sensor AUDI TT ROADSTER 2008 Owners Manual

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
•
'

• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambien t air temperature.
• When tires are replaced, the sensors and valves should not be
exchanged. The valve core, nut, valve sea ling and sea l washer
(replacement kit) needs to be replaced. If necessary, the valve and
the wheel electronics have to be rep laced .
• If you should put different wheels and tires on your vehicle (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compatible with the tire pressure monitoring system.
Otherwise the system will register a malfunction and a fault
message will be displayed. For more information, contact your Audi
dea ler.
• Adjust the tire pressure and store the pressure in the tire pres ­
sure monitoring system to the load you are carrying .•
Significant loss of air pressure \-,1
The yellow symbol appears in the event of a significant
loss of air pressure.
Fig. 28 Display: yellow
symbol with message
If the • warning light in the instrument cluster comes on
and then the ( symbol appears in the display~ fig. 28,
pressure in at least one t ire is too low.
Controls and equip ­
ment
Driver inform ation system
Stop driving as soon as possible without endangering
yourself and other drivers on the road .
- Inspect all tires.
Change the tire if necessary ~ page
267.
The ._ warning light in the instrument cluster comes on when the
tire is significantly underinflated .
In addition, the tire symbol(_, appears in the display together with
the message
Please check tire pressure => fig. 28.
After a few seconds, the message disappears again. If you would
like to show the message again, press the Set/Check button
=>
page 12, fig. 2 ©-
[ i ] Tips
• In the case of an intentional loss of air pressure, for example,
when re -adjusting tire pressure, this has to be stored again after ­
wards=> page 44.
• Tire pressure must only be adjusted when the temperature of the
t ires is about the same as ambient air temperature.
• The yellow symbol disappears, when the tire pressure is
corrected and the new pressure is stored in the system=>
page 44.
• After changing a wheel or replacing a wheel with the spare tire
you have to adjust the tire pressures on a ll wheels. In add ition , you
must then initia lize the new tire pressures in the tire pressure moni ­
toring system =>
page 44. •
I • •

Driver inf ormation sy ste m
Storing tire pressures
Correct storage of specified pressure is the basic require­
ment for reliable tire pressure monitoring.
F ig . 29 S ET -butt on:
T ire pressure mon i­
t or ing syste m
In order for the tire pressure monitori ng system to operate
appropr iately, you have to re-save the specified p ressures
whenever you adjust tire pressures, for example when the load co nd ition of your vehicle changes. Proceed as fo llows:
Corr ecting tir e pr es sure
Check the pressure in the t ires.
- Adjust air pressure as needed to comply w ith the infor­
mat ion on the label located on the driver's side B -pillar
(visible when the door is open) .
Saving tire pressures
-Turn on the igniti on.
- Press the button :::> fig. 29 for app rox imately 5 seconds.
You will hear a beep and the symbol in the instrument
cluster flashes three t imes .
All pressure warning indicators in the d isplay will be canceled. Following each intentional change in specified pressures, ti
re pres ­
sures must be resaved.
After the pressures are saved, the tire pressure monito ring system
measures the current tire pressures and saves them as the new
spec ified pressures .
[ i ] Tip s
• The tire pressure is shown on the tire pressure labe l. The tire
pressur e lab el is located on the driv er's sid e B-pillar (visible when
the door is open). The tire pressure label l ists the recommended
cold tir e inflation pr essur es for the vehic le at its maximum capacity
weigh t and the tires that were on your vehicle at the time it was
manufactured . For recommended tire pressures for norma l load
conditions, please see chapter~
page 242.
• The tire pressure monitoring syst em he lps the driver to keep an
eye on tire pressures. But the driver still has the responsibility for
maintaining the cor rect tire pressure .•
Wheel change
If a wh eel is ch anged , the wheels tha t were exchan ged
have to be re -programmed.
- Tu rn on the ignition.
- Press the button :::> fig. 29 for approximately 5 seconds .
You will hear a beep and the symbol in the button flashes
three times.
Programming is necessary :
• after the t ires have been rotated on the vehicle, or the spare tire
is used,
• if tires with new wheel sensors are used .
All pressure warning indicators in the disp lay wil l be canceled . The
system malfunction error message will not disapp ear until the .,_

