On my 92 SC300, my switchs are bad. I have to really pull back on the switch for the driver's window to come up, going down is fine. I also have a bad switch for my unlock button. I can lock the car just fine, but when i try to unlock the doors, i have to press on the unlock switch multiple times just for it to open. But if your winodw doesn't roll down or up at all, you might want to check the motor just like chubacabra said... good luck and Hope you find the problem :D