2009 AUDI A4 CABRIOLET sensor

Applies 10 vehic les: with light senso r package
Sensor activated head -and tail light control
In the "AUTO" position, light sensors monitor outside light
conditions and s witch the head- and t ail lights on and off
as required.
Activating
F ig . 87 Instru men t
p an el: li ght sw itch at
A UTO pos ition
- Tur n the light switch ~ fig. 87 to positi on AUTO.
Deactivating
- Turn the light switch to posit ion 0.
In the switch position AUTO the automati c head -a nd ta il light
contr ol
is activated . The corresponding symbol on the light switch
is lit.
Light sensors located in the ins ide mirror housing and stem
constantly check the light conditions surrounding the vehicle . If
ambient brightness falls below a factory set value (e .g. when driving
into a tunnel), the head -and tai llights including the license plate
illumination are automatically turned on. When ambient brightness
increases again, the external lights are turned off again
=> & -
Contro ls and eq uip­
ment
Cle ar v ision
& WARNING
• Autom ati c head - and tailli ght control is only int ended to a ss is t
the driver . Th is feature does not reli ev e th e driver of h is res pon si­
bilit y to che ck the headl ights and to turn them on m anuall y
according to the current light and vi sibilit y condition s. For
e xa mple , fo g and r ain cannot be dete cted by the light s en sor s.
Consequently , alw ay s swit ch th e headlights
fD on under the se
we ather condition s and when driving in th e da rk .
• Crashe s can happen when you cannot s ee the road ahead and
w hen you cannot be seen by oth er m otori sts .
• Alway s turn on the headlight s so that you can see ahead and
s o that others ca n s ee your car fr om th e back.
[ i ] Tip s
• In the AUTO mode , the low beams are turned off when the igni ­
tion is turned off. The remaining lights are turned off when the key is taken out of the ignition lock.
• Do not at tach stickers to the windshield in front of the sensors as
this can disable the automatic head- and taillight contro l and the
automatic glare -dimming of the rearview mirror(s).
• Always observe the specific local regulations for your area when
to use your lights .
• In the event of a light sensor malfunction, the driver information
display wi ll show the sy mbol -.
If a light sensor malfu nction is indi ­
cated, you must use the light switch to turn the low beams on and
off. a
~ehicle care irechnical data

Clear vision
Applies to vehi cles : equip ped wit h Ligh t se nso r pa ckag e
Coming home /leaving home function gr!}
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 . 91 Dashboard
detail: coming
home/leaving home
switch beside light
switch
- Briefly press the knob g{!} => fig. 91 (colored dot) so it will
stand out from the panel.
Turn the knob to position
1.
Push the knob back in to secure its setting.
Deactivating the function
- Briefly press the knob g{!} => fig. 91 so it will stand out
from the panel.
- Turn the knob to position
0.
Push the knob back in to secure its setting.
The coming home/leaving home function is controlled by light
sensors located in the inside mirror housing and stem. The system
is activated if all of the conditions below are fulfilled: •
the knob
lJ has been turned to position 1
• 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.
Coming home situation
In darkness , the activated system will turn on the front fog lights, tail
lights, and rear licence 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 two minutes maximum.
To provide ligh t 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 Audi dealer or a qualified workshop . 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@ button on your
remote control, the set of external lights 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 them button once more to
turn them on again. .,_

