Hi I have a 2000 "X" Focus and the central locking has just begun to play up. The key wont operate the central locking remotely - I have tried new battery then programming it to car again. When I try to lock manually it locks then immediately unlocks. I have checked Fuse 63 and replaced - though it looked ok. Ive undone the green and blue cable from the Siemens locking module for an hour then put back in. I have just borrowed a scanner and it has come up with "B1600 Passive anti theft system ignition key Transponder Signal is not received".
Any help would be very much appreciated as I cant leave it anywere now.