2008 AUDI S8 key battery

Driver inf orma tio n displ ay
Yellow symbols
A yellow symbol means WARNING.
Fig . 18 Display: low
fu el l eve l warn in g
(pr iori ty 2)
Yellow symbols indicate a priority 2 malfunction - Warning!
When a yellow warning symbol appears,
one warning tone sounds.
A driver message appears as well to explain the malfunction in more detail . The driver warning goes out after about 5 seconds, but 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
Check engine oi l level
=> page 311
= page 34
=> page 136
=> page 35
Engine oil sensor malfunction => page 35
Low fue l level => page 35
-
Windshield washer fluid = page35
level low ~
Battery voltage => page35
-
II Battery in remote control key = page48
Advanced Key* = page 133
Key not in vehicle
USA mod els: = page26
Defective brake light
Canad a m od els: => page26
Defective brake light
Defective light bulb
=> page26
Adaptive Light* defective => page36
-
Dynamic headlight range => page36
ll contro l defective
Defective light -/rain sensor
= page36
--Tire pressure monitoring sys-= page42
tern
II Loss of air pressure
Tire pressure monitoring sys -
= poge45
tern
System not available
•
Worn brake pads
l"J Br ake pad s !

If the symbol illuminates, contact your authorized Audi dea ler to
have the front brake pads inspected (on that occas ion have the rear
brakes inspected as wel l to be
safe!. •
Checking the engine oil level ~
~-Please c hec k oil le vel
When the symbo l illuminates, check the engine oi l leve l as soon as
possible=> page 311 . Add oil if necessary=> page 312 . •
Engine oil sensor defective ~ ....
~ ... Oil le vel ! sen sor defe cti ve
If the symbo l illuminates, contact your authorized Audi dea ler and
have the oi l sensor inspected . Unt il you have this done, check the o il
level each time you refuel just to be on the safe
side => page 311. •
Fuel supply too low Bil
Bu Please refuel
When the symbol i lluminates, th is means there are abou t 2.4
gallons (9 l itres) of fue l left in the fue l tank . Time to refuel.
=> page 302 .
If the symbo l lights up, even when there is ample fuel in the tank,
and the text
Tan k sys tem m alfunct ion ! Conta ct w ork shop appears
in the disp lay, there is a fault in the system. Contact a qual ified work ­
shop to have the fau lt rectified .•
Windshield washer fluid level too low ~
~ Ple ase top up washer fluid
Controls and equip­ ment
Driver information di splay
If the symbo l illuminates, add windshie ld washer fluid to the washer
system and a lso to the headlig ht washer
sys tem => page 323. •
Battery voltage 0
If the battery 's state o f charge is not in the optimal range, the 0
symbo l is shown in the display and the driver message L ow batter y
charge: b attery will be charged while driving
appears .
Whi le this driver not ification is displayed, you have to be prepared
for limited starting capability .
Drive r m essa ge a ppear s a nd go es out ag ain
If th is d rive r message appears after the ign ition is turned on or
wh ile dr iving and it goes out again after a wh ile, the battery has
been adequately recharged.
Dri ver messa ge ap pears a nd does not g o out ag ain
If t his drive r notif ication appea rs after the ignition is t urned o n or
wh ile driving and does not go out again, the battery's state of
charge is not in the opti mal range. Start ing capab ility is restricted.
Have the battery c hecked at a dea lership as soon as possible. •
Applies to vehi cles : with Advanced Key
Key not in vehicle ..?c
.,J. Key not in vehi cle
This message appears toget her with the ..J. symbol when the
remote control key is removed from the vehicle whi le the engine is
run ning. This is to remind you that you s hould not continue your trip
without your key.
I f the remote control key is no longer i n the vehicle, you w ill not be
able to start the engine aga in after you have switched off the igni ­
tion. In addition to this, you will not be able to lock the vehic le from
the outside. •

Opening and clo sing
Master key vvith remote control
The remote control allows y ou to l ock or unlock the
vehicle electronically.
F ig . 31 Fo ld -u p m aster
key wit h re mote
c ontr ol
-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 r eceiver is locat ed ins ide th e vehicle . Th e maximum
ef fective range depends on several th ings. 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 .
P erson aliz ing the ma ste r ke y
When the ignition is turned off or when the vehicle is locked, various convenience set tings are stored automatical ly and assigned to the
key that was used . The settings assigned to the key are automati ­
cally recalled with you unloc k the vehicle or when you open a door
or when you switch on the igni tion .
• Climate contro l
• Ce ntral locking
• Windows and rear window sun blind •
Background lighting *
• Seat memory
• Adaptive Cruise Contro l*
• Audi lane and side assist *
• Advanced Parking Syste m*
The
Remo te co ntrol ke y function must be activated in MMI
~ page 95, so that the settings fo r the driver's seat (including the
settings 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 are set automatically when
the vehic le is unlock ed.
[ i ] Tip s
• If the ignition is switched on, the remote control system is deac ­
tivated .
• The remote control system can be affected by other systems
opera ting in the same frequency range close to the vehicle, such as
mobile tel ephones, television broadcasting stations, etc. •
Battery replacement, master key
g N
-. w 1l.
Fig . 3 2 Che ck light in
th e m as ter key
Battery operation in the master key is monitored by a check light .
The check light flashes when one o f 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
!i, symbol appears in the
instrument cluster display as well as the message:
!i, Pl ease chang e key batte ry
We recommend having the battery changed by an Audi Dealer .•
Electronic immobilizer
The immobilizer helps to prevent unauth orized use of
y o ur vehicle.
A computer chip inside your key automatica lly deactivates the e lec ­
t ronic immobilizer when you insert the key in the ignition lock, or on
vehic les with Advanced Key*, when the key is inside the vehicle .
When you remove the key from the ignition lock, or on vehicles with
Advanced Key, when you remove the key from the vehicle, the elec­
t ronic immobilizer is automatically activated once again.
If an unauthorized key was used,
S AFE is disp layed continuous ly in
the odometer disp lay field.
& WARNING
Alw ays tak e the k ey with you wh en you le ave th e vehicl e. The k ey
ca n di sarm th e ele ctr onic engin e immobili zer and permit an un au­
thorized p ers on to start th e eng in e and enable opera tion of the
v ehicle system s such as power window or power sunroof l eading
to ser iou s per son al in jur y.
[ i ] Tip s
• Your engine can on ly be started using the factory -equipped key.
• You may not be able to start your vehic le if an ignition key of a
different vehicle make is also located on your set of keys .•
Controls and equip­
ment
Openin g and clo sing
Certification
The remote control device comp lies with
• USA models: Part 15 of the FCC Rules .
• Can ad a m odels: RSS -210 of Industry Canada .
Operation is subject to the f ollowing conditi ons :
• this device may not cause harmful interference, and
• t his device must accept any interfere nce rece ived, i ncluding
interference that may cause undes ired operation.
0 Note
The manufacturer is not responsib le for ANY RA DIO OR TV interfer­
ence caused by unauthorized modifications to this equipment .
Changes or modifications to this unit not express ly approved by the
party responsible for compliance could void the user's authority to
operate the equipment. •
Power locking system
General description
The power locking system locks or unlocks all doors and
the rear lid simultaneously.
The power locki ng system in your veh ic le incorporates the following
functions:
• Central lock ing function
• Selective unlock
feature=> page 52
• Remote contro l feature=> page 48
• Advanced Key *=> page 59
• Anti -theft alarm system=> page 67