[ i J Tip s
• 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 head ligh ts and the automatic dimming of the inside
mirror(s).
• If the veh icle is remotely un locked 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 wi thout risking perma­
nent strain on the electrical system. As the system is contro lled by
light sensors, i t wi ll only b e energi zed in darkness.
• Frequent use of the coming home/leaving home function for
approac hin g and departing a vehicle parked in the dark wi ll strain
the batte ry. This applies particularly if only short distances are
driven between stops . Occasiona lly drive longer distances to make
sure the battery is recharged sufficient ly.
• If the fo g lights have been switched on by the coming
home/leaving home function, they will always be switched off when
you switch on the ig nition. •
Contro ls and eq uip­
ment
Cle ar v ision
Instrument panel illumination
The ill umina tion of the ins trume nts, dis pla ys and the
cente r consol e can be adjusted.
9:3 6
02.11.2008
Fig . 9 2 Instru men t
pane l illum in a ti on
Press the"+" button to increase the brigh tness .
Press the" -" b utton to reduce the br ig htness.
Igniti on ON , light swit ch at @ .
With the ignition switched ON, the glow of instrument needles can
be adjusted to appear brighter or dimmer.
Ignition ON , light switch at :oo: or gD.
With the lights switched on, the brightness of instrument cluster
(i .e. needles, gauges and displays) and center c onsole il luminat io n
can be adjusted .
0 Note
The instrument c luster and center console i llumination ( gauges and
needles) comes on when you swi tch on the ignition and the
vehicle
headlights are off .
Be aware of the following difference between
models built to US or Canadian specifications:
• USA model s: illumination of the in strument cluster (gauge s and
needles ), dash and center conso le around the gearshift lever is
controlled
by a light sen sor located in the instrument panel. The .,
~ehicle care Technical data

Wiper and washer system
r.-·.
Windshield wiper ~
The windshield wiper lever controls both the windshield
w ipers and the washer system.
Fig. 9 7 W ind sh ie ld
wip er: leve r posi tion s
The windshield w iper lever=> fig. 97 has t he following posi­
t io ns:
On e-tou ch wiping
- Move the lever to position G), whe n you want to wipe the
windshield
briefly .
Intermittent wiping ~l (activating rain sensor )*
- Move the lever up to position 0 -
- Move swit ch @ up or down, to adjust the se nsitivity of
the rain senso r or to adjust the intermitte nt interval.
Low wip er speed
- Move the lever up to pos ition ® ·
Contro ls and eq uip­
ment
Cle ar v ision
High wiper sp eed
-Move the lever up to position @.
Automatic wiper /washer
- Pull the lever to pos iti on © (toward the steering w heel)
and ho ld.
Re lease t he lev er. The washer stops and t he wipers keep
going for about fou r seconds.
Turning off the wipers
- Move the lever back to position @ .
The windshie ld wipers and washer on ly work when the ignition is
turned on .
The rain sensor* is only activated with the wiper lever set to position
G). When it starts to rain, the rain sensor will automatically activate
the intermittent wiping mode .
To reduce the sensitivity of the sensor ,
move switch @down . To
increase the sensitivity, move the switch up. The highe r you adjust
the sensitivity, the faster the sensor wi ll react when it senses mois ­
ture on the windshield. The pauses between wiper turns depend not
only on the sensitivity setting, but on the vehicle speed as well.
During brief stops, e.g. at a red light, wiper motion will automati ­
cal ly be reduced to the next lower speed. Wipers already turning at
low speed. change to intermittent wiping.
When the ignition is turned on, the washer jets a re heated .
With the low beam headlights switched on, pull the wiper
lever
towards you only briefly to clean the windshield. Ho lding the wiper
lever would also engage the headlight washer system each time you
clean the windshield and would drain the washer fluid reservoir
prematurely. ..
~ehicle care irechnical data

