .•
Controls and equip ­
ment
Driver information system
Ap plies to veh ic les : w it h auto matic headli ghts
Light/rain sensor defective U
The indicator light indicates a defect in the automatic
headlights/automatic wiper system.
If the symbol illuminates, the light sensor has failed. For safety
reasons , the low beams are turned on permanently with the switch
in
AUTO. However, you can continue to turn the lights on and off
using the light switch . In the case of a defect in the rain sensor, the
windshield wiper lever functions are still available. Have the
light/rain sensor checked as soon as possible at an authorized Audi
dealer. •
Applies to v ehi cle s : with Ad aptive Light
Adaptive Light defective " )
Adaptive light defective
When this symbol l-illuminates, it means that Adaptive Light is
defective. Go to a qualified workshop to have the headlights or the
control unit for the Adaptive Light repaired. •
Applies to veh ic les : wi th tir e pr essu re m on it o ring sys tem
Tire pressure monitoring system
Tire pressure that is too low must be corrected as soon as
possible.
If the O symbol flashes for about one minute after the igni­
tion is switched on and then remains on, there is a malfunc­
tion in the system. Consult the nearest authorized Audi
dealer as soon as possible.
Additional information about the tire pressure monitoring system
can be found:=> page 253. •
I • •

& WARNING
• Wiper blades are crucial for safe driving! Only when they are in
good condition are they able to clear the windows properly to
provide uncompromising visibility. Worn or damaged wiper blades
are a safety hazard~
page 63, "Replacing front wiper blades"!
• The light/rain sensor* is only designed to assist and support
the driver. It remains entirely the driver's responsibility to monitor outside weather conditions and to manually activate the wipers as
soon as rain or drizzle reduces visibility through the windshield.
• The windshield must not be treated with water-repellent mate­
rials. They can increase glare under poor visibility conditions such
as wetness, darkness, or when the sun is low on the horizon. In
addition, they can cause the windshield wipers to chatter.
0 Note
In freezing or near freezing conditions:
• Always check that the wiper blades are not frozen to the glass
before you turn the wipers on. Loosen a wiper blade which is frozen
in place before operating the wipers to prevent damage to the wiper
blade or the wiper motor.
• Do not use the wipers to clear a frosted window . Using the
wipers as a convenient ice scraper will destroy the wiper blades.
• Before you take your vehicle to an automatic car wash, make sure
you have the windshield wiper system switched off (lever in position
0), otherwise the windshield wiper system could get damaged in the
car wash if it should suddenly come on.
[ i] Tips
• The rain sensor is part of the interval wiping system. Turning off
the ignition will also deactivate the rain sensor . To reactivate the
sensor, switch off the interval wiping function, then switch it back
on again.
Controls and equip ­
ment
Clear vision
• Worn or dirty windshield wiper blades cause smearing, which
can affect the operation of the light/rain sensor*. Check the condi­
tion of your windshield wiper blades regularly.
• Applies to vehicles with light/rain sensor: When the wipers are
switched on manually and in rain conditions, the automatic head­
lights* turn on~
page 52, "Sensor activated head and tail light
control" or off during the day when the wipers are no longer oper­
ating. The automatic headlights * function is available in this case
only when the light switch is in the "AUTO" position~
page 52,
fig. 40.
• Make sure the washer fluid reservoir in the engine compartment
is topped off before going on a long trip. Look up~
page 233 for
checking and filling the washer container .
• The wipers only operate with the hood completely closed. •
Applie s to v ehi cles: with he adli gh t wash er syst em
Headlight washer system
The headlight washer system cleans the headlights.
Operate the windshield wiper/washer system=> page 60,
fig. 50 ® with the headlights turned on by holding the
lever for longer than one second.
The washer jets extend forward out of the front bumper driven by
water pressure to spray the front headlights with water .
You should inspect the headlights regularly (for example when refu ­
eling) and clean off any solid dirt or insects from the lenses.
To ensure the system works properly in winter, keep the washer jets
free of snow and remove any ice using a de -icing spray. •
I • •

