I replaced the battery in my key fob today (Vectra 2.2 2002), now the RCL won't work at all, I can only open the doors using the lock, then the alarm goes off and I need to put the key in the ignition.
Problem then is that the car won't start as I think the immobiliser is has kicked in.
Do I need to pair the key and car together again by putting in ignition or something???????