Clear vision
& WARNING
• Wiper blade s are cru cial fo r safe driving ! O nly when they are in
good cond it ion are they able to clear the window s properly to
p ro vi de un comp romi sed vis ibility . Worn or damaged wiper blade s
are a safety hazard
=> page 8 7, "In stalling new w ipe r blades "!
• The rain sen sor is onl y de signed to a ssis t and support the
driver. It remain s ent irely the driver' s re spon sibility to monitor
o ut side weather condit ion s a nd to manually acti vate the wipers a s
soon a s rain or drizzle reduces vi sibility through the wind shield .
• The wind shield mu st not be treat ed w ith water -repellent mate ­
rials. They can increase glare under poor visibility conditions such
a s w etne ss, darknes s, or when the sun i s lo w on t he horizon . In
addition , they can cause the windshield wipers to chatter .
0 Note
In freezing or near freezing conditions :
• Always check that the wiper blades are not frozen to the g lass
before you turn the wipers on. Loosen a wiper b lade which is frozen
in place before operating the wipers to prevent damage to the wiper
b lade or the wipe r motor.
• Do not use the wipers to clear a frosted window . Using the
wipe rs 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 wi ndshield w iper system switched off (lever in position
0), otherwise the windshield wiper system could get damaged in the
car wash if it should suddenly come on .
[ i ] Tips
• The rain sensor is part of the 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 aga in. • I
f you switch off the ignition with the windshield wiper lever sti ll
in the interva l wipe position and then come back a while late r and
drive off, the rain sensor will reactivate itself after the vehicle speed
has exceeded 4 mph (6 km/h) .
• Worn or dirty windshield wiper b lades cause smearing which
can affect the operation of the rain sensor . Check the condition of
your windshield wiper b lades regularly .
• Make sure the washer fluid reservoir in the engine co mpartment
is topped off before going on a long trip. Look up=>
page 266 for
checking and f illing the washer container .•
Headlight washer system
The headlight washer system cleans the headlights.
Operate the w indshie ld wiper/washer system, leve r posi­
tion
© =>page 85, fig. 97, w ith the head lig hts switched
on
by h old ing the lever for longer than o ne second .
The washer jets extend forward out of the front bumper driven by
water pressure to s pray the front headlights with water .
You should inspec t the head lights regu larly (for examp le when refu ­
e ling) and c lean off any so lid 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 .•

& WARNING
The glass of the inside rearview mirror is layered and contains an
electrolyte to achieve its properties. Be aware of liquid electrolyte
leaking from a broken mirror glass. This liquid can cause irritation
to skin, eyes, and respiratory system. If you get electrolyte in your
eyes or on your skin, immediately rinse with plenty of water. If irri­
tation persists, seek medical attention.
0 Note
Liquid electrolyte leaked from a broken mirror glass will damage any
plastic surfaces it comes in contact with. Clean up spilled electrolyte
immediately with clear water and a sponge.
[ i] Tips
• If you switch off the automatic dimming function on the inside
mirror, automatic dimming of the outside mirrors will likewise be
disabled.
• Check to make sure there are no objects preventing light from
reaching the inside mirror.
• Do not attach any stickers to the windshield in front of the light
sensor, as this would interfere with the automatic operation of the
headlights and the automatic dimming of the inside mirror.•
Controls and eq uip­
ment
Clear vision
Outside mirrors
The outside mirrors are electrically adjusted.
Adjusting the outside mirrors
Fig. 101 Forward
section of driver's
armrest: power mirror
controls
Turn the adjusting knob to position (D => fig. 101 to
adjust the outside mirror on the driver's side.
Turn the knob to position
@ to adjust the outside mirror
on the passenger side.
Press the knob in the appropriate direction to move the
mirror surface so that you have a good view to the rear.
Folding both outside mirrors in flush*
- Turn the knob to position @.
The mirror surfaces are heated whenever you switch on the rear
window defogger regardless of the outside temperature.
You are well -advised to fold the outside mirrors in when maneu­
vering in tight spaces or when leaving the car parked close to other
vehicles.
Automatic tilt-down of passenger side outside mirror*
With the knob turned to position@:::::, fig. 101, the mirror on the
front passenger door will tilt downward slightly when you move the .,_
~ehicle care Technical data

