Thats what one of my rear switches was doing (4 door) so if its always going up, and is playin up going down, then its the contacts in the switch itself... only problem there is the master switch on the drivers side looks to be stuck together pretty good (was when I looked at it, then gave up. Turned out to be the relay anyway) Try carefully getting into the master switch and clean the contacts. I'm confident this will cure your problem.