change key battery AUDI S8 2008 Owners Manual

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

___ w_ a
_ r_m _ a_ n_d_ c_ o_ ld __________________________________________________ _
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 following 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 __ lllll
Proper disposal of drained engine oil ...
312,3 13
Recycling used engine oi l ...... .... 312
Un leaded fuel ..... .... ... .... .... 301
What should I do with an old battery?
322
EPC
See Electronic power control ........
18
ESP
See E lectronic stabi lization program
( E SP) ...........................
18
Event Data Recorder (EDR) ... .... .... . 268
Expans io n t ank ...... .... ... .... .... 315
F
Fan
Rad ia tor .. ...... .... .... ... .... .
317
Flat tire changing .. ... .... .... ... .. .. 45
Floor mats ... .. .... .... .... ... .... . 205
Fog lights
Front . ...... .... .... .... ..... .. ..
71
Rear .... ... .. .... .... ... .... .... . 71
Warning/indicator lights ...... .... .. 19
Fo lding master key with remote control .
47
Foot pedals ........................ 204
For the sake of the environment
Gaso line fumes and the enviro nment
303
Letting yo ur engine warm up . ...... 130
Reduc ing eng ine noise by ea rly
upshifting .. .... .... ............
12
Refuel ing .... .... ....... .... .... 303
Saving fuel by early upshifting .. .... 12
Using the rear w indow defogger .... 124
Controls and equip­ ment Safety first
Front airbags
Description ......... ...... .... ...
222
How they work .... .... .... ....... 227
F ront arm rest
adjusting .........................
93
Storage compartm ,ent .............. 93
Fr ont ash tray .. ...... .... .... .... ... 106
Front fog lights ..... .... .... .... .... . 71
Front seats ...... ...... ... .. .... .... . 86
Adjusting ....................... 201
Child restraints in the front seat . ... 220
Convenience side view ............. 91
Pockets ............. .... .... .... 11 0
Symmetrica l seat positions ......... 91
Fronta l collisions and the laws of phys ics
210
F uel
Additives ..... .... .... .... .......
301
Average consumption ...... .... .... 38
Blended gasoline .... ....... .... .. 301
Fuel filler neck ............. .... .. 302
Fuel gauge .. ....... .... .... .... .. 14
Gaso line .. .... ..... ...... .... ... 301
Gaso line additives .. ....... ....... 302
Instantaneous fuel consumption .. ... 38
Low fue l level sym bol ... .. .... .... . 35
Octane rating ... .. .... .... .... ... 301
Rec ommendat ion ... .... ... .. .... 301
Refuel ling .. ...... .... .... .... ... 303
Reserve ... ....... .... .... ....... . 14
Tank capacity ................. 14,378
Unlocking the fuel filler flap by hand 305
Fuse arrangement . ...... .... ..... .. . 358
G
Garage door opener (HomeLink®) ...... 191
Gas discharge lamps ...... .... .... ... 362
Gauges
Engine coolant temperature . ...... ..
12
Fuel gauge . ...... .... ... .... .... . 14
Speedomete r ..... .... ... .... ..... 14
Tac ho m eter . ... ... .... ... .... .... . 13
Trip odometer ... .. .... .... ...... .. 14
Gene ral il lustration
Instruments a nd controls ... .. .... ..
11
Generator
Warning/indicator lights ...... .... ..
18
G lossa ry of tire and loading te rmin ology . . .
325
Glove compartment ................. 109
cd changer ........... .... .... ...
109
Owner's Literature ................ 109
Gross Vehic le We ight Rating (GVWR) ...
375
H
Head restraints ....... ... .... .... ... 203
Adjusting ...... .... ... .... .... ... 203
Comfort head restraints ............ 91
Front seats ... .... .... .... .... .... 91
Rear seats .... .... .... ...... ... .. .
92
Headlight ra nge co ntrol ...... .... ... .. 36
Headlights .. .. .. .... .... ...... .... .. 69
Adaptive Light .................... 72
Defective .. ........... .... .... .... 26
Front fog l ig hts .................... 71
Vehicle operation Vehicle care Do-it-yourself service Technical data