I have a '94 Taurus with what I believe is a power window switch problem. The button on the master control switch for the left rear window doesn't work. Each of the other buttons work well. The switch on the rear door itself raises and lowers the window normally. I am not sure the master switch is bad. I am assuming that the wiring is properly connected to power the switch. Is it easy to remove the switch? If so, how do I do this? Are there contacts that I can clean? Or do most guys just buy a new switch and call it day?