2009 AUDI S8 key battery

Driver information display
Yellow symbols
A yellow symbol means WARNING.
Fig. 18 Display: low
fuel level warning
(priority 2)
Yellow symbols indicate a priority 2 malfunction -Warning!
When a y ellow warning symbol appears,
one warn ing ton e sounds.
A driver message appears as well to explain the malfunction in more
detail. The dr iver warning goes out after about
5 s e conds, bu t it can
be brought up again at any time by pressing the [
CHECK I button .
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
2 seconds .
Yellow symbols mean :
Worn brake pads
Electromechanical
parking brake
=> page 34
=> page 136
Check engine oil level => page 35
=> page 313
Engine oil sensor malfunction => page 35
Low fuel level => page 35
Windshield washer fluid => page 35
level low
Battery voltage
=> page 36
-
II Battery in remote control key => page 48
Convenience key * => page 133
Key not in vehicle
USA models: => page26
Defect ive brake light
Canada models: => page26
Defective brake light
Defective light bulb
=> page26
Engine speed limitation* => page 35
-
IIAdaptive Light* defective => page 36
Dynamic headlight range => page 36
control defective
Defect ive light -/rain sensor
=> page 36
Tire pressure monitoring sys-=> page 43
tern*
Loss of air pressure
-Tire pressure monitoring sys -=> page 46
tern*
ll system not ava ilable
•
Worn brake pads r
Brake pads!

Driver information display
Battery voltage ~
If the battery's state of charge is not in the optimal range, the
symbol is shown in the display and the driver message
Low battery
charge: battery will be charged while driving
appears.
While this driver notification is displayed, you have to be prepared
for limited starting capability.
Driver message appears and goes out again
If this driver message appears after the ignition is turned on or
while driving and it goes out again after a while, the battery has
been adequately recharged.
Driver message appears and does not go out again
If this driver notification appears after the ignition is turned on or
while driving and does not go out again, the battery's state of
charge is not in the optimal range. Starting capability is restricted.
Have the battery checked at a dealership as soon as possible.•
Applies to vehicles: w ith Conven ience key
Key not in vehicle
Key not in vehicle
This message appears together with the symbol when the
remote control key is removed from the vehicle while the engine is
running. This is to remind you that you should not continue your trip
without your key.
If the remote control key is no longer in the vehicle, you will not be
able to start the engine again after you have switched off the igni ­
tion. In addition to this, you will not be able to lock the vehicle from
the outside. •
Applies to vehicles: with Adap tive ligh t
Adaptive Light defective== ~
.. c; Adaptive light defective
When this symbol L illuminates, it means that Adaptive Light is
defective. Go to an authorized dealership to have the headlights or
the control unit for the Adaptive Light repaired. •
Headlight range control defective '.:1
T<. Headlight range control defective !
If the symbol illuminates, the dynamic headlight range control is no
longe r working properly. Have the system checked and repaired at
your Audi dealer. •
Defective light /rain sensor jf:>
.... Automatic headlights/automatic wipers defective
If the symbol illuminates, the light/rain 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. If the rain sensor fails, the functions of the
windshield wiper lever will still work. Contact your authorized Audi
dealer as soon as possible to have the problem corrected. •

Opening and closing
Master key with remote control
The remote control allo ws you to l ock or unlo ck the
vehicle electronically .
Fig . 3 1 F old -up ma ste r
ke y wit h re mote
c ontro l
-To fold the key out and back i n place, press the release
button
=:> fig. 3 1.
The transmitter and battery are located in the head of the remote
control. The receiver is located inside the vehicle . The maximum
ef fective ra nge depends on several t hings. Remember, if the battery
is weak, the effective range decreases .
If you need to replace the remote contro l, or if you need to have it
repaired, you must see your authorized Audi dealer. On ly then can
you use the key again .
Personalizing the master key
When the ignition is turned off or when the vehicle is locked, various
convenience settings are stored automatically and assigned to the
key that wa s used . The settings assigned to the key are automati ­
cally reca lled with you unloc k the vehicle or when you open a door
or when you switch on the ignition .
• Climate contro l
• Central locking
• Windows and rear window sun blind •
Background lighting *
• Seat me mory
• Adaptive Cruise Contro l*
• Audi lane and side assist *
• Advanced Parking Syste m*
T he
Remo te co ntrol ke y function must be activated in MMI
=> page 95, so that the settings for the driver's seat (including the
sett ings for the head restraint, steering column , safety be lt height
and exterior mirrors) are saved on the master key through the seat
memory when the vehicle is locked, and a re set automatically when
the vehic le is unlocked .
[ i ] Tip s
• I f the ignition is switched on, the remote control system is deac ­
tivated .
• T he remote control system can be affected by other systems
opera ting in the same frequency range close to the vehicle, such as
mobile telephones, television broadcasting stations, etc.
• For Declaration of Compliance to United States FCC and Indus try
Canada regulations =>
page 385. •
Battery replacement , master key
. w ',!
Fig . 32 C heck lig ht in
the m aster key ..

