check engine light AUDI TT ROADSTER 2008 User Guide

-Contact your authorized Audi dealer for assistance if
necessary.
If the engine coolant level is correct, then the radiator fan may be
the cause of the malfunction.
If the generator warning/indicator light should also illuminate
=> page 19 , then the fan belt may be damaged.
& WARNING
• If your vehicle should break down for mechanical or other
reasons, park at a safe distance from moving traffic, turn off the
engine and turn on the hazard warning lights
=> page 75, "Emer­
gency flasher A".
• Never open the hood if you see or hear steam or coolant
escaping from the engine compartment -you risk being scalded.
Wait until you can no longer see or hear steam or coolant
escaping.
• The engine compartment of any vehicle is a dangerous area.
Before you perform any work in the engine compartment, turn of
the engine and allow it to cool. Follow the warning stickers
=> page 212, "Engine compartment".
0 Note
Do not continue driving if the _F_ symbol illuminates. There is a
malfunction in the engine cooling system -you could damage your
engine. •
Controls and equip ­
ment
Driver information system
Engine oil pressure malfunction 'l=;:f.
The red engine oil pressure warning symbol requires
immediate service or repair. Driving with a low-oil-pres­
sure indication is likely to result in serious damage to the
engine.
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
Immediate actions
- Pull off the road and stop the vehicle.
- Shut the engine down.
- Check the engine oil level with the dipstick=> page 224.
Dipstick reading checks too low
- Top off oil to the proper level
=> page 225.
- Make sure that the oil pressure warning symbol ~
appears no longer in the display before you start driving
again.
Dipstick reading checks OK
- If the ~ symbol starts flashing again even 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 assis­
tance.
I • •

Driver information system
[ i] Tips
• The engine oil pressure symbol 9:::r. 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
9:::r. starts to flash before you respond to the
low oil level warning . By then, your engine may already have
suffered serious damage. •
Yellow symbols
A yellow symbol means WARNING.
Yellow symbols mean:
Low fuel level
Check engine oil level Engine oil sensor malfunction
-
Worn brake pads
USA models:
Speed warning 1
Canada models:
Speed warning 1
-
USA models:
Speed warning 2
-Canada models:
Speed warning 2 =>
pag
e35
=> page35
=> page35
-
=> page35
=> page35
=> page35
=> page35
-
=> page35
Dynamic headlight range con­
trol* defective => page35
Windshield washer fluid level low
=> page 35
Battery voltage too high or too
low
Defective light bulb
USA models:
Defective brake light
Canada models:
Defective brake light =>
page35
=> page36
=> page36
=> page36
Light/rain
sensor defective (auto-=> page 36
matic headlights) * defective
Adaptive Light* defective =>
page 36
Tire pressure monitoring system * => page 37
Yellow symbols indicate a priority 2 malfunction -Warning!
When a yellow symbol appears, a warning tone will sound
once .
Check the displayed function as soon as possible . If more than one
priority 2 malfunction is detected, all symbols will appear one after
the other for about two seconds.
To display driver information
As an example, the[} symbol appears in the display . If you now
press the button =>
page 12, fig. 2 ©, the following driver message
appears in the display:
PLEASE REFUEL
The driver message in the display goes out after about 5 seconds.
You can display the driver message again by briefly p ressing the
button. •

Fuel supply too low [J
When the J symbol illuminates, this means there is about 1.8
gal lons
(7 l iters) o f fue l left in the fuel ta nk. T ime to re fuel!
=>
page 275.
I f the symbo l lights up, even when there is ample fuel in the tank,
and the text
TANK SYSTEM MA LFUN CTION! CON TACT WORKSHOP
appears in the display, there is a fau lt in the system. Contact a qual ­
ified workshop to have the fau lt rectified. •
Checking the engine oil level _,;.
When the -= symbol illuminates, check the engine oil leve l as soon
as possib le =>
page 224. Top off the oil at your ear liest opportun ity
=>
page 225. •
Engine oil sensor defective
-
If the _ symbol illuminates, contact your authorized Audi dealer
and have the oil sensor inspected . Unti l you have this done, check
the oi l leve l each time you re fue l jus t to be on the sa fe s ide
=>
page 224 . •
Worn brake pads .)
If the symbo l illuminates, contact your authorized Audi dea ler to
have the front bra ke pads inspected (on that occasion have the rear
brakes inspected as wel l to be safe). •
Controls and equip ­
ment
Driver inform ation system
Speed warning 1
~ (USA models) / ~ (Canada
models)
I f the ~ symbo l illuminates, this means you are d riving faste r than
the set vehicle speed . Slow down!=>
page 37. •
Speed warning 2
-.... (USA models) /
l.,... (Canada models)
If the C) symbol il luminates, this means you have driven faster than
the sec ond set vehic le s peed. Slow d own! =>
page 37. •
Applies to veh icles : wi th dynami c he ad light r ange ad just ment
Headlight range control defective
If the il luminates, the dynamic head light range control is no
longer working pr ope rly. Have the syste m checked and repa ired at
your authorized Audi dea ler .•
Windshield washer fluid level too low .-_j
If the ~ symbol illuminates, add windshie ld washer fluid to the
washer sys tem =>
page 236 . •
Battery voltage low ~
If the C sy mb ol illu min ates, co ntact your au thori ze d Audi dealer
and have the following components inspected:
• drive belt
• generator
• b att e ry charge
I • •