vehicle is underway. With pressing the button=> fig . 29, the re­
programming of the new sensors and storing of actual pressures
starts . This learn ing phase can take up to 10 minutes driving time.
During the learning process the tire pressure monitoring system is
not avai lable. •
Malfunctions T =»'\,AC.:
A malfunction can have various causes.
Fig. 30 Display:
System malfunction
If the t warning light in the instrument cluster flashes for approxi ­
mately one minute and then remains continuously illuminated and
additionally the
r fin'-=> fig. 30 symbo l appears in the display, the
tire pressure monitoring system is not available. This can have
various causes .
• If the message appears at the end of the learning process, the
system cannot recognize the wheels installed on the vehicle. This
can be because one or more wheels without a whee l sensor were
installed.
• A wheel sensor or other component may have failed .
• During initia lization the system has detected more than 4 wheels
on the vehicle, for example whi le driving next to another car with a
tire pressure monitoring system.
Controls and equip ­
ment
Driver inform ation system
• A wheel change was made but the button => page 44, fig. 29 was
not pressed .
• Audi replacement parts were not used.
• If snow chains are being used, system function can be compro­
mised due to the shielding properties of the chains.
• The tire pressure monitoring system may not be available
because of a radio malfunction.
• 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 e lectromagnetic fields.
• Eliminate the interference if possible/if you can and then
proceed as follows: Turn off the engine for 20 minutes . Then drive
another 10 min. If the warning light comes on again, you should
contact your authorized Audi dealer immediately to have the
problem corrected.
• Do not use commercially available tire sealants. Otherwise, the
e lectrica l components of the tire pressure monitoring system will
no longer work properly and the sensor for the tire pressure moni­
toring system will have to be replaced by a qualified workshop. •
Certification
This device complies with part 15 of the FCC rules and RSS-210.
Operation is subject to the following conditions:
• this device may not cause harmful interference, and
• this device must accept interference received, includ ing interfer ­
ence that may cause undesired operation.
The receiver 5WK49069 uses the same schematic, assembly, layout
and PCB as 5WK49097 . 5WK49097 is a multi channe l receiver and
5WK49069 is a single channel receiver. They only differ in: SAW -
Filter V1_4 was changed from A2C00038979 to V1_2 A2C00032378,
Inductor L5_3 and L6_233nH were changed to L5_2 and L6_2 47nH.
BAND PASS FILTER V3_2 was changed from A2C00038762 to V3_3
A2C00036085. V 10: ATIC75 C1, A2C000029505 was changed to V10: .,,,
I • •

Clear vision
Ap plies to vehicles: with light senso r package
Sensor activated head and tail light control
In the "AU TO" position light sensors swit ch the he ad and
t a il lights on and off.
F ig . 62 Instru ment
pan el: light switch in
AUTO po siti on
T he se nsor-activated low beams have the same c haracteris­
t ics as the headlig hts=>
page 69.
Activating
- Tur n th e lig ht s witch => fig. 62 t o p ositi on AUTO.
Deactivating
- Turn t he light swi tch to position 0 .
In the switch position AUTO the automatic head -and taillight
control
i s activated . The correspo nding symbol on the light swi tch
is lit .
With automatic head lights, the high -beam function is also avai lab le,
bu t with one restrict io n: If you have not switched the h ig h beams
back to low beams during automatic headlight operation (for
example, afte r driving through a tun nel), on ly the low beams come
on the next time automatic headlights are switched on. To use the
h igh beams, you first have to pull the high beam lever back and then
push the lever forward again. Parking
lights, headlights, fog lights and the rear fog light can be
swi tch ed on manually using the ligh t switch ~
page 69.
Light sensors located in the inside mirror housing and stem
constantly check the light conditions surrounding the vehicle. If
am bie nt brightness falls below a facto ry set value (e.g. wh en driv ing
into a tunnel), the head -and tai llights inc luding the license p late
ill um inat ion are automatica lly t urn ed on. When ambient br ightness
increases again, the external lights are turned off again~&.
Light sens or malfunction
If there is a light sensor malfunct ion, the symbol comes on in the
display . For sa fety reasons, the low beams are turned on perma­
nent ly with the switch in
AUTO . However, you can continue to turn
the lights on and o ff using the light swi tch . Have the light sensor
checked as soon as possible at a dealership .
& WARNING
• Automatic head- and taillight control is only intended to ass ist
the driver . This feature doe s not relieve the dr iver of hi s re spon si­
bil ity to check the headlights and to turn them on manually
ac cording to the current light and vi sibility conditions. For
e x ample , fog and rain cannot be detected by the light sensors .
Con sequently , always switch the headlights
io on under thes e
weather conditions and when driving
in the dark .
• Crashe s can happen when you cannot see the road ahead and
when you cannot be seen by other motor ists .
• Alway s turn on the headlights so that you can see ahead and
so that others can see your car from the ba ck .
[ i ] Tips
• I n the AUTO mode, the low beams are turned off when the igni ­
t ion is turned o ff. The remaining lights are turned o ff when the key
is taken out of the ignition lock. _.,

