I have been searching the threads, but am not finding what I need to fix my windows. I have an 85 300d. I want to repair the windows, but need to have an idea of where to start and what to look for.

Drivers side front: Push the button down. Window goes down. Push the button up, nothing happens. When you pull the glass up, you can push the "up button" and the window regulator will hold the glass back up.

Drivers rear: nothing, no noise, nothing!

Passenger front: Works perfectly.

Passenger rear: worked at first but when you would push the button to go back up and the window reached it's "most up position" you would hear a bump...bump....bump....bump, coming from the window. Now it does not work at all and all you hear is bump...bump....bump!!

I really want to repair all of them, but priority is the front driver!!

Thanks!! JC

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1985 Mercedes 300D
2007 Mercedes C-350
1980 Mazda Rx-7 (SA22C)
2005 Jaguar XJR
2007 Jeep Wrangler