2009 AUDI TT COUPE brake sensor

Driver inf orm atio n syst em
Warnings and symbols
Red symbols
A red symbol means DANGER
- Pull of the road a nd stop t he vehicle .
- Turn off the engine.
- Check the malfunctioning system. Contact your autho -
rized Audi dea ler or a qua lified workshop for assistance .
BRAKE

-
USA models:
Malfunction in the brake system => page 33
Ca
nada m odels : => page 33
Malfunction in the brake system
Engine coolant level too low/
=> page 34
engine coolant temperature too
high
Engine oil pressure too low
=> page 35
When a red symbol appears, a warning tone will sound three times
in succession. The symbol continues to flash until the malfunction
has been repaired . If there is
more than one malfunction, the
symbols appear one after the other for about two seconds.
[ i ) Tip s
• The message for a malfunction can be shown by pressing on the
left knob.
• During route guidance on vehicles with a navigation system, the
warning symbo l is shown in the field above .•
Yellow symbols
A yellow symbol means WARNING .
Low fuel level => page 35
l!check engine oi l level => page35
-
Engine oil sensor malfunction => page 35
-
IIWorn brake pads => page36
USA model s: => page 36 Speed warning 1
IIC an ada model s:
Speed warning 1 => page36
--
USA mod els: => page 36 Speed warning 2
C anad a m od els: => page 36 Speed warning 2
Dynamic headlight range con -
=> page 36 trol* defective
Winds hield washer fluid level low
=> page36
Battery voltage too high or too => page 36 low
Defective light bulb
=> page 36
U SA mod els: => page 36
Defective brake light
C an ada m od els: => page36
Defective brake light

Light/rain sensor defective (auto-~ page 37
matic headlights)* defective
Ad aptiv e Li ght* def ective
~ page37
Tire pressure monitoring system*
~ page 37
When a yel low symbol appears, a warning tone wil l sound once.
Check the displayed function as soon as possible . If more than one
malfunction is detected, all symbols wil l appear one after the other
for about two seconds .•
Driver info rmation
In addition to the warning/indicator lights and the
symbols in the instrument cluster display, driver informa­ tion is displayed.
F ig . 21 S ectio n of
instrum en t c luster :
Set/C hec k butt on
Driver information appears in the display when a defective light
bulb is reported by the defective light bulb warning ~ page 36,
when the brake pads are worn and before you engage a gear on
vehicles with S tronic .
In addition, driver information may appear when a red symbol
flashes in the driver disp lay .
Con tro ls and eq uip­
ment
Dri ver in form ati on syst em
To d is pl ay Driver inf orm ati on
As an example, the press the button~ fig. 21 , the following driver message appears in
t he display :
Switch off engine and che ck oil level
The driver message in the display goes out after about 5 seconds.
You can display the driver message again by br iefly pressing the
button. •
Brake system malfunction
BRAKE (USA models) /((D) (Canada models )
The indicator light flashes if the brake fluid level is t oo
low, if there is a malfunction in the ABS system or when the parking brake is engaged .
If the BRAKE / parking brake released, there is a ma lfunction in the brake
s y stem. In addition to the symbol , one of two messages
appears in the display:
STOP Vehicle and check brake fluid
ABS FAULT! SEE OWNER'S MANUAL
- Pull off the ro ad an d stop the vehicle.
- Obtain professional assistance.
USA models: if there is a malfunction in the ABS system, the
warning/indicator light i llumina tes along with the BRAKE system
malfunction warning/indicator light~&.
Canada models: if there is a malfunction in the ABS system, the
warning/indicator light i llumina tes together with the CCD> brake
system malfunction warning/indicator light~& .
Vehicle care I I irechnical data

