They’re electrical parts. Need we say more? Each switch consists of two pieces of metal that come together to make an electrical connection between the door harness and the power window motor. The problem? We live in a climate with constant blowing dust and debris that blocks and destroys those connections over time. They’re also made primarily of cheap plastic and we all knows what that spells…T-R-O-U-B-L-E!
When everything works properly, you press the button the the window glass raises and lowers. No harm – no foul. It’s only when it fails to work – specifically when it fails with the glass in the down position, that we find customers to be most upset.
On your average 4-door vehicle, the master switch pack is likely to consist of the door lock switch, mirror, etc, but it will also contain 8 actual power window switch connections which can go bad. How nice of them to give us to many extra connections…