• Do not attach stickers to the windshie ld in front of the sensors as
this can disable the automatic head -and tail light control and the
automatic glare -dimming of the rearview mirror(s) .
• Always o bserve the spec ific loca l regu la tions f or your area when
to use your lights .
• I n the event of a light sensor mal function, the d river informa tion
display will show the symbol . If a light sensor malfunct ion is indi ­
ca te d , you must use the ligh t switch to turn the low beams on and
off .•
Daytime running lights (DRL ) (USA models )
The daytime running ligh ts are tu rne d o n auto maticall y
w hen t he ignit ion is s witche d on.
Activating functions
Fig . 63 Sw itch for
daytime running lights
- Move the right thumbwhee l@ "D RL" ~ fig. 63 to posi ­
t io n
(D .
Deactivating functions
- Mov e th e rig ht thum bwh eel "DR L" to posi tion @ .
Con tro ls and eq uip­
ment
Clear vision
T he daytime running lights can be turned on or off using this func ­
t ion. If the f unc tion is ac tive, the dayti me r unning ligh ts are turn ed
on automatically when the ignition is switched on .
The daytime running lights are activated
only when the light switch
=> fig . 63 @ is at the O or AUTO* position .
& WARNING
Never use daytime running lights to see where you are going . They
are not bright enough and will not let you see far enough ahead for
s afety , e speci ally at dusk o r when it is dark . Be aware of changes
in outside light conditions when you are driving and respond by
sw itching on your low beams
io.
0 Note
Alway s be aware of change s in outside light conditions while you
a re dr iving. Respond in time to fading daylight by turning the light
s witch to position
io (or "AUTO" if your car is equipped with this
feature)
to turn on your headlights .•
Daytime running lights (Canada models only)
W hen yo u turn on the ig nit io n the daytime running lights
will come on automatically.
The daytime running lights are activated only when the light switch
@ =>fig. 63 is e ither at the
O o r the :oo: position . Whe n the ignition
is switched on, there is a difference between vehicles with bi -xenon
lig hts and ha logen lamps :
• On vehicles with bi -xenon lights only the daytime running lamps
in the headlights will c ome on.
• On vehicles with halogen lights the front fog lights, side marker
lights and tail ligh ts come on automa tica lly
~
Vehicle care I I irechnical data

Front fog lights }0
Use the light switch to turn on the front fog lights.
Fig. 65 Fog light acti­
vation : light switch
position on vehicles
WITHOUT sensor light
Switching on the front fog lights }D
-Do not turn the light switch -'ti- -~ fig. 65 toward the fog
light symbol
- Turn the light switch to
~oo: or to !D.
- Pull the light switch to the first stop G).
When the front fog lights are on, the symbol }O next to the light
switch will illuminate.•
Contro ls and eq uip­
ment
Clear vision
Applies to veh icles: with Light se nso r package
Coming home /leaving home function (}J
The coming home/leaving home function switches on the
external lights on a vehicle parked in the dark to illumi ­
nate the surroundings.
Activating the function
Fig. 66 Dashboard
detail : coming
home/leaving home
switch beside lig ht
switch
- Tap the switch QJ ~ fig. 66. The indicator light in the
switch illuminates .
Deactivating the function
-Tap the switch QJ. The indicator light in the switch goes
out.
The coming home/leaving home function is controlled by light
sensors located in the inside mirror mount. The system is activated
if all of the conditions be low are fulfilled:
• The window in the switch ® illuminates.
• the driving lights and the ignition have been switched off
• the vehicle is parked in poor light or darkness with the sensors
detecting little or no light at all.
tJl>
Vehicle care I I irechnical data

Clear vision
Coming home situation
In
darkness, the activated system will turn on the headlights, side
marker lights , rear side marker lights , tail lights, and rear license
plate light as soon as the driver's door is opened from inside.
As long as one of the doors or the rear lid remains open, the set of
external lights will keep burning for about four minutes maximum.
To provide light for departure, the set of vehicle lights will keep
burning for about another 30 seconds after all doors and the rear lid
have been closed.
The factory-set time of 30 seconds until the lights are switched off can be adjusted if you prefer a longer or shorter duration. Have the
adjustment done by your authorized Audi dealer or a qualified work­
shop. The system can be adjusted to keep the lights burning for a
maximum of 60 seconds.
Leaving home situation
As soon as the vehicle is unlocked by pressing the
ti button on your
remot e control, the set of external l ights is switched on .
The external lights are switched off as soon as the driver's door is
opened from outside . Even if you had the system readjusted to keep
the lights burning for an extended time for coming home, the
external lights will be turned off if you do not open the driver's door
within 60 seconds after unlocking. See chapter "Opening and
Closing" in your Owner's Manual. If the lights are switched off
before you reach the driver's door, press the
a button once more to
turn them on again.
[ i] Tips
• Do not attach any stickers to the windshield in front of the two
light sensors, as this would interfere with both the automatic oper­
ation of the headlights and the automatic dimming of the inside
mirror(s). • If
the vehicle is remotely unlocked and locked three times in
succession, leaving home will not turn on the lights a fourth time to
safeguard the battery and lights.
• If you wish to use the coming home/leaving home function regu­
larly, you can leave it activated at all times without risking perma­
nent strain on the electrical system. As the system is controlled by
light sensors, it will only be energized in darkness .
• Frequent use of the coming home/leaving home function for
approaching and departing a vehicle parked in the dark will strain
the battery. This applies particularly if only short distances are
driven between stops . Occasionally drive longer distances to make
sure the battery is recharged sufficiently.
• If the fog lights have been switched on by the coming
home/leaving home function, they will always be switched off when
you switch on the ignition. •
Instrument panel illumination
The illumination of the instruments, displays and the
center console can be adjusted.
Fig. 67 Instrument
panel illumination
You regulate the brightness of the instruments with the left
thumbwheel
C J=> fig. 67. ~