The window switch controls the motor of the power window system, so when you press the switch it transmits an electric current to the window motor. When the motor is activated, the glass panel will move up or down depending on the way you press the switch.
Window switch functionThe window switch operates when the ignition switch is placed in the "run" or "accessory" position. When you press the switch, electricity is provided by the battery through the relay and fuse block. The relay and fuse block are key components too because that is what allows the window to roll up or down on command. The driver is also able to control all four windows via the master window switch, which makes it suitable for you when you need to crack open a window on a hot summer day.
Common issues with a faulty window switchA faulty window switch can cause the window to not roll up or down, all of them stop working, or only one works.