#1) My two rear windows don't roll up/down all the time.
Sometimes after driving for an hour or so, they'll start working.

#2) Power locking works on my passenger rear door, but power unlocking doesn't. Also, manual lock/unlock both work.

Any tips or suggestions would be great. I think I need an actuator for the rear door?
Thanks

 

The window lift ECU module, behind glove box, has circuit board traces that burn off or have "cold" solder joints that have a mind of their own. Usually touching these up helps with a small soldering iron.

The door locks have a pair of wires to them, power is supplied in one polarity to lock, then a reverse polarity to unlock. If they work in one direction, it is not the wiring. Sometimes the door motor can be lubed. Sometimes replace. Removing door panels is best done with a plastic yupholstery tool that surrounds the fastener and gently pies it from the metal door frame. The door panel is structrual foam, and fasteners tear out of it easily.

 

Thanks so much for the info!
I am trying to remove the ECU to check the solder as you suggested.
I have removed the housing faceplate and both harnesses from the board.
However, the frame is in the way, and I cannot remove the ECU.
I will post a pic in a moment, any ideas?

 

Here is the image.
Do i need to remove a portion of the frame to slide out the ecu?

 

Mine wiggled out but I had glove box out. Gotta come out some way so dealer can put in a new one...

 

GOT IT!
I had to remove the two nuts holding the enclosure, then I could move the enclosure about an inch toward the door, allowing me to remove the ecu in the cavity.

I'll post pics of the underside in a moment

 

I'm guessing the rusty looking solders are the culprits?
If so, I will resolder these points

 

I checked all suspect solders with a continuity test and soldered any with a weak connection. ALL MY WINDOWS WORK NOW!

 

Now the door lock will neither lock nor unlock. I checked the leads going to the actuator, they are receiving power correctly. I'm ordering a new actuator now. Hopefully that will solve it.

 

Installed the new actuator, it works perfect.
Both issues are fixed now!