you can do one of two things reset the fob key by opening the car door with the key they press the fob close button approx 4 times this should reset the fob, do this every time you change the fob battery. if this does not sort it you can go to a quicko service centre with your passport and proof of ownership of the car they will charge £15 and have the over ride code for you the next day
JULIE MCKAY, December 2006