Can anyone shed any light on this for me?. To ensure the car is locked I have to have the ignition on and press the central locking button on the inside of my car , once this is done their is no problem locking/unlocking car...until I drive off again later and get above 10mph (when the doors lock automatically) it then reverts back to the above not being able to be locked either by keyfob or door key. Car has been to dealer for key recoding twice but still no joy........any help appreciated.