Activating
The ESP is automatically activated when the engine is started and it
performs a self-test. You can activate a deactivated ASR if required
by pressing the=>
page 182, fig. 130 button. When it is activated,
the message
ESP/ASR on appears briefly in the display. Vehicles
with front -wheel drive a deactivated ASR automatically re -activates
itself at a speed of 40 mph (70 km/h).
Deactivating
You can deactivate the ASR if required by pressing the button (for
less than 3 seconds)=>
page 182, fig. 130. With the ASR deactivated,
the ESP check light comes on, see=>
page 17. The message ASR off
appears in the display as well. On vehicles with front -wheel drive:
deactivation is possible only up to 30 mph (50 km/h) for safety
reasons. Vehicles with all -wheel drive : the ASR can be deactivated
at any speed.
The ASR should normally be activated all the time. Only in certain exceptional situations when some slip is desirable does it make
sense to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck.
When the abnormal situation is over, you should activate the ASR
again.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i J Tips
To ensure that the ASR works properly, all four wheels must be fitted
with identical tires. Any differences in rolling radius of the tires can
Intelligent technology
cause the system to reduce engine power when this is not desired.
See also ::::>
page 246, "New tires and replacing tires and wheels".
Rear spoiler
The rear spoiler improves vehicle handling and enhances
driver control.
Fig. 131 Switch for
rear spoiler
The rear spoiler deploys and retracts. Spoiler operation can be set
for automatic or manual operation .
Automatic mode (normal operation)
• Automatic deployment : At a speed of about 75 mph (120 km/h),
the rear spoiler deploys automatically.
• Automatic retraction: When speed drops below about 50 mph
(80 km/h), the rear spoiler retracts automatically.
Manual mode
• Manual deployment: Tapping briefly on the switch ::::> fig. 131
deploys the rear spoiler .
• Manual retraction: At speeds up to about 10 mph (20 km/h),
retract the rear spoiler by pressing and holding the switch
::::> fig. 131. At speeds between 10 mph (20 km/h) and 75 mph (120
km/h), retract the rear spoiler by tapping on the switch=> fig. 131 .
Vehicle care I I irechnical data

• Be aware of the different than usual steering response and
adjust your steering force accordingly.
• Have the problem checked and set right by an authorized Audi
dealer as soon as possible.
• If a steering malfunction occurs, this is signaled with the or.
~ indicator lights and a warning tone, see.
[ i] Tips
• If the power steering system should fail, or if the engine is not
running (for example, while being towed} , you will still be able to
steer the vehicle. However, more effort will be required to do so.
• If the power steering system is not functioning properly, contact
your authorized Audi dealer immediately.
Ap plies to vehicles : w ith A ll Wheel Drive
0 iving w i h your quattro®
With All Wheel Drive, all four wheels are driven.
General information
With All Wheel Drive, power is distributed to all four wheels. This
happens automatically depending on your driving style and the
road conditions at the time. See also=> page
184, "Electronic differ ­
ential lock (EDU".
Winter tires
When driving in the winter , your vehicle with All Wheel Drive has an
advantage, even with regular tires. In winter road conditions it may
be advisable to mount winter tires (or all-season tires} for improved
driveability and braking : these tires must be mounted on all four
wheels. See also=> page 250, "Winter tires".
Controls and equip­ ment Safety first Vehicle operation
Intelligent technology
Snow
chains
Where tire chains are mandatory on certain roads, this normally
also applies to vehicles with All Wheel Drive=> page 251, "Snow
chains".
Replacing wheels/tires
Vehicles with All Wheel Drive must always have tires of the same
size. Also avoid tires with different tread depths . For details see
page => page 246, "New tires and replacing tires and wheels".
Off-Road driving?
Your Audi does not have enough ground clearance to be used as an
off-road vehicle. It is therefore best to avoid rough tracks and
uneven terrain as much as possible. Also refer to=> page 192.
& WARNING
Always adjust your driving to road and traffic conditions. Do not
let the extra safety afforded by All Wheel Drive tempt you into
taking extra risks.
• Although the All Wheel Drive is very effective, always
remember that braking capacity is limited by tire traction. You
should therefore not drive at excessive speeds on icy or slippery
road surfaces.
• On wet road surfaces, be careful not to drive too fast because
the front wheels could begin to slide on top of the water (aqua­ planing}.
If this should occur, you will have no warning from a
sudden increase in engine speed as with a front-wheel drive
vehicle . Always drive at speeds which are suited to the road condi­
tions. -risk of crash. •
Vehicle care Do-it-yourself service Technical data

