I've got this same issue, but it's with the rear drivers side door. Yesterday, the window started going down, but not up using the switch on the rear door, but the master controls on the drivers door would operate the window just fine. I'm not electrically inclined. I understand the basics of electronics, but things easily get beyond my grasp. I am pretty good at disassembling and reassembling small parts with correct functionality (I'm a Locksmith). Do you think this same thing needs to be done to the switch on the back door? Or would something be happening on the master controls that would cause the back door switch to fail?