Ck fuses first of all. Then ck at the window motor with a test light or volt meter if you have 12volt at the window motor with the switch depressed. The window regulator may be broken. If you need to get the window up to keep out the rain, pull the motor off of the regulator and you should be able to manually hoist the window closed. Then take a piece of 1"x2" wood cut to length and wedge the window to keep it closed. If the fuses are good you cad carefully take the switch apart and clean the contacts in the switch, Remove the switch and carefully release the rocker part of the switch by inserting a small screwdriver between the rocker and the switch housing. BE CAREFULL as there are small ball bearings at the bottom of the switch. Clean the contacts and re assemble the switch. Good luck.

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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.