My key works fine, my missus key however no longer blips the central locking (I have tried changing the battery etc), she can get into the car but only via putting the key in the drivers door, if she opens another door after this without starting the car the alarm goes off! I've tried a couple of the reprogramming steps I've found on line and can never get it to work, does she need a new fob or am I just an idiot who cannot follow simple steps? Help please it's doing my nut in.