The central locking seems to take on a life of its' own, locking itself and unlocking itself. It doesn't happen that often, but overnight I've had it happen a few times enough to drain the battery to require a jump start.
1. How expensive would it be for the locking system to be replaced?
2. Can I disable to central locking completely (to leave to car in an unlocked state)?
I had this problem with my ef Futura..I replaced the central locking mechanism in the left bottom corner of the drivers door..you have to remove the door trim and you will see it is pop rivetted so you have to drill or knockout the rivetts and replace..wasnt that hard a job...I got my mechanism from a ed fairmont (doesnt have to be ef/el...now works fine..Cheers Baz
i believe you have to match the door lock actuator code with all the others in the system. each lock has a code on it and if you dont match them it sets the smart lock off and the locks go crazy. just giving you the heads up
Disconect the cars battery for a couple of min then reconect usually stops them going stupid. As someone else mentioned check the remote, in fact remove the battery and see if that helps, it shouldnt but who knows. This is a common problem and can be expensive.'
unlock drivers door, wind down window.
insert drivers key in ignition with smartlock remote attached
turn it to accessories on. make sure radio is off.
leave for approx 30 mins
locks will bounce and synchronise lock with key and remote.
ensure you remote has a fresh battery.