Sorry to hijack the thread, I've got a 2002 Focus, which i bought and drove home, then swapped the buttons on the key fob as they were knackered and now i can't get the car to start. The fob will still open the doors/central locking but won't turn the car over.

The little light on the dash is flashing which i think indicates that the imobiliser is armed and i can't get it to disarm. I've got an electronic key and a standard key with a blue dot on it.

Does anyone have any ideas of what i need to do?

Cheers

Mike