change key battery AUDI S8 2009 Owners Manual

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 • •

• .___w_ a_ rm __ a_ n_ d_ c_o _l_d ________________________________________________ _
Warm and cold
Climate controls
Description
The air conditioner is fully automatic and is designed to
maintain a comfortable and uniform climate inside the
vehicle.
We recommend the follow ing settings:
- Set the temperature to 75 °F (+23 °C).
- Press the !AUTO
I button.
With this setting, you attain maximum comfort in the least amount
of time. Change this setting, as desired, to meet your personal needs.
The climate controls are a combination of heating, ventilation and cooling systems, which automatically reduce humidity and cool the
air inside your vehicle.
The air temperature, air flow and air distribution are automatically
regulated to achieve and maintain the desired passenger compart­
ment temperature as quickly as possible.
The system automatically compensates for changes in outside
temperature and for the intensity of the sunlight entering the
vehicle. We recommend you use the
Automatic mode=> page 117
for year-round comfort.
Please note the following:
Turn on the air conditioner to reduce humidity in the vehicle. This also prevents the windows from fogging up.
When the outside temperature is high and the air is very humid,
condensation from the evaporator may drip under the vehicle. This
is normal and does not indicate a leak. If the outside temperature is low,
the fan normally only switches to
a higher speed once the engine coolant has warmed up sufficiently.
The air conditioner temporarily switches off when you drive off from
a standstill using full throttle to save engine power.
The compressor also switches off if the coolant temperature is too
high, so that the engine can be adequately cooled under extreme
loads.
Air pollutants filter
The air pollutants filter (a combined particle filter and activated
charcoal filter) reduces or prevents outside air pollution (dust, or
pollen) from entering the vehicle.
The air pollutants filter must be changed at the intervals specified
in your Warranty
& Maintenance booklet, so that the air conditioner
can properly work.
If you drive your vehicle in an area with high air pollution, the filter
may need to be changed more frequently than specified in your
Audi Warranty
& Maintenance booklet. If in doubt, ask your autho­
rized Audi Service Advisor for advice.
Key coded settings
The air conditioner settings selected are automatically stored and
assigned to the key being used. When the vehicle is started, the air
conditioner automatically selects the settings assigned to that key.
This way every driver will maintain his/her own personal settings
and does not have to reset them manually.
If a different driver uses your key and changes the air conditioner
settings, the latest adjustments will erase and replace the settings
you have stored.
Energy management
To prevent the battery from being discharged and to restore the
balance of energy, components which require large amounts of

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_i c_ a _ l _in _ d_e _ x __ _
Fuel economy ...... .... .... .... .. 281
Leaks under your vehicle ... .. .... . 309
Lettin g the vehicle s tand and warm up .
28 2
Pr oper disposal of drained brake fluid
320
Proper disposal of dra ined e ngine
coolant ........................ 318
Proper disposal of drained engine oil ...
314,3 15
Recycling used engine oi l ........ .. 314
Un leaded fuel ... .. ... .. ...... .... 303
What should I do with an old battery? 324
EPC
See Electronic power control ........ 18
ESP
See Electronic stabilization program
(ESP) ... ..... ......... ....... ... 18
Event Data Recorder (EDR) ... .... ..... 270
Expans ion tank ...... ... .. ........ .. 317
F
Fan
Radia tor .. ...... ........ ..... .. . 319
Flat tire changing .................... 45
Floor mats ..... .... .... .... ... .... . 207
Fog lights Front .. ... .. .... .... .... ...... ... 71
Rear .... ... .. ....... .. ....... ... . 71
Warning/indicator lights ...... .... .. 19
Fo lding master key with remote control . 47
Foot pedals ... ... .. .... .... .... .... 206
Controls and equip­
ment Safety first
For the sake of the environment
Gaso line fumes and the environment 305
L etting your engine warm up .. .... . 130
Reducing engine noise by ear ly
upshifting . ...... .... .... ... .... . 12
Refueling . .... ... .... .... .... .... 305
Saving fuel by early upshifting .... .. 12
Using the rear window defogger .... 124
F ront a irbags
Description ... .... .... .... .... ... 224
How they work ................... 229
Front arm rest adjusting ..... ... .... .... .... .... . 93
Storage compartment ... ...... .... . 93
Front ashtray .... ..... .. ..... .... ... 106
Front fog lights ... .. .... .... .... .... . 71
Front seats ...... .... ........ ....... . 86
Adjusting .. ...... .... .... .... ... 203
Ch ild restra ints in the front seat ... . 222
Convenie nce side v iew .. ...... .... . 91
Poc kets ... .. .... .... .... .... .... 1 10
Symmetrica l seat positions . ...... .. 91
Fronta l collisions and the laws of physics
212
Fuel Additives ... .. ..... .. .... .... .... 303
Average c onsumption .... ...... ... . 38
Blended gasoline ... .. .... .... .... 303
F uel filler neck . ...... .... .... .... 304
Fuel gauge .. ....... .... .... .... .. 14
Gasoline ...... ... .... .... .... ... 303
Gaso line additives ................ 304
I nstantaneous fuel consumption ..... 38 Low
fuel level symbol .... ... .. ..... 35
Octane rating .... .... .... .... .... 303
Recommendation . .... .... .... .... 303
Refuelling . ... .... .... ...... ..... 305
Reserve .......................... 14
Tank capacity .. ...... .... .... . 14, 380
Un lock ing the fue l filler flap by hand 307
Fuse arrangement ... ....... ... .. .... 360
G
Garage door opener (Homelink®) ...... 194
Gas discharge lamps ...... .... .... ... 364
Gauges Engine coolant temperature . ...... .. 12
Fuel gauge ... .... .... ... .... .... . 14
Speedomete r ..... .... ... .... ..... 1 4
Tac hometer . ... ... .... ... .... .... . 13
Trip odometer ... .. .... .... ...... .. 14
General illustration Instruments and controls ......... .. 11
Generator Warning/indicator lights .... .... .... 18
G lossary of t ire and loading terminology . . .
327
G love compartment .. ....... .... .... 109
cd changer ... .... .... .... .... ... 109
Owner's Literature .... .... .... .... 109
Gross Vehic le Weight Ra ting (GVWR) ... 377
Vehicle operation Vehicle care Do-it-yourself service Technical data