My 2001 Ford Expedition's driver side window will not go down, the master switch works because all of the other windows work fine, but the driver side will not go down. It makes the clicking noise when you hit the switch, you know the noise when electrical current switches directions. It works on the occasion which leads me to believe its just a loose connection or a dirty contact. I don't want to just rip the panel off because I don't know if I need to replace the switch or even the window's motor and I don't have the parts at the moment. Is there anyway I can tell what causing the issue without ripping the panel off, because they never are the same once removed.