Originally Posted by
RichieST
Take the door panels off and lubricate the whole locking mechanisms. If that doesn't sort it then going to be a new door loking actuator, pin pointing which one it is could be tricky though!
It will be one of the masters, i.e. driver or passenger door, another way is to unplug either one and then test for diagnostic purposes, but as you say otherwise for the fix.
Martin