A faulty power window switch can cause the power windows to stop working, or to work intermittently.Google+
Car Problem Reports
Honda Civic Si Power Window Switch May Fail
Honda Civic Si Problem
Average Mileage: 105,000 mi (80,000 mi - 140,000 mi)
Visitor, 2007 Honda Civic Si
I have had a few times where when I roll the window up or down that the window will not stop rolling up and down. It's like it has a mind of its own. I got it to stop by holding the button in the roll down position, holding it in the roll up position did nothing.
Visitor, 2002 Honda Civic Si, 80,000 mi
Besides being very inconvenient, it wouldn't pass inspection without a working window so I replaced it.
Visitor, 2006 Honda Civic Si, 115,000 mi
drivers side power window switch replace
Visitor, 2002 Honda Civic Si, 85,000 mi
had to replace driver side automatic window motor