clk 500 rear window
 

While trying to lower the top on a 2006 CLK 500 cab, all of the windows lower except the right rear passenger window goes down about an inch and stops, which stops the whole "lowering the top" process.
The top and all windows return to full "up" positions when the top switch is reversed.
Does anyone have any suggestions?

Likely a faulty rear window regulator.


-Dmitry