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 • •

-Wit h a manual transm issi on, engage 1st gea r, or with a n
a utomatic transmission place the se lector lever in P
=> & .
- Remove the ignition key from the ignit io n lock.
Wha t el se you should do wh en parking yo ur v ehi cle on
a n incli ne or d ecline
Turn the steering whee l so that if the vehicle shou ld start to rol l, it
wi ll roll into the curb.
I f you are park ing on a
decline (the front of you r ve hicle facing
downhill) , turn the front wheels to the right so that they poin t
toward the curb .
If you are park ing on an in cline (the font of your vehicle facing
uphill!, turn the front whe els to the left so that they point
away from
the curb .
& WARNING
This is how you can reduce the ri sk of injury when le avi ng your
vehicle .
• Never p ark the vehi cle w here it can come
in cont act w ith dry
gra ss, s pilled fuel or any other flammable mater ial s.
• Never allow anyone -espe cially small ch ildren -to remain
in the
vehicle when it is locked . Locked doors make it more difficult for
re scu ers to ac ce ss the pa ssenger compartment in the e vent of an
emergency . Danger to life!
• Never lea ve childr en un super vis ed in the vehicle . Children
c ould release the parking brake or move the gearsh ift l ever out of
gear . The vehicle could start to r oll away a nd cau se an a ccident .
• No matter what the season i s, the temperature
in a parked
v ehi cle can reach dangerou s level s. •
Controls and equip ­
ment
On th e road
Acoustic parking system
Applies to veh ic les : wit h 4 -ch anne l a cou stic park ass is t
Rear acoustic park assist
Acoustic park assist gives a warning a bout o bstacles
behind the vehicle.
Description
The rear acoustic park assist (4 -channel acoustic park assist) deter ­
mines the d istance of the vehic le from an obstac le using u ltrasonic
sensors. The sensors are in the rear bumper. The volume and the
pitch of the chimes can be adjusted through the menu display
=> page 27.
The range at which the sensors start to m easure is about :
To the side
Center rear
Acti v atio n
2 feet (0 .60 m)
5 feet (1.60 ml
The pa rking assist is activated when rever se ge ar is engaged . A brief
tone confirms that the system is activated .
Backing up
Distance warning when backing up starts when an obstacle is
detec ted in the range of the park ass ist system . As the distance
decreases, the time interval between the aud ible tones becomes
shorter .
When the distance is less than 1 foot (0.30 m) , the tone becomes
continuous . At this point you should stop backing up.
Please note that low objects a lready signalled by a warning can
disappear from the sys tem's detection range and wil l not continue
t o be signa lled . ..,
I • •

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Intelligent technology
Notice about data recorded by
vehicle control modules
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders".
Some state laws restrict the retrieval or downloading of data stored
by EDR's that were installed in a vehicle for the express purpose of
retrieving data after an accident or crash event w ithout the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, engine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehic le-related data
during norma l vehicle opera tion for diagnostic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehic le speed, direction,
braking as well as restraint system use and performance in the
even t of a crash or other condition . Stored data can only be read and
downloaded with special equipment.
Electronic Stabilization Program (ESP)
Genel'61
The Electronic Stability Program increases driving
sta bility.
Fig . 13 0 Cente r
cons ole with ESP
sw itch
With ESP, control over the veh icle is increased in situations when
the vehicle is close to the limits of grip, such as during acce leration
and in curves. ESP reduces the risk of skidding a nd improves vehicle
stability under all road conditions . It operates at all speeds .
The Anti-Lock Brake System (ABS), E lec tronic Differentia l Lock (EDS)
and Anti-Slip Regulation System (ASR) are integrated in the Elec­
tronic Stability Program .
H ow ESP work s
The ESP control unit processes the following data from high-sensi ­
tive sensors: the rotational speed of the vehicle about its vertica l
axis, fore -and -aft and lateral acceleration forces, brake pressure and
steering angle.
Using steering ang le and vehicle speed, the direction the driver
wishes to travel is determined and continuously compared with
actual vehicle behavior . If the two do not match, for example when

