2009 AUDI S4 CABRIOLET battery

Master key battery replacement
Each master key contains a battery housed under the
cover.
Fig. 39 Master key:
opening the cover
We recommend having the battery changed by an autho­
rized dealership. However, if you wish to replace the dead
battery yourself, proceed as follows:
- Pry apart the base=> fig. 39
@ and the cover @carefully
with a coin.
- Remove the cover (arrow).
- Remove the dead battery from the cover.
- Install the new battery. Please make certain that the"+"
sign on the battery faces down. Correct polarity is shown
on the cover.
- Place the cover with the new battery on the key base and
press both parts together.
W For the sake of the environment
Dispose of dead batteries properly so as not to pollute the environ ­
ment.
Contro ls and eq uip­
ment
Opening and closing
[ i] Tips
The replacement battery must be the same specification as the
original. •
Electronic immobilizer
The immobilizer helps to prevent unauthorized use of
your vehicle.
A computer chip inside your key automatically deactivates the elec­
tronic immobilizer when you insert the key in the ignition lock.
When you remove the key from the ignition lock, the electronic
immobilizer is automatically activated once again.
If an unauthorized key was used,
SAFE is displayed continuously in
the odometer display field.
in. WARNING
Always take the key with you when you leave the vehicle. The key
can disarm the electronic engine immobilizer and permit an unau­
thorized person to start the engine and enable operation of the
vehicle systems such as power window or power top leading to
serious personal injury.
[ i] Tips
• Your engine can only be started using the factory -equipped key.
• You may not be able to start your vehicle if an ignition key of a
different vehicle make is also located on your set of keys.
• For Declaration of Compliance to United States FCC and Industry
Canada regulations
~ page 320. •
~ehicle care irechnical data

& WARNING (co ntin u ed)
• Do n ot l ea ve c hildr en i ns ide th e vehicle un sup erv is ed. In an
e m erg en cy it w ould be impo ssible to op en the door s from the
out side without the key.
[ i ] Tip s
• In the event of a crash with airbag deployment all locked doors
wi ll be automat ically unlocked to give access to the vehicle occu­
pants from the outside.
• If the power locking system should fail, you can st ill open the
fue l tank flap in an emergency~
page 248.
• You are we ll advised not to keep va luables inside an unattended
vehic le, visible or not. Even a properly locked vehicle cannot provide
the security of a safe! •
Keyless entry remote control
General description
The remote controls allows you to:
• lock or un lock the vehicle
• selective ly un lock the rear lid.
The turn signals wi ll flash briefly whenever you lock or unlock the
vehic le . Also, the interior light will come on or go off whenever you
open or c lose the driver's door.
The transmitter and battery are located in the head of the remote
control. The receiver is located inside the vehicle. The maximum
effective range depends on severa l things. Remember, if the battery
is weak, the effective range decreases .
The remote -control key contains a fo ld-ou t key that you can use to
manual ly lock or unlock the vehicle and to start the engine .
Controls and eq uip­
ment
Op enin g and clo sing
If you need to replace the remote control, or if you need to have it
repaired, you must see your authorized Audi dealer. Only then can
you use the key again. •
Unlocking and locking the vehicle with the
remote control
How the remote control works.
To unlock the v ehicle m
- Press button @.
Fig. 40 Remo te
co ntr ol: fu nctio n
b utt ons
- Press button @two times within two seconds to unlock
all doors and the rear lid .
To lock the vehicle [II
-Press bu tton @ => &, in "Gener al descri ption" on
page 50.
- Watch that all turn signal lights flash once.
To unlo ck r ear lid only ,c::;
- Press button @for approx imate ly one second.
~ehicle care Technical data