one half. Never drive faster than the posted speed limit and weather
conditi ons permit. •
Reducing unnecessary Idling
Even when your car is just idling it burns up fuel.
- Shut the eng ine off when you are not driving the vehicle .
- Do not warm up the vehicle by letting the eng ine run at
idle.
I t makes sense to shut off the engine in traffic jams, when waiting
for trains to pass at railroad crossings, or at traffic lights that have long waits on red. Turning the engine off for just 30 -40 seconds
saves more fue l than is burned s tarting the engine again .
It takes a long time for the engine to warm up fully when it is
running at idle . However, wear and noxious emissions a re especial ly
high when the engine is warming up . So you should drive away as
soon as you start the engine and avoid running at high RPMs whi le
the engine is stil l warming up .
0 Note
Do not leave engine idling unattended after starting . If warning
lights should come on to indicate improper operation, they would
go unheeded. Extended idl ing also produces heat, wh ich cou ld
result in overheating or other damage to the vehicle or other
property .•
Regular maintenance
A badly tuned en gine unnecessarily wastes a lot of fuel.
- Have your v ehicl e serv ice d at reg ular intervals.
Controls and equip­
ment Safety first Vehicle operation
Dri
ving and environm ent
By having your vehicle regularly serviced by an Audi dea ler helps to
ensure that i t runs properly and economically . The conditio n of your
vehic le not only affects its safety and abi lity to hold its va lue, it also
affects
fuel consumption .
Check your oil each time you fill your tank.
The amount of oil used is related to engine load and speed .
I t is normal for the oi l consumption of a new eng ine to reach its
lowest va lue after a certain mi leage has been driven.
You must drive your vehicle about 3,000 miles (5,000 kilometres) be fore you can proper ly assess o il consumpt ion.
This also applies to fuel consumption and engine output .
0 Note
• Have your vehicle maintained properly and in accordance with
t he service recommendations in you r Warranty
& Maintenance
booklet. Lack of proper ma intenance as well as improper use of the
vehicle wi ll impair the function of the emission control system and
cou ld lead to da mage.
• Do not alter or remove any component of the Emission Contro l
System unless approved by the manufacturer .
• Do no t al te r or remove any device, such as heat shields,
switches, ignition wires, valves, which are designed to protect your
veh ic le' s Emission Contr ol System and o ther i mportant vehicle
components. •
Fewer short trips
Fu el con su mp tion wi ll alwa ys be rel atively high on shor t
tri ps.
- Try to avo id driving short dista nce s wi th a cold engine.
Vehicle care Do-it-yourself service Technical data

_______________________________________________ C_l_e _a_ n_ in _____ g ___ a_n_ d ___ p_r _o _t_ e_ c_ t _i _o _ n __ lfll
•
0 Note
• Never use chemical solvents (e.g. lighter fluid, turpentine),
waxes, shoe polish or similar products on Alcantara® surfaces.
• To avoid damage, have stubborn stains removed by a commer­
cial cleaning specialist.
• Do not use brushes, stiff sponges or similarly abrasive cleaning
aids. •
Safety belts
Only well-maintained safety belts work reliably when
needed.
Heavily soiled safety belts may not retract properly.
- 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.
& 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.
& WARNING (continued)
• When cleaning your safety belts, inspect them for damage. If
you discover damage, see your Audi dealer .
• Always read and heed all WARNINGS and the information
~ page 198. a
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.
I f the engine compartment is cleaned at any time with grease
removing solutions
21 , 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
~
21 Use only the correct cleaning solutions. Never use gasoline or diesel fuel.
Vehicle care I t •

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
Checking and filling
Engine hood
Releasing the engine hood
The engine hood is released from inside the vehicle.
-Open the driver's door .
Fig. 135 Driver's side
footwell: engine hood
release lever
-Pull the release lever on the left under the instrument
panel
=> fig. 135 in the direct ion of the arrow.
The hood pops up slightly under spring pressure. •
Opening the engine hood
Fig. 136 Release lever
under the engine hood
Before opening the engine hood, make sure that the wind­
shield wipers are flat against the windshield. Otherwise,
they could damage the paint on the hood.
Lift the hood slightly =>&, .
Pull up on the release under the hood => fig. 136. This
releases the catch.
- Open the hood all the way.
The hood is kept in the open position by two gas struts.
& 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. •

