Are you hearing a crunching, grinding noise every time you press the window switch? Is the window not moving? Chances are, your window regulator has broken and must be replaced. This is one of those items that unfortunately has a long history of failure. Replacement involves removing the inner door panel and drilling out the rivets
Begin by disconnecting the battery. Do this before you do anything else. You will be working around the airbag mounted in the door as well as the power leads to the window motors and power seat switch. If you happen to accidentally touch a lead with something metal, you risk shorting out the system, triggering the airbag or worse. Be safe here, remove the small plastic window at the bottom of the rear seat on the right side and disconnect the battery. Let the car sit for a half hour before you do any work on it. This allows the system to discharge and prevent any potential problems.
In this article, we will go over the procedure for replacing both the front and rear window regulators for the Mercedes Benz W210 chassis. The front and rear windows use two different types of regulators. The front regulator uses a scissor style design while the rear regulator uses a cable and pulley type setup. The rear window regulators seem to be more failure prone then the front due to the design of the cable and pulley setup.
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Time: 3 hours
Tab: $100
Tools: Torx and hex drivers :www.pelicanparts.com/Mercedes..., screwdrivers :www.pelicanparts.com/Mercedes..., rivet gun, drill :www.pelicanparts.com/Mercedes...
Applicable Models: Mercedes-Benz W210 (1996-03) :www.pelicanparts.com/catalog/...
Parts Required: New regulators :www.pelicanparts.com/cgi-bin/...
Hot Tip: Disconnect battery
Performance Gain: Windows roll up again
Complementary Modification: Replace clips on door panels.