My rear window, driver-side, goes up and down normally. The problem is that when I open the front door, it does not drop and pull back. So when I close the front door, it hits the rear. If I manually push the rear window down and back then close the front door, the rear pulls up and to the front perfectly. This is the 2006 Benz CLK 500 2-door convertible. Where do I begin to fix it?
Another question is that do I need to uninstall the convertibles to repair the rear window?
Thank you for any help.

 

I found the reason. When opening the front door, both the front and rear glass drop. The front glass drops 1/2 inch perfectly while THE REAR GLASS DROP ONLY AROUND 1/5 INCH.
HOW TO ADJUST TO MAKE THE REAR GLASS DROP MORE? Note that when closing the front door, the rear glass up-movement is perfect.

 

Did u find out what the problem was and how to fix it because I have the exact same happening to me

 

The windows glass is hold by three bolts. You can make 3 bolts loosen, adjust the glass, and tighten them again.
You have to remove the outer panel, then you will see some holes on the inner steel panel. Through these holes, you can access the 3 bolts tighten the glass. You have to push the button adjusting the glass up/down to make the bolt move to the hole to access it