Battery operation in the master key is monitored by a check light .
The check light flashes when one of the buttons on the master key
is pressed . If the check light does not flash, the battery is dead and
has to be replaced .
In addition, when the battery is dead the symbol appears in the
instrument cluster display as well as the message :
Please ch ange key battery
We recommend having the battery changed by an Audi Dealer .•
Electronic immobilizer
T he immob ili z er helps to prevent unauthorized use of
y o ur vehicle.
A computer chip inside your key automatically deactivates the e lec­
tr onic im mob ilizer when you insert the key in the ign iti on lock, or on
vehic les with Convenience key*, when the key is inside the vehicle .
When you remove the key from the ignition lock, or on vehicles with
Convenience key, when you remove the key from the vehicle, the
e lectronic immobilizer is automatica lly activated once again.
If an unauthor ized key was used,
SAFE is disp layed continuously in
the odometer disp lay field.
& WARNING
Always take the key w ith you when you leave the vehicle. The key
c an disarm the electronic engine immob ilizer and permit an unau ­
thori zed person to start the engine and enable oper atio n of the
vehicle sy stem s such a s power window or power sunroof leading
to s eriou s personal injury .
[ i ] Tip s
• Your engine can on ly be started using the factory-equipped key.
Controls and equip ­
ment
Opening and clo sing
• You may not be ab le to start your vehic le if an ignition key of a
different ve hicle make is a lso l oca ted on your set of keys .
• F or Dec laration of Comp liance to United States FCC and Industry
Canada regulations =>
page 385 . •
Power locking system
General description
T he power locking system locks or unlocks all doors and
the rear lid simultaneousl y.
The power loc kin g system in your veh ic le incorporates the following
functions:
• Central locking function
• Selective unlock feature=>
page 52
• Remo te contro l fea ture => page 48
• Convenience key*=> page 58
• Ant i-theft a larm system => page 60
All the doors and the rear lid are locked by the central locking
system when you lock the v ehicle. You can set whether general ly
only the driver's door or all doors and the rear lid should be
unlocked when you open t he vehic le in the MM I menu
Central
loc king
to suit your individua l desires=> page 52.
Unlocking the vehicle
You can un lock the vehic le from outside either by using the remote
co ntrol
or by tur ning the key i nside the driver's door lock. When you
unlo ck your vehic le:
• The anti -theft ala rm system is deactivated briefly .
• The vehicle interior lights i lluminate for approximately 30
sec ond s.
• All turn signal lights wi ll flash twice when the car is unlocked. .,,_
I • •

vehicle, the system senses that your are approaching, it makes a
quick check to see if you are "authori zed" and then i t does the
following :
• unlocks the vehicle ~
page 59 .
• locks the vehicle~ page 60.
• switches on the ignition and starts the engine when y ou press
the [ START] button . You do not have to insert your key into the igni ­
t ion lock ~
page 131.
& WARNING
• When you lock your vehi cle from out side , nobody -especially
c hildr en -sh ould rem ain in side the vehi cle . Rem emb er, w hen you
lock the vehicle fr om the outside the window s cannot be opened
from the in side .
• When you leave the vehicle , alwa ys remove the ignition key and
t a ke it wi th yo u. Thi s w ill prevent pa ss engers (children , for
example ) fro m acciden tally bein g locked in the vehicle should they
ac cid entally pr ess the p ower lock ing switch in the doo rs.
• Do not leave children in side the vehicl e un sup ervised. In an
eme rg ency it would be i mpo ssible to ope n th e door s from th e
o ut side wi thout the ke y.
[ i ) Tips
• For the Convenience key to properly work, you must always have
your vehic le key with you .
• The vehicle will lock or unlock the doors only if an authorized key
comes within 5 ft 11.5 meters) from one of the vehicle doors or the
rear lid.
• You can still lock or unlock your vehic le using the remote control
key buttons, however the se lector lever must in the P position .
• For Declaration of Compliance to United States FCC and Industry
Canada regulations ~
page 385. •
Controls and equip ­
ment
Opening and clo sing
Ap plies to veh ic les : wi th C onve nie nce ke y
Unlocking the vehicle
Y ou can unlock the doors and rear lid without using the
remote control .
Fig . 4 6 Convenien ce
k ey: U nlo ck in g a door
- Grab the door hand le . The door automat ica lly un locks.
P ull the doo r handle to o pen the doo r.
A door will unlock as you approach a door handle and the system
senses that you have an authorized key . This applies to each door on
t he vehicle . The authorized key on ly has to be within a range of
about 5 feet 11 .5 meters) from the respective door .
Whenever you un lock a door, the driver's door a lso un locks . Yo u can
set the power lock system using the me nu in the
MMI system, for
examp le, if you want to unlock just one specific door , or all the
veh ic le doors
~ page 52 .
[ i ) Tips
If you r vehic le has been standing f or an extended pe riod, p lease
note the following:
• To conserve battery power, the sensor will turn off after a few
days. When you come back, you will have to pull on the door hand le
once to un lock the door and then a second time to open the door .
~
I • •

