I took my door lock problem in to be fixed. Replacing the drivers and passenger side actuators was going to cost close to $800!! However, the service writer said he spoke to the person above him and both agreed that these systems shouldn't be failing. They offered to split the cost with me...just less than $400. Do it!
They had the drivers side in stock and had to order the passenger side. It's a good thing...replacing the drivers side resolved both problems. Apparently, the drivers side is sort of a master for all of the locks and fixing it fixed the passenger side. They all work...and since they only replaced the drivers side, I got out of there for about $140.