2004 Audi A3 TDi - Remote key stopped working over night

[Lazadude]

Hey all,

"Primary" Key was working fine, long range and always worked first press. Locked the car when I got home from work, then the next morning the remote functions (lock, unlock, boot release etc) have stopped working.

Key unlocks the door, and if put in the ignition will start the car.

The "spare" key works like normal, suggesting its a problem with the "main" key.

I've replaced the batteries in both keys (could only buy the batteries in a pack of 6...), no change.

Is it possible for the key or the car to forget its sync code? if so what's the key syncing procedure?

Thanks in advance.

[Dr G]

You can try:

Key in ignition, ignition on (do not start), then press lock/unlock/lock/unlock/lock/unlock/lock/unlock a few times. Turn ignition off, take key out, close door and try to lock on remote.

If that doesn't do it then you could either be looking at a re-code or replacement key.

[Lazadude]

Didn't work, Guess I'll have to take it into a stealership.

Thanks for the suggestion.