Opening and closing
• Again, to conserve battery power so that you can start the
vehicle after it has been standing for a long period, the vehicle's
energy management system will switch off any convenience
features not necessary. You will not be able to unlock your vehicle
using the keyless system. •
Applies to vehicles: wi th Conven ience key
Locking the vehicle
You can lock the doors and rear lid without using the
remote control.
Move the selector lever into P.
Fig. 47 Convenience
key: locking the
vehicle
- Press the lock button in the door handle to lock the
vehicle ~& .
You can lock each door on the vehicle. Remember, an authorized key
must be within 5 ft (1.5 meters) of the door.
The selector lever must be in the P position, otherwise the vehicle
will not lock.
& WARNING
• When you lock your vehicle from outside, nobody -especially
children -should remain inside the vehicle. Remember, when you
& WARNING (continued)
lock the vehicle from the outside the windows cannot be opened
from the inside.
• When you leave the vehicle, always remove the ignition key and
take it with you. This will prevent passengers (children, for example) from accidentally being locked in the vehicle should they
accidentally press the power locking switch in the doors.
• Do not leave children inside the vehicle unsupervised. In an
emergency it would be impossible to open the doors from the
outside without the key.
[ i] Tips
It is not possible to open the door immediately after it has been
locked. This is intentional to allow you to check proper locking of all
vehicle doors .•
Anti-theft alarm system
The anti-theft alarm triggers an alarm if anyone attempts
to break into the vehicle.
The anti-theft alarm system triggers an audible alarm and turns on
the emergency flasher if an unauthorized interference with the
vehicle is sensed by the system .
How is the anti-theft alarm system switched on?
The anti-theft alarm system is switched on when you lock the
vehicle. The system is activated approximately 30 seconds after the
vehicle is locked . The indicator lights on top of the driver's and front
passenger's door trim start flashing rapidly for 30 seconds and then
blink slowly. ._

How is the anti-theft alarm system switched off?
The anti-theft alarm system is switched off only when you unlock
your vehicle. If you do not open a door within 60 seconds after you have unlocked with the remote control, the vehicle will lock itself
again automatically.
When will the anti-theft alarm system be triggered?
When the vehicle is locked, the alarm system monitors and protects
the follow ing parts of the vehicle:
• engine compartment
• luggage compartment
• doors
• ignition
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. The anti-theft alarm system will also go off when
the battery is disconnected.
Unlocking the rear lid by inser ting and turning the key inside the
rear lid locking cylinder will trigger the optical and acoustic alarm .
You can also trigger the alarm by pressing the PANIC button on your
remote control. This will a lert other people in case of emergency .
Press the
PANIC button again to turn off the alarm.
How is the anti -theft alarm switched off when
triggered?
The alarm system is switched off when you unlock the vehicle or
when the ignition is switched on. The alarm will a lso switch itself off
when it comes to the end of its cycle .
Emergency flasher and horn
The emergency flasher will blink briefly and the horn sounds when
the doors, engine hood and rear lid are properly closed.
If the emergency flashers do not b link , or the horn does not sound,
check the doors, engine hood and rear lid to make sure they are
properly closed . If you close a door, the hood or the rear lid with the
Con tro ls and eq uip­
ment
Opening and closing
anti-theft alarm switched on, the emergency flashers will blink and
the horn will sound only a fter you have closed the door or lid .
[ i ] Tips
For the anti-theft alarm system to function properly, make sure all
vehicle doors and windows are closed before leaving the vehicle .•
Power windows
Controls
Vehicle care I I
Fig. 48 Driver's door:
power window
switches
Fig . 49 Driver's door:
Switches (vehicles
with power child safety
lock ) _,.
irechnical data

- Press the (D button to turn on the interior lights. If you
press the button a second time, the interior lights in the
rear are also turned on.
Reading lights ~
- Press the switch to turn the right or left reading light on
or off=>
page 74, fig. 64.
With the door contact circuit, 00 the interior lights turn on as soon
as you unlock the vehicle or open the doors. The interior lights are
also turned on when the ignition key is removed. The light goes out
about 2 minutes after the doors are closed. When the vehicle is
locked or when the ignition is turned on , the interior lights are
turned off.
When a door is open, the interior lights are turned off after about 10
minutes to prevent draining the battery .
[ i) Tips
The interior lights can be dimmed by holding the (D switch pressed
down. If the interior lights in the rear were turned on by pressing the
switch twice, the rear interior lights are also dimmed .•
Con tro ls and eq uip­
ment
Clear vision
Rear Interior Lights
The rear interior lights also contain reading lights for
rear-seat passengers.
Fig . 65 Rooflining:
Rear interior lights
4
Fig. 66 Rooflining:
Rear reading lights
Interior lights
- Press the@) button to turn off the interior lights
=> fig. 65.
- Press the
(ID button to turn on the door contact circuit.
- Press the
(D button to turn on the interior lights.
Vehicle care I I irechnical data