To unlock r ear lid
- Pu ll the switch c:::::5 ~ page 56, fig. 48 in the driver's door.
To open re ar lid
- Raise the rear lid.
The remote rear lid re lease is deactivated automatically if you lock
the rear lid using the key . This enables the driver to lock the luggage
compartment permanently with the key and prevent unwanted
access to the trunk .•
Anti-theft alarm system
Description
The anti-theft alarm triggers an alarm if anyone attempts
to break into the vehicle.
The anti -theft a larm system triggers an audible alarm and turns on
the emergency flasher if an unauthorized interference with the
veh ic le is sensed by the system.
How i s the anti -theft alarm syste m switched on ?
The anti-theft alarm system is switched on when you lock the
driver's door manually using your key, o r when you use the remote
control. The system is activated approx imately 30 seconds after the
vehic le is locked. The indicator light on top of the door trim start
fl ashing rapid ly for 30 seconds and then b link slowly.
How i s the anti -theft al arm syst em switch ed off ?
The anti-theft alarm system is switched off only when you use the
remote contro l to unlock your vehicle . If you do not open a door
with in 60 seconds after you have unlocked with the remote control,
the vehic le will lock itself again automatica lly.
Controls and equip ­
ment
Op ening and clo sing
If you lock just the driver's door using your key, the front
passenger's door, the rear and the fuel f iller flap remain locked.
If you use the vehicle key to unlock the driver's door, the other
doors, the rear lid and the fuel tank flap will remain locked . The
a larm system will not be deactivated unless you insert the key in the
ignition switch within 15 seconds and turn on the ignition. If you fai l
to do this, the a lar m wi ll sound.
When will the anti theft alarm system be triggered?
When the vehic le is locked, the a larm system monitors and protects
the following parts of the vehic le:
• engine compar tment
• luggage compartment
• doors
• vehic le incline
• ignition
• factory installed radio.
When the system is activated, the alarm will be triggered if one of
the doors, the engine hood or the rear lid are opened, or if the igni ­
tion is turned on or the radio removed or if the vehicle incline has
been changed.
The ant i-theft alarm system will also go off when you unlock the rear
lid with your key and open it. The alarm is switched off again when
you close the rear lid.
The anti-theft alarm system will also go off when the battery is d isconnected.
You can also trigge r the alarm by pressing the PANIC button on your
remote control. This will alert other people in case of emergency.
Press the
PANI C button again to turn off the a larm. .,_

Opening and closing
Closing the windows
- Pull the switch up to the first stop and hold it there until
the window has risen to the desired position.
- Pull the switch quickly to the
second position : the
window will automatically close all the way=>
& in
"Contro ls".
Operating switch © =>page 59, fig. 50 you can open/close all
windows centrally=> & in "Controls".
[ i] Tips
The windows can still be opened and closed for about ten minutes
after the ignition has been turned off. The power windows are not
shut off until one of the front doors is opened. •
Switch in the front passenger 's door
...
~ i ., m
Fig. 51 Switch loca­
tion front passengers
door
The power window switch has a two-position function :
Opening the windows
-Push the switch to the first stop and hold it there until the
window has lowered to the desired position. - Push the switch briefly
to the
second stop: the window
will automatically open all the way.
Closing the windows
Pull the switch up to the first stop and hold it there until
the window has risen to the desired position.
- Pull the switch quickly to the
second position: the
window will automatically close all the way.
[ i] Tips
The windows can still be opened and closed for about ten minutes
after the ignition has been turned off. The power windows are not
shut off until one of the front doors is opened .•
Reactivating the system after battery
disconnection
Reactivating the convenience close/open feature
If the vehicle battery is disconnected and then reconnected,
the automatic closing and opening function will not work
until it is reactivated. To reactivate this feature, perform the
following steps:
Reactivating close/open feature
-Pull and hold the power window switch until the window
is completely closed.
- Release the switch.
- Pull the switch again for one second. The automatic
closing/opening is now reactivated. •

Power top
Normal operation
General information
The power top is designed for quick and easy operation. The power
top opens and closes automatically by itself . When the top is folded
dow n, it is stored in a special compartment and hidden under a
cover.
The power top is both wind -and waterproof under normal oper ­
ating conditions . Only under extreme weather conditions, for
examp le, a violent burst of rain or torrentia l rainfall, can a few drops
of water possibly form inside the roof. This is normal and no cause
for concern.
To maintain the appearance of the power roof and to keep it water ­
proof , read the information on roof care in=> page
233, "Power top
care". In addition to this, please note the following:
• Always open or close the power roof on ly when it is clean . Other­
wise particles of dirt can scratch the rear window when the power
top fo lds down . The particles can chafe a nd damage the fabric over
a period of time. It is a lso important to remove ice and snow before
opening the power roof.
• Do not use a sharp object or any other tools, which cou ld scratch
t he fabr ic when removing ice or snow. A normal ice scraper can be
used to remove ice from the rear window.
• The power roof should be opened only when it is completely dry .
I f you open and store the power roof when it is wet, unsight ly marks
or mildew can form if left for long per iods of time .
• Never leave the roof open for severa l weeks at a time. You should
close it occasiona lly to prevent discoloration in the folds of the
fabric and to allow the creases to smooth out. This is especially
impor tan t if t he top has once been s tored away when it was not
completely dry .
Controls and equip ­
ment
P ow er top
• Do not open the power when it is colder than 32 °F (0 °C). At
these temperatures, the fabric is less flexible.
L1}. WARNING
• For safety reasons never open or close the power top when the
v ehi cle is moving .
• Never drive the vehicle without the power top securely locked
in the closed po sition . If it i s not firml y en gaged , the top can be
blown open by the airstream and cau se in jur ies and damage to the
vehi cle . - Risk of cr ash!
• When opening and closing the power top m ake sure to keep
yo urself and other s clear of all moving pa rt s. Risk of injury!
• During opera tion of the power top the head clearance in the
re ar of the vehi cle is r edu ced . Alw ay s m ake sure that rea r seat
p assen gers keep clear of the power top a s it is being opened or
cl osed . Ri sk of injury!
[ i ] Tip s
• The power top can only be operated w ith the ignition switched
on.
• To avoid unnecessary strain on the battery, you should not open
and c lose the top several times in a row when the e ngine is n ot
running.
• The display in the ins trument cluster will indicate if a pr otective
feature of the power top has been activated or if a malfunction
occurs ~ page
64.
• In case of a ma lfunction the power top can be operated manu­
a lly. This is intended for a limited time only~ page
68, "Opera te the
power top manually" . T he cause of the malfunction should be
tracked down and repaired by an au tho rized Aud i deale r as soon as
possible . _.,

