My situation is a bit odd. Passenger door unlock stopped working this summer. You could hear the actuator working, but just didn't have enough "umph" to open lock. The other doors all locked/unlocked just fine. Car has 20 AMP fuse in it. So, I figure some time in future I will have to replace the actuator.
Now, fast forward to this winter. I live where in the winter it is cold, snowy, etc. Now, in this cold, snowy enviroment (average temp at or near freezing), the doors lock and unlock, ALL of them, work just fine. The passenger door unlocks like it's supposed to. Kind of odd, but in summer passenger door won't unlock, but in winter it does. Weird.