We are Having problems with the locking and unlocking of the car using the fob and after a bit of fiddling this is what I have come up with.
Fob won't lock car but if I leave it unlocked and go back after about 15 minutes all functions on the remote work except lock.
Lock the car on the key and leave again for about 15 minutes and all functions will work but will not lock with fob.

I have searched and have read lots of posts about battery failure, battery needing packing and interference of signal but don't think they would give these symptoms, or would they?
I am thinking along the lines of maybe an electrical problem or with the receiver, and it will probably require hooking up to diagnostics.
Has anyone come across similar problems or have any ideas as to what may be wrong?