This happened to me a couple of times. I’ve created this blog post so I don’t forget about the solution and in case it helps anyone else.
My VW Passat keyfob stopped working. There is nothing wrong with the battery. I was able to check this by using the battery with another keyfob.
This problem is that I’ve managed to “un-sync” the keyfob. The reason this probably happens is that I play with the keyfob all the time, pressing the buttons etc.
The solution is to reprogram / sync the key back to the car. Follow the steps below:
- Use the flip out key and manually open the driver’s side front door (remove the little key cover on the rear of the door handle).
- ‘Cycle’ (turn) the key clockwise and counter-clockwise. Doing this locked and unlocked the car and the sidelights flashed as they normally do as if I clicked the fob to lock the doors.
- Keeping the key in the door, now use the keyfob, to lock & unlock the car.
- The keyfob should now be working!
Worked for me :)