Driver information system
Also see if the generator warning/indicator light illuminates
=> page 19. •
Defective light bulb warning
The defective light bulb warning tells you when a vehicle
light bulb has become defective.
If a defective bulb has been detected by the system or a light bulb
burns out, the symbol with a message appears in the display to
tell you which bulb is burnt out and where it is located. For example:
REAR LEFT TURN SIGNAL
After 5 seconds, the message disappears. If you want to recall the
message into the display, press the CHECK button.
There are three reasons why the defective bulb message would appear in the display:
• the light bulb has burnt out=> page 277.
• the fuse is "blown" => page 273, "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 K: U (USA
models) / (Canada models)
In case of a malfunction or component failure, the acoustic warning
will sound and the symbol&;
l[ (USA models)/ (Canada
models) can appear.
The following electrical 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. •
Applies to vehicles: with automat ic headlights and rain sensor
Light /rain sensor defective >
AUTOMATIC HEADLIGHTS/AUTOMATIC WIPERS DEFECTIVE
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 a dealership. •
Applies to veh ic le s: w ith Adaptive Light
Adaptive Light defective
ADAPTIVE LIGHT DEFECTIVE
•
'

& WARN IN G ( continu ed)
• The light /ra in sens or* is only de signed to assist and support
the dri ver. It rem ain s e ntirely th e dr iver's re spon sibilit y to m onitor
out side weather cond it ions and to m anu ally activ ate the wipers a s
s oo n as rain or drizz le reduce s visibility t hroug h th e w indsh ield .
• The windshield mu st not be tr eated with w ater-r ep ellent mate­
rial s. They c an in creas e glare u nder poor visibilit y cond ition s suc h
a s wetn ess, darkne ss, or when t he sun is low on the hori zon . In
a dditi on, they can cause the wi nd shield 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 wil l 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 sudden ly come on .
[ i] Tips
• The rain sensor is pa rt of the interva l wiping system. Turning off
the ignition will also deactivate the rain sensor . To reactivate the
sensor, switch off the interva l wiping function, then switch it back
on again.
• Worn or dirty windshield wiper b lades cause smearing, which
can affect the operation of the light/rain sensor *. Check the condi ­
tion of your windshield wiper b lades regular ly .
• Applies to vehicles with light/rain sensor : When the wipers are
switched on manually and in rain conditions, the automatic head -
Controls and equip­
ment
Cl ea r vision
lights * turn on~ page 70, "Sensor activated head and tail light
control" or off during the day when the wipers are n o longer oper ­
ating . The automatic headlights * function is available in this case
only when the light switch is in the "AUTO" position~
page 70,
fig. 62.
• Make sure the washer fluid reservoir in the engine compartment
is topped off before going on a long trip. Look up~
page 236 for
checking and filling the washer container.
• The wipers only operate with the hood completely closed .•
App lies to vehicles: with headlight washer system
Headlight washer system
The headlight washer system cleans the headlights.
Operate the winds hield wiper/washer system=> page 78,
fig. 72
© wit h the head lights turned on by holding the
lever for longer than one seco nd.
The washer jets extend forward out of the front bumper driven by
water pressure to spray the front head ligh ts with water.
You should inspect the head lights regular ly {for examp le when refu ­
e ling) and clean off any solid dirt or insects from the lenses .
To ensure the sys tem works proper ly 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 184, fig. 142 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 184, fig. 142. With the ASR deactivated,
the ESP check light comes on, see=>
page 18. 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 249, "New tires and replacing tires and wheels".
Rear spoiler
The rear spoiler improves vehicle handling and enhances
driver control.
Fig. 143 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. 143
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. 143. At speeds between 10 mph (20 km/h) and 75 mph (120
km/h), retract the rear spoiler by tapping on the switch=> fig. 143 .
Vehicle care I I irechnical 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 your Main tenance
& Warranty
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 Control System and o ther i mportant vehicle
components. •
Fewer short trips
Fu el consu mption will alwa ys be relatively high on shor t
trips.
- Try to avo id driving short dista nce s wi th a cold engine.
Vehicle care Do-it-yourself service Technical data

