Hiya Rich. I have just got the 1.8 Zetec Ghia. My fob works like this - and this is straight out of the manual Reprogramming the unlocking function you can change the unlocking function so that pressing the "unlock" button once deactivates the central locking or double locking and the anti left system and unlocks only the drivers door. Pressing "OPEN" button twice within three seconds also unlocks the passengers doors. In order to re-programme the function press and hold the OPEN and LOCK buttons at the same time for at least 4 seconds with the ignition switched off. the direction indicators will flash twice to indicate the unlocking function has been re-programmed.