Being that my car is a 2010, with 100k on it, and is basically a semi-lemon, i have had to fix SOMETHING pretty much every month. So, that being said, i figured I would post something helpful. Recently, the passenger side window switch stopped working. The power window and everything on that side worked fine using the driver switch. I took the switch apart on the passenger side, very simple and somewhat tough design. I tried jumping the switch board itself with no results. So I decided to take a few days and think it over before buying anything. Finally, last night I took some family members to the airport and my father asked me to roll down the rear window, which suddenly didn't work either. I was able to use the master switch and all was well. Once at the airport, I let them get out then looked at the switch, and tried pressing it. No go, so I decided to fiddle with the window unlock/lock button. Because it was dark, I noticed that upon going from lock to unlock the little light on the switch itslef would go on then immediately shut off even if the master switches window lock button was in the unlocked position. So long story short, the problem was stemming from the lock/unlock window button on the master switch. I took it apart, ran a pence eraser on the switches board and wha la...all is well. No visible corrosion or anything (it will make more sense if you take a switch apart, its literally just a small motherboard looking thing), but they build up a film that is pretty much invisible to the ***** eye and a pencil eraser will get rid of it.