_____________________________________________ C_h_ e_ c _ k_in -= g_a _ n_d _ f_il _li _n ..;::g =--____.ffllll
© Jump start points(+) under a cover, (-) bolt head ... .
© Windshield/head light washer container ( O ) .... ... .
& WARNING
Before you check anything in the engine compartment , always
read and heed all WARNINGS
=> & in "Working in the engine
compartment" on
page 217. •
Applies to v ehic le s : w ith 3,2 1 250 -hp eng ine
3 .21 250-hp engine
280
233
These are the most important items that you can check.
Fig. 138 Engine compartment: 3.21 250-hp engine
0
0
®
©
Coolant expansion tank (J _J
Engine oil dipstick (orange)
Engine oil filler cap
('l:::r.)
Brake fluid reservoir ( ) 225
221
222 227
© Jump start points (
+l under a cover, (-) bolt head .. . .
© Windshield/headlight washer container (Q ) ....... .
& WARNING
Before you check anything in the engine compartment , always
read and heed all WARNINGS
=> & in "Working in the engine
compartment" on
page 217. •
Engine oil
Engine oil specifications
280
233
The engine oil used in your Audi needs the right kind of
oil.
The engine in your Audi is a sophisticated powerplant that was built
to exacting spec ifications. This engine needs the right kind of
engine oil that meets specifications regarding 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
vehicle's Warranty
& Maintenance booklet matters a lot more today
than it did years ago . Audi has developed a special quality standard
for engine oil that will help assure that your vehicle's engine will ge t
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 petro leum -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 oi l
that you use must conform to Audi's oil quality standard VW 502 00
to help keep your vehicle's engine running smoothly and help prevent the formation of harmful deposits, sometimes called
"s ludge," that over time can lead to expensive repairs.
~
Vehicle care I I irechnical data

___________________________________________ C_ h_e _c_ k_ i_n ...::g a....- a_n _d_ f_il _li _n --=g ------
•
Engine oil consumption
The engine in your vehicle depends on an adequate
am ount of oil to lubricate and c ool all of its moving parts.
In order to provide effective lubrication and cooling of internal
engine components, all internal combustion engines consume a
certain amount of oil. Oil consumption varies from engine to engine
and may change sign ificantly over the life of the engine . Typically,
engines with a specified break-in period (see~
page 190) consume
more oil during the break-in period than they co nsume after o il
consumption has stabilized .
Under normal conditions, the rate of oil consumption depends on
the quality and viscosity of the oil, the RPM (revo lutions 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 fue l residue and the oxidation level of the oil. As
any engine is subject to wear as mileage bu ilds up, the oil consump ­
tion may increase over time until rep lacement of worn components
may become necessary .
With all these variables coming into play, no standa rd rate of oil
consumption can be estab lished or specified. There is no a lternative
t o regula r and frequent checking of the oil level, see Note.
I f the yellow engine oil level warning symbol in the instrument
cluster _ lights up, y ou should check t he oi l level as soon as
possible
with the oil dipstick~ page 221. Top off the oil at your
earl iest co nvenience ~
page 222.
& WARNING
Before you check anything in the engine compartment , always
read and heed all WARNING S
~ & in "Working in the engine
c ompartment " on
page 217 .
0 Note
Driving with an insuff ic ie n t o il level is l ikely to cause severe damage
to the engine.
[ i ] Tip s
• The oil pressure w arning display ce,. is not an indi cator of the oil
level . Do not rely on it. Instead, check the oil level in your engine at
regular interv als , prefe rably ea ch time you refuel , and always before
going on a long trip.
• I f you have the impression your engine consumes excessive
amoun ts of oi l, we recommend tha t you consult your Audi dealer to
have the cause of your concern properly diagnosed . Keep in mind
that the accurate measureme nt of oil consumption requires great
care and may take some time. Your Audi dealer has instructions
about how t o measure oil consumption accurately. •
Checking the engine oil level
Vehicle care I t •
Fig. 13 9 Illu stra tion of
pri nciple 1 : Mar ker s on
oi l dip sti ck ...