-Cleaning and prot
ection
-~--------------
Safety belts
Only well-maintained safety belts work reliably when
needed.
H eavily soiled safety be lts may no t retract properly.
- Keep belts c lean.
- For clean ing, use a mild soa p an d wa ter so luti on. Let
belts dry thoroughly and away from d irect sunlight.
- D o not allo w inertia reel safe ty belts to retra ct before
they are com pletely dry .
- Check the condition of your safety belts
regularly .
& WARNING
Damaged safety belt s can break in a crash .
• Anything that might damage your safety belts could mean that
y ou and yo ur pas senger s would not be adequatel y prote cted in an
accident .
• Safety belt performance depend s on correct in stallation . Never
remove belt s from the vehicle to clean them.
• Do not u se chemi cal cleaning agents , blea ch or dyes . They h ave
c orrosive propertie s wh ich weaken the webbing.
• When cleaning your safety belts , in spect them for dam age . If
you discover damage, see your Audi dealer .
• Alway s read and heed all WARNINGS and the infor mation
=> page 200 . •
Engine compartment
Be es pecially caref ul when cle aning the engine compart­
ment.
Alwa ys swit ch off the ignition before cle aning the engine => & .
Plenum pan el
Remove leaves from the plenum pane l in front of the w indshield
under the engine hood. This prevents the water drain holes from
becoming blocked, and it prevents debris from entering the vehicle
inter ior through the heating and ventilation ducts.
Corrosion protection
The engine compartment and transmission have been corrosion ­
pro tected at the factory.
Good anti -co rros io n treatment is very important, particularly in the
winter. If the vehicle is frequent ly driven on salt treated roads, the
enti re eng ine compartmen t and p lenum panel should be thor ­
oughly cleaned at the end of winter and retreated to prevent salt
damage . At the same time, the unde rside o f the vehicle shou ld be
washed as we ll.
I f the engine compartment is cleaned at any time with grease
removing solut ions
ll, or if you have the engine washed, the anti ­
corrosion treatment is almost a lways removed as well. It is therefore
essential to have a long-lasting corrosio n pro tec tion reapp lied to a ll
surfaces, seams, joints and components in the engine compart ­
ment .
& WARNING
Be awa re: Th e engine comp artment of any motor vehicle is a
potentially hazardou s area .
• Befo re working in the eng ine compartme nt, be sure to read the
i nformat ion =>
page 212 . .,.
11 Use on ly the correct cleaning so lutions. Never use gasol ine or diesel fuel.

_____________________________________________ C_h_ e_ c _ k_in -= g_a _ n_d _ f_il _li _n ..;::g =-- ____.ffllll
Checking and filling
Engine hood
Releasing the engine hood
The engine hood is released from inside the vehicle.
- Open the driver's door .
Fig. 147 Driver's side
footwell: engine hood
release lever
- Pull the release lever on the left under the instrument
panel => fig. 147 in the direction of the arrow.
The hood pops up slightly under spring pressure. •
Opening the engine hood
Fig. 148 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. 148. 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. •
Vehicle care I I irechnical data

-Checking and filling P'll:I ---=---------------
© Jump start points(+) under a cover, ( -) bolt head
© Windshield/headlight washer container ( O ) .. ... .. .
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS
~ & in "Wo rking in the engine
compartment" on page
220. •
Applies to v ehi cles: with 3,2 1 250 -h p eng in e
3 .21 250 -hp engine
279
236
These are the most important it ems that you can check.
Fig . 150 Engine compartment: 3.21 250-hp engine
G) Coolant expansion tank (J -) ..... ... .. ..... .. ... .
0 Engine oil dipstick (orange) . ... .. ...... ........ . .
© Engine oil filler cap ( © Brake fluid reservoir ( ) ............. .... .. .. .. .
228
224
225
230
© Jump start points(+) under a cover,( -) bo lt head ... .
© Windshield/headlight 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
220. •
Engine oil
Engine oil specifications
279
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 regarding quality and viscosity
so that it can run smoo thly and re liably. Choosing the right oil and
changing oil wi thin the time and mileage interva ls printed in your
vehic le's Maintenance
& Warranty 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 get
the lubrica tion 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 synthe tic or petro leum-based engine oil, the oil
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
"sludge,' ' that over time can lead to expensive repairs. •