Opening and clo sing
Ap plies to vehicles : wi th Adv anced Key
Unlocking the vehicle
You can unlock the doors and rear lid without using the
remote control.
F ig . 46 Ad van ced Ke y:
Un locki ng a door
Grab the door hand le. The door automatica lly unlocks.
Pu ll the doo r handle to open the door.
A door will un lock as you approach a door hand le and the system
senses that you have an authorized key . This applies to each door on
the vehicle . The authorized key only has to be within a range of
about 5 feet (1 .5 meters) from the respective door .
Whenever you un lock a door, the driv er's door also unlocks . You can
set the power lock syste m using the menu in the MMI system, for
example , if you want to unlock just one specific door , or all the
vehic le doors
=> page 52 .
[ i J Tips
If your vehicle has been standing for an extended period, please
note the following:
• To conserve battery power, the sensor wil l turn off after a few
days. When you come back , you will have to pull on the doo r handle
once to unlock the door and then a second time to open the door . •
Again , to conserve battery power so that you can start the
vehic le after it has been standing for a long period, the vehicle's
energy management system will switch off any convenience
features not necessary . You wi ll not be able to unlock your vehicle
using the keyless system .•
A pplies to vehicles : with Adva nc ed Ke y
Locking the vehicle
You can lock the doors and rear lid without using the
remo te control.
F ig . 4 7 Advan ced Key:
L oc king th e vehic le
- Move the selector lever into P.
- Press the lock button in the door hand le to lock the
vehicle ~& -
You can lock each door on the vehicle . Remember, an authorized key
must be within 5 f t (1 .5 meters) of the doo r.
The selector lever must be in the P position , otherwise the vehicle
wi ll not lock.
& WARNING
• When you lo ck your veh icle from out side , nobody -espec ially
c hildren -should rem ain insid e the vehicle . R emember , 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.
Controls and equip­ ment
Opening and closing
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 following 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 inserting 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 alert 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 also 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 blink, 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
.,,.

Settings
The driver can determine in the MM/ which windows can
be opened using the convenience functio n.
Fig. 5 2 MMI dis pla y:
W indows menu
- Press the (CAR ) funct ion b utton.
- Sele ct
System s in the CAR menu .
- Selec t
Window s. The Window s menu appears =} fig . 52 .
- Select
Convenience open and activate ( on) for the doors
whose windows are to be opened using the Convenience open function .
The windows can be opened centra lly . To enab le convenience
opening of the front and rear w indows, the
Front door s and Rear
door s
functions must be switched On.•
Reactivating the system after battery
disconnection
If t he ve hicle batter y is disco nnected a nd then reconnected,
the au tomat ic c losing and opening functio n will no t work
unt il it is rea ctivated. To reactivate t his fea ture, perform th e
f o llow ing steps:
Contro ls a nd eq uip­
ment
Op ening and clo sing
Re activating clos e/open f eature
- Pull and hold the power w indow switch unt il the window
is comple tely c losed.
- Re lease the sw itch .
- Pull the switch aga in for one second. T he automat ic
clos ing/opening is now reactivated. •
Sliding/tilting power sunroof
Hovv the povver sunroof vvorks
111111111
0
111111111
0 Fig . 53 Sec tio n of th e
he adline r: sun roof
swi tch po siti ons
The roof wil l slide open or til t up at the rear as required . When the
ignition is on, you can slide the roof open or close it to the desired
position by turning the ro tary control switch located overhead next
to the interior light . The roof is tilted open or closed by pressing or
pull ing the control switch at
posit ion © ~ fig. 53 .
You can still close or open the sunroof for up to ten minutes after
you have sw itched off the ignition with the key remaining in the igni­
tion lock . If either door is opened , powered operation of the sunroof
wi ll be deactivated . _.,
Vehicle care I I irechnical data

-Press the CD 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 .•
Contro ls a nd 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
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 CD button to turn on the interior lights.
Vehicle care I I irechnical data