2009 AUDI S6 change key battery

Check light in the master key
The check light in the master key provides information
about different conditions .
Check light functions in the master key :
Ve hic le within range of th e key
Fig . 2 8 Check ligh t in
th e m ast er k ey
If the vehicle is within range of the key, the check light comes on
briefly once when a button is pressed.
Ve hic le o utside th e ra nge of th e key
I f the vehic le is outside the range of the key, the check light comes
on briefly once and then shows the status of the vehicle door locks:
• If the light is flashing qu ickly, the vehicle is not locked.
• If the light is flashing slowly, the vehicle is locked.
S ta te o f m aster key batt ery
I f the check light does not come on, the battery is dead and has to
be rep laced. In addition , when the battery is dead the symbol
appears in the instrument cluster disp lay as well as the message :
Please re place ma ste r ke y battery
Battery replacement => page 43 .
Con tro ls and eq uip­
ment
Op ening and clo sing
[ i ] Tip s
Please note that the current state of the vehicle door locks can only
be recalled with the master key that was last used to lock the
vehicle. It is possib le tha t a different state is shown for the door
locks on the other master key which is not the same as that of the
vehicle .•
Master key battery replacement
Each master key contains a battery housed under the
cover.
Fi g. 29 M aster key:
o peni ng th e cover
We recommend having the battery changed by an autho­
rized dealership . However, if you wish to replace the dead
battery yourself, p roceed as follows:
- Pry apart the base => fig . 29
@ and the cover @ carefully
with a coin.
- Remove the cover (arrow).
- Remove the dead battery f ram the cover.
- Install the new battery. Please make certain that t he"+"
sign on the batte ry faces down. Correct po larity is shown
on the cove r.
ti>
Vehicle care I I irechnical data

Opening and closing
& WARNING
• When you lock your vehicle from outside, nobody -especially
children - should remain inside the vehicle. Remember, when you
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 front 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 re-open the door for a brief period directly after
closing it. This allows you to ensure that the doors are properly
locked .•
Anti -theft alarm system
Description
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 light on top of the 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 following parts of the vehicle:
• engine compartment
• luggage compartment
• doors
• vehicle incline
• 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 or if the vehicle incline has been changed. The anti ­
theft alarm system will also go off when the battery is disconnected.
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
~

• .___w_ a_ rm __ a_ n_ d_ c_o _l_d ________________________________________________ _
Warm and cold
Climate control
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 105
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 __ _
Environment
Break -in period ... ... . .. .. ..... ... 271
Catalytic converter .... ...... ...... 272
Dispos ing of your vehic le battery ... 315
Driving at high speeds .... .... ... . 273
Dr iving to minimi ze pollution and noise .
273
Fuel ............................ 297
Fuel economy .... .... .... ....... . 273
Leaks under your vehicle ... .. ... .. 301
Letting the vehicle stand and warm up .
274
Proper disposal of drained brake fluid 311
Proper disposal of drained engine coolant ........................ 309
Proper disposa l of drained engine oil 306
Recycling used engine oi l .. .. .. .... 306
Un leaded fuel .................... 295
What should I do with an old battery?
315
EPC
See E lectronic power control ........ 18
ESP
See E lectronic stabi lizat ion p rogram
(ESP) ... ..... ...... .... ..... .... 18
Event Data Recorder (EDR) . ...... .... . 262
Expansion tank ... ... .... ..... .. .... 308
Exterior lighting in the mirror housing ... 66
E yeglasses compartment .... .... .... . 100
Controls and equip­
ment Safety first
F
Fan
Radiator .... .... .... .... ...... .. 310
Fastening eyelets .................... 90
Flat tire
Changing .... .... .... .... .... ... 344
Floor mats ......................... 200
Fog lights ...... .... .... ...... ... .. .. 65
Fo lding master key with remote contro l . 41
Foot pedals ........................ 200
For the sake of the e nvi ro nmen t
Gaso line fu mes and the environment 297
Letting your eng ine warm up ...... . 1 17
Reducing engine noise by ear ly
upshif ting ....................... 12
Re fuel ing ..... ... .... .... .... .... 297
Savi ng fuel by early upshifti ng .. .... 12
Using the rear window de fogger ... . 108
Front airbags Description .... ..... .. .... .... ... 219
How they work .... .... .... ....... 224
Front arm rest adjusting . .... ..... .. .... .... .... . 88
Storage compartment .............. 88
Front ashtray .... .... .... .... .... ... . 96
Front fog lights . .... .... .... .... ..... 65
F ront seats .. ............ .... ....... . 80
Adjusting ....................... 197
Child restraints in the front seat .... 217
F ronta l coll isions and the laws of physics
206 Fuel
Additives .. .... .... ... .... .... ... 295
Blended gasoline ...... .... .... ... 295
Consumption ........... .... ...... 38
Fi ller neck .... .... .... ... .... .... 296
Fuel gauge . ...... .... ... .... .... . 14
Gas oline ...... .... ... .... .... ... 295
Gaso li n e additives ..... ... .... .... 296
Low fuel level ..... .... ... .... .. 14, 3 4
Octane rating .. ...... .... .... .... 295
Recommendation .. .... ... .... .... 295
Refuelling .... .... .... ... .... .... 297
Reserve ... .... ... .... ... ... ...... 14
Tank capacity ..... ... .... ...... .. 369
Un locking the fue l filler flap by hand 299
Fuse ar rangement . ....... ... .... .... 35 1
G
Ga rage door opener (Homelink®) ..... . 188
Gas discharge lamps ... ... .... ... ... . 355
Gauges Engine coolant temperature .... ..... 12
Fuel gauge ... ... ....... . .... ..... 14
Speedometer . .... .... ... .... ..... 14
Tachometer ....................... 13
Tr ip odometer .. ....... .... .... .... 14
General illustration Instruments and controls . .... .... .. 11
G lossary of tire a nd loading termi nology . . .
318
G love compartment ... .. .... .... ..... 99
cd change r ... .... .... .... .... .... 99
Valet key function .... .... .... ... .. 44
Vehicle operation Vehicle care Do-it-yourself service Technical data