power windows on mk3 supra (89)

cre · 11-25-2009, 10:41 PM

The contacts inside of the switches get built up with carbon and after a while it becomes excessive. If you are somewhat mechanically inclined you can take the switches apart and clean the contacts with some fine sandpaper or a green scouring pad.... it's not a difficult operation; I did my master window switch last week.

I had to clean the contacts on my master switch a couple years ago too... I'm sure it didn't need so much attention when the cars were newer; The fact that this occurs more frequently now that they are older has me stumped. At least it isn't a difficult project and once you've done it one time it's quick and easy thereafter.

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11-25-2009, 10:41 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The contacts inside of the switches get built up with carbon and after a while it becomes excessive. If you are somewhat mechanically inclined you can take the switches apart and clean the contacts with some fine sandpaper or a green scouring pad.... it's not a difficult operation; I did my master window switch last week. I had to clean the contacts on my master switch a couple years ago too... I'm sure it didn't need so much attention when the cars were newer; The fact that this occurs more frequently now that they are older has me stumped. At least it isn't a difficult project and once you've done it one time it's quick and easy thereafter.