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Electronic differential lock (EOL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
General notes
The electronic differential lock (EDU helps the car to start moving,
accelerate and climb a gradient on surfaces providing poor or
almost no grip. Without EDL, this would be difficult, if not impos ­
sible.
How the system works
Th e EDL operates automatically. It monitors the rotational speed of
the drive wheels on an axle with the help of the ABS sensors
=> page 187. If a noticeable difference in rotational speed between
the drive wheels on one axle is detected (e.g. on slippery ground on
one side), the spinning wheel is braked, thereby transferring power
to the other drive wheel or wheels (all-wheel drivel. This is done up
to a speed of about 60 mph (100 km/hl. Noises from the brake
system signal that wheel spin is being controlled.
Driving off
When driving off, always be sure to keep road conditions in mind as
you accelerate . If one drive wheel spins because it is on a surface
with less grip, gradually increase the pressure on the accelerator
pedal until the car starts to move. The wheel less able to transfer
power spins.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads, the EDL cuts out temporarily . The
vehicle remains operational and behaves in the same way as a
vehicle without EDL.
As soon as the brake has cooled down, EDL switches on again auto­
matically.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal. Even
with the EDL working, the drive wheels can spin and reduce your ability to control your car. -Risk of crash!
• The increased safety afforded by EDL does not mean that you
can take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i] Tips
If a fault occurs in the ABS, the EDL is also not functioning . This is
indicated by the ABS warning light=> page 20. •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti-Slip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP). When the vehicle starts up and acceler ­
ates , the wheels are prevented from spinning by adjusting the
engine power to match the amount of grip available from the road
surface .
How the system works
ASR performs automatically, i.e. without the driver's intervention .
With the aid of the ABS sensors => page
187, ASR monitors the
speed of the driven wheels. If the wheels start to spin, the engine
torque is reduced automatically until the tires find enough grip to
lock onto the road surface . The system is active across the entire
speed range.
The ASR works in conjunction with the ABS. If a malfunction should
occur in the ABS, the ASR will also be out of action .
~

