When I purchased my 03 Disc the right rear passenger door would not lock and unlock with the remote or by using the interior lock/unlock buttons. In order to unlock the door I had to pull the indoor handle. Then to relock I had to manually push down the lock. Now the left rear passenger door and the rear utility door are now doing the same thing. You can hear little clicks as if the motor is trying to unlock them. I have lubricated the locking mechanisms and this has not helped.

Any ideas?

 

In my similar case, I had to remove the door interior to access the mechanicals. There is an activator rod with a ball and socket type joint that had popped loose. Sorry I can't be more specific it has been a spell since I fixed my door.

 

Mine is doing the same thing with the d/s rear door. I might dig into it a bit tomorrow and see what is up.