Question about 2003 Audi A4 Cabriolet

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Remote not working after disconnecting battery

Power top stopped working, so I tried disconnecting the battery for about 45 minutes to see if a reset would fix the problem; after reconnecting the battery the remote control on the master key will not work (lock/unlock and panic button).

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If car Convenience Control Module(module that control key remote) lose power- remote adaptation to the car will be lost. This apply to some Audi models.
What you can try to do is:
1. Disarm alarm manually by opening door lock with the key
2. Put key into ignition and turn to on position (don't start the car)
3. Press few times remote button (with the ignition in on position)
Depends on your year model it my work (works on the newer models), if not you have to go to the dealership to program your keys.
Good luck!

Posted on May 22, 2009

  • JMac69 Aug 18, 2011

    Not sure why, but I tried the above suggestion and had no luck. Just out of being stubborn, ,I tried again by turning the key to position 1 and locking the door (sitting in the car) then pressing the unlock button 3 times on the remote (while in the ignition) removed the key and pressed the unlock button and it actually unlocked the door. I then pressed the lock button to confirm the remote would lock the car. Unlocked and relocked a few times to confirm before declaring victory...



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