brake light AUDI TT ROADSTER 2008 Owner's Manual

HomeLink® -_______________ ___.
Homelink®
Universal remote control
Applies to veh icles: wit h Home link® unive rsa l rem ote cont rol
General information
The Homelink® feature can learn up to three radio
frequency codes for most current transmitters used for
operating garage doors, estate gates, home or outdoor
lighting systems, and other devices.
You must first program the Homelink® transmitter before you can
use the system~
page 121, "Programming the Homelink® trans­
mitter" .
In order to program the Homelink® transmitte r for devices utili zing
rolling cod e, a second person on a ladder who can safely reach the
garage door opener motor is recommended. It is also necessary to
locate the "learn" button on your garage door opener motor . Refer
to the operating instructions for the opener, as the location and
color of this button may vary by manufacturer .
You can still use the original remote control for the device at any
time .
& WARNING
• Never use the Homelink"" transmitter with any garage door
opener that does have not the safety stop and reverse feature as
required by federal safety standards. This includes any garage
door opener model manufactured before April 1, 1982.
• A garage door opener which cannot detect an object, signaling
the door to stop and reverse does not meet current federal safety standards. Using a garage door opener without these features
increases risk of serious injury or death .
Con tro ls and eq uip­
ment
& WARNING (continued)
• For safety reasons never release the parking brake or start the
engine while anyone is standing in front of the vehicle.
• A garage door or an estate gate may sometimes be set in
motion when the Homelink® remote control is being
programmed .
If the device is repeatedly activated, this can over­
strain motor and damage its electrical components -an over­
heated motor is a fire hazard!
• To avoid possible injuries or property damage, please always
make absolutely certain that no persons or objects are located in
the range of motion of any equipment being operated. •
Applies to vehi cles : wit h Home link ® un iv ers al re mote co ntrol
Programming the Homelink ® transmitter
The transmitter is programmed in two phases. For rolling
code transmitters, a third phase is also necessary.
0
Vehicle care I I
Fig. 115 Overhead
console: Homelink®
keypad ...
irechnical data

-L_!H~o~m~ e~L:!!in~ k~®~------------------------------------------------
Fig . 116 Front bumper ,
driver side: location of
transmitter unit
Phase 1: programming the overhead keypad
1. Make sure your vehicle is within operating range of the
remote controlled garage door opener.
2. Set the parking brake::::,
& in "Genera l information".
3. Turn the ignition on. Do not start the engine!
4. Press and hold the two outside Homelink® buttons
(D
and @f or approxim~tely 20 sec_onds until indicator
light@::::,
page 121, fig. 115 begins to flash. Then
release both buttons. Do not hold the buttons for longer
than
30 seconds.
- This procedure only needs to be performed
once. It
erases the factory-set default codes and does not have to
be repeated to program additional remote controls.
5. Press and hold the Homelink® button
(D , ® or @ until
the indicator light@starts flashing
slowly. Release the
button.
- The system will remain in programming mode for 5
minutes.
Go to the front of the vehicle and proceed with
phase 2.
Phase 2:
programming the bumper mounted transmitter
6. Hold the original remote control at a distance between 0-
5 in. (0-13 cm) from the bumper below the appropriate
headlight for your vehicle::::, fig.
116 (use the shortest
distance possible).
7 . Aim the remote control just below the driver side head ­
light.
8. Press and hold the activation button on the remote control.
- May be different in Canada. If so, press and re-press
(cycle) the activation button on your remote control every
two seconds.
9. The emergency flashers will flash three times (after
about
15-60 seconds) when the programming is
successful. Release the button on the remote control.
- To program more devices, repeat steps 4 to 9.
10. Press and hold the trained Homelink® button and
observe the indicator light @::::,
page 121, fig. 115.
If the indicator light is solid/continuous, programming is
complete and your device should activate when you
press and release the trained Homelink® button.
- If the indicator light blinks rapidly for 2 seconds and is
then a solid/continuous light, proceed with phase 3 to
program a rolling code device.
Phase 3: rolling code programming
- A second person on a ladder who can safely reach the
garage door opener motor is recommended.
~

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
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 189. 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 189, 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 .
~

