Chanked my battery in my remote key fob for my Vauhall Astra and found that if you take more than 3 minutes (which I did)you need to reprogram it. Can you do this through the ignition or is it a main dealer job?
Some astras you had to insert the key in the ignition and turn it to the aux position while holding one of the fob buttons, I think the later astras you just need to use the key in the drivers door lock.
Bob
February 2007
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.