• .___w __ a _r _m _ a _n_d_ c_ o _ ld __________________________________________________ _
Moreover, the air conditioning switches on again whenever you
press the fan speed or temperature buttons.•
Automatic air recirculation [~I
If outside air is polluted, an air quality sensor in the
vehicle will automatically s witch on the air recirculation .
Switching on air recirculation
-Press [~ J:::::, page 777,fig.130.
Switching off air recir culation
Press~ again, or
- press [AUTO J, or
- press[ ~).
The automat ic air recirculat ion mode should nor mally be left
switched on at a ll times.
The system is ready to operate approximately 30 seconds afte r yo u
turn on the ignition or start the vehicle. Fresh air enters the vehicle only during this initialization period .
I f the
air quality sensor in the air conditioning sys tem detects
exhaust fumes in the outside air, the control unit wil l either pass the
incoming a ir through the pol lution filter, or automatically switch on
the air recirculation .
The air conditioning syste m wi ll aut omatically swi tch o n the ai r
recirculation if it senses that the outside air is very po lluted. At the
same time, it wil l not al low any outside air to ente r the vehic le until
the a ir quality has improved .
T he air recircula tion operates for a maximum of
12 minutes. If the
w indows s tart to fog up whi le the air rec ircula tion is on, press[@!.
Under certain operating conditions (for example, if 1@1 or
[ci;;,, I are
pressed) the air recircu lation automatically switches off . If "ECON" is pressed, or if the temperature is below
-8 °C, the air recirculation
will operate on ly for
12 sec onds. •
Adjusting the fan speed 8 0
The automaticall y selected fan speed can be increased or
de crease d.
D
D
=
D
:c
"' "'
D
D
F ig . 131 Fa n speed
butt ons a nd di splay
ind ication
Press the 8 or G buttons in the center of the co ntrol
panel :::::, fig. 13 1 to adjust the fan speed to your comfort.
The air conditioning system automatical ly regulates the fan speed
in respo nse to the i nterior temperature . However, you can a ls o
adjust the fan speed manually . A line of sma ll bars in the center
display above the fan control but tons will retreat or ex tend to reflect
your adjustments to the fan speed .•
Air distribution
The aut omatically pr ogr am med air dis tribution ca n be
c ha nged m anu ally.
You can use the [ 0 I, (@ ] or [-0- J buttons separately or together in
combina tion . To swi tch back to the au tomatic air distribution
setting, either switch off the buttons you previously selected, or
press
[ AUTO J.

-L___:O~ n'.... t ~h~ e~r ~o~a ~ d:...._ _______________________________________________ _
-Swit ch off the e ngine an d rem ove the ignitio n key f rom
t h e ig nition loc k.
What else you should do when parking your vehicle on
an i ncline o r de clin e
Turn the s teering wheel so that if the vehic le sh ould start to ro ll, it
wi ll ro ll into the curb .
I f you are parking on a
decline (the fron t of your vehicle facing
downhil l), turn the front wheels to the right so that they point
toward the curb.
If you are par king on an incline (the font of your vehic le fac ing
uphill), turn the front whee ls to the lef t so that they point
away from
the curb .
Move the selector lever into the P position.
LJ}. WARNING
This is how you can redu ce the r isk of injury when leaving your
vehicle .
• Never par k the vehi cle where it c an come i n contact with dry
gra ss, spilled fuel or any other flammable materials .
• Never allow an yone -especi ally s mall ch ildren -to remain in the
vehicle when it i s locked . Locked doors make it more difficult for
res cuer s to acce ss the pas senger compartment in the e vent of a n
emergency _ Danger to life!
• Never leave children unsupervised in the vehicle . Children
c ould release the parking brake or move the gear shift lever out of
gear . The vehi cle could st art to roll awa y and cau se an a ccident .
• No matter wha t the sea son i s, the temperature in a parked
vehi cle can reach d angerous levels . •
Acoustic park assist
A pplies to vehicles : with 4 -ch an nel a co ustic park ass is t
Rear acoustic park assist
The rear acoustic park assist warns you of obstacles or
objects behind your car.
How it works
The acoustic park assist warning system (4-channel acoustic park
assist) uses ultr asonic sensors to warn yo u when you are
backing
your vehicle close to an obstacle . The system 's 4 sensors are located
inside the rear bumper .
Acti va ting
The rear acoustic park assist is ac tivated whenever you shift into
Reverse . You will hear a warn ing tone when the system is on .
Reverse
With the car backing up in reverse gear, the col lision warning sound
sets in at the fol lowing
approximate d istances to obstacles :
straight aft 5ft(1.5m)
angling aft off vehicle corners 2 ft (0
.6 m)
As the dis tance shr inks, the time interva l between the audible tones
grows shorter.
The sound changes to a continuous tone as soon as the remaining distance to an obstacle closes to less than about 1 ft. (0 .3 ml. The
steady tone cautions you that you have backed up hazardously
close and you ris k co llision by backing up any further .
Malfunctions in the system
If a warning tone is audible for about five seconds when you turn on
the ignit ion, there is a malfunction in the system . Have the prob lem
corrected by your authorized Audi dea ler. _,.