-Intelligent t echnology
--- =---- ----"-!...!-------------------------------
After 15 cycles (deploy and retract), manual operation is suspended
fo r up t o 2.5 minutes . Above 75 mph (120 km/h), operation swi tches
to automatic mode .
& WARNING
Driving at higher speeds witho ut the re ar spoiler deployed can
impair handling characteri stics, making the vehicle harder to
c ontrol.
• Always make sure that the spoiler i s deployed when driving at
speeds over 85 mph (140 k m/h). If the rear spoiler warning /ind i­
c ator light in the in strument clu ster come s on , the rear spoiler
may not have deployed .
• Never drive at speed s higher than 85 mph (140 km /h ) if the
spoiler is not deployed . Have the spoiler inspe cted as soon as
po ssible by an authorized Audi dealer or qualified workshop.
• Always obey speed limits and other traff ic law s.
& WARNING
Improper operation of the rear spoiler can cause crushing injuries.
• Always make su re that nobody , especially children , is in the
way when the rear spoiler is deployed or retracted.
0 Note
Never push the vehicle or a pply force to the rear spoi ler -it cou ld be
damaged .
[ i ] Tips
Clean the spoi ler compartment every 2 to 3 months . The spoiler
compa rtment must always be free of ice, snow, leaves or other
debris. •
Braking
General "nformation
What aff ects braking effi cie ncy?
Operating condition s and driving habits
The brakes on today's automob iles a re sti ll sub ject to wea r,
depending large ly o n operati ng co nditions and driving habits~&.
On vehicles which are driven mostly in stop -and -go city traffic or
whic h are driven hard, the brake pa ds shou ld be checked by your
authorized Audi dea ler more often than specified in the
Mainte ­
nance
& Warranty booklet.
On steep slopes, you should use the braking effect of the en gine.
Th is way, you prevent u nneces sary wea r on the brake syste m. If you
must use your brakes, do not ho ld the brakes down continuous ly.
P ump the brakes at interva ls.
Moisture or road salt
U nde r certain co nditi ons, for example, when driving th rough water
or v ery heavy rain, or eve n after washing your vehicle, the braking
effec t can be red uced d ue to mo isture (o r in freezing c onditions ice)
o n the brake pads . A few cautious brake appl ica tions should dry off
the brake pads or remove any ice coat ings.
T he effe ctiveness of the brakes can be reduced when the ve hicle is
driven on a sa lt -covered road and the brakes are not used. Li kewise,
you clean off accu mulated sa lt co atin g fr om bra ke discs a nd pads
with a few cautious applications of the brake~&.
Corrosion
There may be a tendency for dirt to build up on the brake pads and
corr osi on to for m on the d iscs if the ca r is no t driven regu lar ly or
only for short trips with litt le use of the brakes .
I f the b ra kes a re not used frequently, or if co rros ion ha s formed on
the d iscs, it is adv isable to clean off the pads a nd discs by braking
firm ly a few times from a moderately high speed~& . .,_

___ D_ r_ iv _i_ n-' g"'""'- a_ n_d_ e_ n _ v_i_r _ o _n_ m_ e_ n_t _____________________________________________ _
- Lack of proper maintenance as well as improper use of the
vehicle will impair the function of the emission con trol system
and could lead to damage.
Even when the Emission Control System is operating properly, the
exhaust gas can have a su lfur -like exhaust gas smell under some
operating states . This depends on the su lfur content of the fuel
being used. Using a different brand of fuel may he lp, or filling the
tank with lead-free super grade gasoline. •
Avoid damaging the vehicle
When you are driving on poor roads, or over curbs, steep ramps,
etc., make certain that low-lying parts such as spoilers and exhaust
system parts do not bottom out and get damaged.
This is especially true for vehicles with low-slung chassis (sports
chassis) and fully loaded vehicles. •
Operate your vehicle economically
and minimize pollution
General
Your personal style of driving will determine the economy
of your vehicle, as well as exhaust and noise levels.
Fuel economy, environmental impact, and wear on your engine,
brakes and t ires largely depend on three factors:
• your personal driving style
• operating condit ions
• technical limitations If
you anticipate what you need to do next and drive economically,
you can easily cut your fuel consumption by 10-15 percent . This
section will give you some tips on how you can he lp the environ­
ment and your pocketbook .
[ i ] Tips
The consumption estimates as published by ENVIRONMENTAL
PROTECTION AGENCY (EPA) and Transport Canada may not corre­
spond to your actua l consumption on the road, which will vary
depend ing upon vehicle load and speed, road and weather condi­
tions, trip length, etc. •
Drive smoothly and keep a lookout ahead
Vehicles use the most fuel when they are accelerating.
Avoid unnecessary accelerating and braking.
Vehicles use the most fue l when they are accelerating . If you antici­
pate what is going to happen next, you will need to brake less and,
thus, accelerate less. Let the vehicle coast whenever possible -for
example when you see that the next traffic light is red. •
Avoid full throttle
Driving at moderate speeds saves fuel and improves your
mileage.
- Try and keep well below your car's maximum speed.
Acce lerating gently reduces fuel consumption, engine wear, and
does not disturb the environment.
Fuel consumption, exhaust emissions and engine noise increase
disproportionately at high speeds. If you drive at approximately
three quarters of top speed, fuel consumption wil l be reduced by
9J,,

