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Audi A4 Cabriolet 2009 - Page 51

Audi A4 Cabriolet 2009
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Master key battery replacement
Each master key contains a battery housed under the
cover.
Fig. 39 Master key:
opening the cover
We recommend hav ing the battery changed by an autho-
rized dealership. However, if you wish to replace the dead
battery yourself, proceed as follows:
- Pry apart the base => fig. 39
@ and the cover @ carefully
with a coin.
- Remove the cover (arrow).
- Remove the dead battery from the cover.
- Install the new battery. Please make certain that the"+"
sign on the battery faces down. Correct polarity is shown
on the cover.
- Place the cover with the new battery on the key base and
press both parts together.
W For the sake of the environment
Dispose of dead batteries properly so as not to pollute the environ -
ment.
Contro ls and equip-
ment
Opening and closing
[ i] Tips
The replacement battery must be the same specification as the
original.
Electronic immobilizer
The immobilizer helps to prevent unauthorized use of
your vehicle.
A computer chip inside your key automatically deactivates the elec-
tronic immobilizer when you insert the key in the ignition lo ck.
When you remove the key from the ignition lock, the electronic
immobilizer is automatically activated once again.
If an unauthorized key was used,
SAFE is displayed continuously in
the odometer display field.
in. WARNING
Always take the key with you when you leave the vehicle. The key
can disarm the electronic engine immobilizer and permit an unau-
thorized person to start the engine and enable operation of the
vehicle systems such as power window or power top leading to
serious personal injury.
[ i] Tips
Your engine can only be started using the factory -equipped key.
You may not be able to start your vehicle if an ignition key of a
different vehicle make is also located on your set of keys.
For Declaration of Compliance to United States FCC and Industry
Canada regulations
~
page 320.
~ehicle care irechnical data

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