vrs drivers window and lock intermittent fault.

Couldn't find a definitive answer anywhere so posting this.

My vrs central locking I believe is failing as it's refusing to unlock the drivers door only. It works if I lock then unlock again but it's refusing the drivers door more frequently as the weeks go by. Also the drivers window on half click stutters and moves erratically when going up and down.

I'm thinking it may be wiring either that or the switch module is failing for whatever reason. I may test with the old elegance set to check.

Help welcome