Thanks Dojj, problem is when locking with the remote, the locks just ping open again, when locking with the key in the door the doors lock apart from the nearside rear door. Also the boot release button on the dash doesn't work and the boot release button under the handle works sometimes.

Also, with the engine running, slam the drivers door and the doors will either lock or unlock themselves.

so do you think it's the unit inside the drivers door and not the GEM unit?