guys, did you get this resolves? I have a 'similar' problem. My problem is that the passenger door would not lock so causing the central locking to open again as soon as I try to lock the doors.
Stragely, my GT has a a lock on the passenger door. Has someone done a dumb thing replacing the handle with one with a key?
The key is not able to lock the door from the passenger side. Something is stopping it from locking either with a key or remote.
I can lock the driver door with the key.
Could this be a fuse or a solenoid, or the body computer?
Sometimes when stationary the computer continously attempts to lock the door but it fails so it keeps trying.
Even when driving along this often happens.
I just bought the car and the lock was fine when I bought it. It started to play up after I washed the car thouroughly. I didn't drown it though. The washing may not have anything to do with it.
My mechanic quickly suspected the body computer but he said he would need to investigate. This made me nervous. It is like giving a blank cheque so I said I would watch it for a while.
I've tried removing the battery but it did not resolve it.