Cleaning and prote ction BIii
------------------------------------=-----=-------
•
Ap plies to vehi cles : w it h C ast a llo y wh eels
Cast (light) alloy wheels
Cast (light) alloy wheels require special care.
-Wash the wheels w ith a sponge or hose brush eve ry
ot her week .
- For de ep cleaning afterwar ds, use only a dedicated
acid ­
free cast alloy wheel cleaner .
- Ru b a c oat of
liquid wax on to t he rims every t hree mon th.
B e sure t o reach and treat all parts of the rim .
To preserve the decora tive appearance of the cas t alloy whee ls,
some special care is necessary . In addition to road dirt and sa lt ,
b rake dust is also co rro sive . If left o n fo r to o long, brake dust can
cause pitting .
Use only special
ac id -free cleaners formulated for alloy rims . Safe
products are available at your Audi dea ler . Never leave the cleaner
on the r ims longer than specified on the label. If not rins ed off
promp tly, the acid contained in some cleaners can a ttack the
threads on the wheel bolts .
Never use abrasive or me tal po lishing cleaning agents . If the protec ­
tive coat ing has been chipped, e .g . by kicked up road dirt. touch it
up as soon as possib le .
& WARNING
• Moi sture and ice on brakes may affect braking efficiency
=> page 188 , "General information ". Te st the b rake s c arefully ea ch
time you wash the vehicle.
• Alway s read a nd heed all WARNINGS and other informat ion
=> page 200 . •
Body cavity sealing
T he body c avity sealing d oes not need t o be checke d.
A ll body cavities which could be aff ected by corrosion hav e been
given thor ough protecti on a t the facto ry.
This sealing does not require any inspection or add itional treat ­
ment . If any wax shou ld seep out of the cavity when the ambient
tempera ture is high , it can be removed wi th a p las tic sc raper and a
suitable solvent.
& WARNING
Solvent s can be dangerous.
• Benz ine is flammable and to xic . If you use benz ine for removing
the wax , keep sparks , flame and lighted cigarettes away . Never
dump benz ine on the ground , into open streams or down sewage
drains .
• Be sure to observe all safety and environmental regulat ions .
Follow all instru ctions on the container.
• Always read and heed all WARNINGS and the information
=> page 200 . •
Chassis
Have the undercoa ting checked for damag e from time to
time .
The lowe r body shell of your Audi is a lso thoroughly protected
against corros ion.
Any damage to the undercoating caused by road ha za rds sh ould be
repaired promp tly .
& WARNING
Too much unde rcoat ing in the wrong pla ces can cause a fire .
Vehicle care
I t •

-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. •

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
& WARNING (continued)
• The auxiliary electric fan is temperature controlled and can
switch on suddenly even when the engine is not running.
• The auxiliary radiator fan switches on automatically when the
engine coolant reaches a certain temperature and will continue to
run until the coolant temperature drops. •
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a quick glance.
Fig. 155 Engine
compartment: brake
fluid reservoir
Before you check anything in the engine compartment,
always read and heed all WARNINGS =>
& in "Working in
the engine compartment" on
page 220.
- Read the brake fluid level from the brake fluid reservoir
~ fig. 155. The brake fluid level must be between the
"MIN" and "MAX" markings.
The brake fluid reservoir is located behind the rear partition of the
engine compartment on the left side~
page 221 .
The fluid level may drop slightly after some time due to the auto­
matic adjustment of the brake pads. This is not cause for alarm.
If the brake fluid level falls
considerably below the "MIN" mark, the
brake warning/indicator light (U .S. models:
BRAKE , Canadian models:
ill) will come on~ page 20 and~ page 32. Do not continue to
operate the vehicle . The complete brake system should be thor­
oughly checked by an authorized Audi dealer or other qualified
facility and the cause corrected. If the brake fluid level is too low, the
brake warning/indicator light will illuminate. Contact an authorized
Audi dealer
immediately .•
Changing brake fluid
Have the brake fluid changed by an experienced techni­
cian.
Brake fluid absorbs moisture from the air. 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 will als o
decrease considerably and decrease braking performance.
Therefore, the brake fluid must be changed
every two years. Always
use new brake fluid which conforms to Federal Motor Vehicle Stan ­
dard "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficult to reach, therefore, we
recommend that you have the brake fluid changed by your autho­
rized
Audi dealer . Your dealer has the correct tools, the right brake
fluid and the know -how to do this for you.
& WARNING
• Brake fluid is poisonous. It must be stored only in the closed
original container out of the reach of children!
• Brake failure can result from old or inappropriate brake fluid.
Observe these precautions : .,,_