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•
& W ARNING (continu ed )
• All four wheels must be fitted with radial tire s of the same type ,
s ize (rolling cir cumference ) and the same tread pattern . Driv ing
with different t ires redu ces vehicle h andling and can lead to a loss
of contro l.
• If the spare tire is not the same a s the tires that are mounted
on the vehicle -for e xample with winter tires -only use the spare
tire for a short period of time and dr ive with extra c are . Refit the
norm al road wheel as soon as safely possible .
• Never drive faster than the maximum speed for which the tires
on your vehicle are rated because tires that are driven faster than
their rated speed can fail suddenly .
• Overloading tires cause heat build-up , sudden tire failure ,
including a blowout and sudden deflation and loss of control.
• Temperature grades apply to t ires that are properly inflated and
not over or underinflated .
• For te chnical reasons it is not always possible to use wheels
from other vehicles -in some cases not even wheels from the
same vehicle model.
• If you install wheel trim discs on the vehicle wheels , make sure
that the air flow to the brakes is not blo cked . Redu ced airflow to
the brakes can them to overheat , in creasing stopp ing distances
and causing a collision .
• Run flat tires may only be u sed on vehicle s that were equipped
with them at the fa ctory . The vehicle must have a chassis de signed
for run flat tires and a factory -installed tire pressure monitoring
system* that indicates a loss of tire pressure. In correct use of run
flat tires can lead to vehicle damage or accidents . Check w ith an
autho riz ed Audi dealer or tire specialist to see if your vehicle can
be equipped with run flat tires . If run flat tires are used, they must
be installed on all four wheel s. Mixing tire types is not permitted .
0 Note
• For techn ica l reaso ns, it is not genera lly poss ib le to use t he
whee l rims from other vehicles. This can hold true fo r wheels of the
same vehicle type .
• I f the s pare t ire is d ifferent from the tires that you have mounted
on your vehicle ( fo r example win te r ti res or wide p rofile tires), then
use the spa re tire for a short period of time on ly and drive with extra
care. Replace t he flat tir e w ith the tire matching the others o n your
vehic le as soon as possib le.
• If you s hould put different whee ls a nd tires on your ve hic le (e.g.
winter wheels and tires), you must be certain that the whee ls and
t ires are co mpa tibl e w ith the tire pressure mon itor in g syste m*.
Otherwise the system w ill reg ister a malfunction and a fault
m essage w ill be d isplayed . For more info rma tion, co ntact your Aud i
dea ler.
0 Note
• When installing new tires, be careful not to damage the va lves or
tire p ressu re m on itoring system senso rs* .
• N ever drive without the valve stem cap. The valves could get
da mage d.
• I f the sensors must be replaced, then the valve must also be
r eplaced at the same time.
ci> For the sake of the environment
Dis p ose o f old tir es in acco rdance with the local requ ireme nts .•
Uniform tire quality grading
• Tread wear
• Traction AA A B C
• Temperature A B C
Vehicle care
I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
• Transmitters with the same frequency , such as radio head­
phones in the vehic le or radio equipment, can cause a temporary
disruption of the system through excessive electromagnetic fields .
• Elimina te the interference if possible/if you can and then
proceed as follows : Turn off the engine for 20 minutes . T hen drive
another
1 0 min. If the warning light comes on aga in, you should
contact your authorized Audi dealer immediately to have the problem corrected .
• Do not use commercially avai lable tire sea lants. Otherwise, the
e lectrical componen ts of the tire pressure monitoring system* wil l
no longer work properly and the sensor for the tire pressure moni­
toring system * will have to be replaced by a qualified workshop .•
Run-flat tires
Ap plies to ve hic les : w it h R un -f la t tires
Introduction
Run-flat tires help keep you moving if a tire goes flat.
Re inforced sidewalls give the tires run -flat capability if t ire pressure
is lost .
We recommend that run -flat tires only be mounted on vehicles that
were origina lly equipped with these special tires at the factory and
have a Tire Pressure Monitoring System.
Run-flat tire s can be identified by the letter s "RSC" on the tire side ­
wa ll.
If you do change the tires on you r vehicle from normal to run -flat
tires , you must buy the special rims required for run -flat tires, and
the Tire Pressure Mon itoring System must be reprogrammed by an
authorized Audi dea ler or other qual ified workshop.
What do run -fl at tires do ?
These specia l tires have run-flat capabilities that help keep you
moving if a tire loses pressure and goes flat. Under favorab le condi -tions tires can be driven
a
t lea st 30 mile s (50 km ), but you must not
drive
fa ster than 50 mph (80 km/h )=> page 259, "Driving with run ­
flat tires".
The Tire Pressure Monitoring System constant ly checks the air pres ­
sure in the tires. If the run-flat system is active (shown in the center
display), you must inspect the affected t ire or t ires and then decide
whether to cont inue dr iving. Be sure to fol low these tips
=> page 259, "Driving with run -flat tir es" .
When it is n ot po ssible to c ontinue dri ving, ev en with
run-flat tir es?
• I f the Electronic Stabi lization Program (ESP) is not work ing o r
keeps coming on.
• I f the Tire Pressure Monitoring System does not work.
• I f the tire has been severely damaged, in a crash, for example .
T he t read can separate from a damaged tire as the wheel turns , and
hit parts of the vehicle, such as the fuel tank filler neck, fuel lines or
brake lines.
• Do not con tin ue d riving if severe vibra tion occurs or if the tire
starts to smoke because the tire is running hot.
• Do not conti nue drivi ng if da mage to the tire, such as cracks in
the sidewal l, appears .
& WARNING
Improper use of run -fl at tires can cause ve hic le da mage th at can
le ad to los s of vehicle control , a crash and seriou s personal injury .
• Run-flat t ires can only be used w ith spe cial rims .
• Run -fl at tires must always be monitored with a properly
programmed Tire Pre ssure Monitoring Sy stem.
• Alway s inspect a tire that ha s lo st air to make sure it i s safe to
drive with the tire in the run -flat mode .
• Never dr ive with run -fl at tire s th at have been dam aged in a
colli sion.