My rear passenger window motor on b6 Passat did not work either at door switch or drivers switch. When wiring loom unplugged and reconnected at the rear door, the window would work at rear door switch only for just over a minute or so but would not go auto up and down. After the minute or so the window would stop working as though there was no power. There does not appear to be any breaks in the cable at the rear door. Is there anything else to change or do you have to 'teach' the car that there is a window there? If so, how?