Checkin g and fillin g ---------------~-!':WIii
•
& WARN ING (co ntinued)
- Use only br ake flu id th at m eet s SAE spec ificati on J 1703 and
c onf orms to F ed eral Motor Vehi cle St and ard 11 6. Always ch ec k
w ith your a uthori zed A ud i de aler to m ake sure you are u sin g
the corre ct brake fluid . Th e co rrect typ e of br ake fluid i s also
indic ate d on the br ake fluid res ervo ir .
- The br ake fluid mu st be ne w. Heavy u se of the br ake s c an
c au se a vapor lo ck if the brake fluid i s left in the s yste m too
long. Thi s ca n seriou sly affe ct the eff iciency of the brake s as
w ell as your safety . This could resu lt in an a ccident .
0 Note
Brake fluid wi ll damage the paint of your vehicle.
Because of the prob lem of proper disposal of brake fluid as well as
t he special too ls required and the necessary expertise, we recom­
mend that you have the brake f luid changed by your authorized Audi
dea ler .•
Battery
General information
Your vehicle is equipped with a specia l battery, an AGM battery. This
battery is located in the luggage compartment and must be
replaced with an origina l equipment battery. Under normal oper ­
ating conditions, the battery is
maintenan ce-free .
Have the battery checked when you take your vehicle in for service.
You a re we ll advised to replace a battery that is olde r th an 5 years .
Disc onn ectin g th e batt ery t erm inal s
Some vehic le functions (power window regulators, for e xample) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the batte ry term inals are connected again. To
prevent this, the battery should only be disconnected from the
vehicle electrical system when abso lutely necessary for repairs.
V ehi cle s not dri ven for long period s
If you are going to le t your vehicle stand for a long t ime a nd not
drive it, you should remember there are electrica l components
which are still functioning and they will draw energy from the
battery and drain it, for examp le, the engine immob ilizer. To prevent
this, you can either charge the battery occasionally to keep it in
good working condition or you can d isconnect the negative cab le
on the battery.
W inter op era ti on
During the winter months, battery capacity tends to decrease as
temperatures drop. This is because more power is a lso consumed
while starting, and the headlights, rear window defogger, etc., are
used more often .
Avoid unnecessary power consumption, particularly in city traffic or
when trave ling on ly shor t distances . Let your au thorized Audi dea ler
check the capacity of the vehicle battery before winter sets in
=>
page 235 . A well charged battery will not on ly prevent start ing
p rob lems when the weather is cold , but wi ll a lso last longer .
Replacing battery
The new battery must h ave the same capacity, voltage (12 volts},
amperage, construction and p lug sea ling, as the origina l battery.
Specifications are l isted on the battery hous ing. Batteries specially
developed by Audi fulfill the ma intenance, output, and safety
requirements.
When installing the battery, make sure the ignition and all electrical consumers are switched off=>
0. .,_
Vehicle care I t •

Fuses and bulbs -
----------------
Equipment No. Equipment
Amps
Engine relay, fuel tank control unit, Airbag Off
16 A/C system (control unit) 10
1
light, light switch (switch illumination), diagnos-10
tic connector
17 Tire pressure monitoring system (control unit) 5
18
Not used
ABS, ASR, ESP, brake light switch
5 19
Not used
3 AFS headlight (left) 5
Not used
Oil level sensor (extended maintenance interval)
(WIV), tire pressure monitoring system, switch
21 Fuel injectors (gasoline engine) 10
4 for Electronic Stability Program (ESP), AFS head-5 Wind deflector (Roadster) 30
lights (control unit), A/C system (pressure sen -23 Horn 20 sorl, backup light switch
Automatic headlight range control, AFS head-
24 Transmission (control unit) 15
5
light (right)/ manual headlight range control, 5/10
25 Heater rear window Coupe/heated rear window 30/20
halogen headlights Roadster
Control unit for CAN data transfer (gateway),
26 Driver's side power window 30
6 electromechanical steering, automatic transmis-5
27 Passenger's side power window 30
sion shift gate
28 Not used
Acoustic Park Assist, automatic dipping interior
rear view mirror, garage door opener, heatable
29 Washer pump 15
7
windshield washer nozzles, washer pump, wind 5
30 Cigarette lighter 20
deflector relay (Roadster)
31 Starter 40
8
Haldex clutch 5 32 Steering column module 5
9
Control unit Audi magnetic ride 5 33
Instrument cluster 5
Airbag control unit 5 34 Radio navigation system, radio 15
1 1 Mass airflow sensor, crankcase heating 5/10
35
Audio amplifier 30
12 Door control unit (central locking driver/passen-10
36 Engine (control unit) 10 ger)
13 Diagnostic connector 10 37 CAN (Gateway) 5
Rain sensor, automatic transmission shift gate 5 38 Not used
15 Roof
light (interior lighting) 5 39 Not used
• Do-it
-yourself service