Problem: First time I repair an MQB remote. Remote key start engine but no light or frequency go out.
After repair pcb, light go up and frequency detected. Even after start the car, remote still not operate with car.
Customer has 2 keys and one remote not working.
Successful Experience for sharing:
Few months ago I had customer with key start and emit frequency but the remote doesn’t work
I reprogrammed the key and the remote work again
Note that after programming is possible both remotes stop work if this happens reprogram again but program first this that was second.
Update MQB remote Sync:
1/ Lock the car
2/ Press Unlock 2s the key need to sync
3/ Insert the key in the driver door lock, turn to Unlock (Left) then Lock (Right) then Unlock again.
4/ Press Unlock button on the remote key (key still in the door lock)
***Car signal light flash to confirm***
I just did and work perfect. No need reprogram the key.