Power top: ca nnot b e use d
Power top not operating
This message wi ll appear in the display if the power top has been
deactivated for safety reasons or if there is a malfunction. Possible
causes are:
• vehicle speed t oo high: the power top operation is deactivated
for safety reasons if the vehic le is mov ing at a speed above 3 mph
(5 km/hi.
• battery voltage too low: the power top wil l not operate if the
battery voltage is too low . This is a precautionary feature to make
s u re that the re is always enough battery power avai lable to start the
engine. The power top can be activated again once the engine has
been started and is running.
• ove rload cut -off: if the power top is operated repeatedly the
hydraulic actuator components will be severely stressed . In this
case the over load cut -off will safeguard the system against damage.
This safeguard deactiva tes the system fo r abou t 15 to 30 minutes.
After this time the power top can be operated again as usual=> & .
• Malfunction: One possible cause of a malfunction is the fai lure
of a system component. In this case the power top can a lso be
manual ly operated =>
page 68. Turning off the ignition during the
opening or closing process may cause a malfunction. You can
correct this yourself=>
page 65.
Pow er top no t sec ure
Power top not locked in place
If the top has not opened or closed completely and the vehicle
moves then at a speed above 3 mph (5 km/h), this
warning will
appear in the instrument cluster display. Stop the vehicle. Open or
close the power top completely. The warning should disappear .
& WARNING
Never drive the car with a power top that is not securely lock ed in
place . If it i s not fir mly engaged , the top can b e blown ope n by the
Contro ls and eq uip­
ment
P o w er top
& W ARN ING (conti nued )
airstre am and ca u se injur ies and damage to the vehicle . - Risk of
crash !•
Correcting a malfunction
Turning off the ignition durin g the opening or closing
process may cause a malfunction.
F ig. 57 Power top
cov er in end p osition
App ly the hand b rake.
Sw it c h t he igniti on off .
Fold the powe r top cove r upward un til it engages.
Stow the power top in the powe r top compa rtment.
T ur n on the igni tion.
Press or pull the swi tch f or p ow er top operatio n
~ page 62, fig . 52 un til the powe r top is f ully clos ed o r
open .a
~ehicle care Technical data

[ 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

Clear vision
Interior lights
Interior lights
The interi or lights include the both readi ng lights for the
driver and the front passenger.
Activ ating door conta ct switch
Fi g. 95 Co ntrol p an el
a b ove w indsh ie ld : inte­
ri or light s
-Press butto n@ . The ligh t in the button comes on.
Deactivating door contact switch
- Press button @. The light in the button goes out.
Front re ading light s '{~
Press right or left swi tch ® to turn the front reading light
on your side on o r off.
When you have the interior light switch moved to the door contact
position (center position), the interior light illuminate whenever you
unlock the vehic le or when you open a door. The interior light goes
out after approximate ly 30 seconds after you have c losed the door.
A lso, when you lock your veh ic le or switch on the ignition, the inte­
rior light goes out. If you leave a door open, the interior
light wi ll go out after ten
m inutes so that it does not dra in the battery .
A dimmer automatically controls the brightness of the lights when
they are switched on. •
Luggage compartm ent light
These lights inside the luggage compartment come on automati ­
ca lly when the rear lid is opened. The lights turn off automatically if
the lid is left open for more then 10 minutes. •
Vision
Sun visors
Using the sun visors makes driving safer.
AWAI'~
--- -0 ----- 1 ---·
---
-·------... -..... -
_____ ... _
---.... -~ .. -----------
Fig . 9 6 Sun v is o r
The sun visors for the driver and front passenger can be removed
from their center mountings and moved toward the door windows
G) ~ fig. 96 to protect against side glare.
The vanity mirror in the sun visors is covered by a lid . When you lift
the lid
0 the mirror i llumi nation automatically illumina tes . When
you close the lid or fold the sun visor back up, the illumination also
goes out .•