Q: Rear windows regulator assemblies replaced four times

asked by on

Four times I have had to replace the rear window regulator assemblies in my car. Twice on the driver’s side rear window and twice on the passenger’s side rear window. The main pieces, like the pulleys and parts that support the whole weight of the glass windows, are made of cheap plastic components that do not hold up under regular daily use and end up breaking. In addition, the motors do not shut off automatically when the windows are fully up or down. This causes significant stress that breaks the plastic components and also damage the device. The regulators are sold as one with the motor. The installation of the replacement regulators is difficult because of the rivets that hold the units in place. All of this causes a very expensive fee. Can you tell me any alternatives or even a way that I could do this myself to save some money?

Hello. This commonly occurs on this vehicle due to the windows binding up in the tracks. When this occurs, it puts extra stress on the components which causes them to break. If the windows are moving fine and smooth, then the issue may be in the window switch itself.

This is what allows the window to stop when it reaches the correct spot. It does this by detecting the change in amperage. It needs to be tested by doing an amperage draw test to see if it is failing. If you need to have this done, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the window problem in order to have this corrected properly.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Rear windows regulator assemblies replaced four times

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Serpentine belt came off

A thrown belt is generally caused by either a seized peripheral - such as an alternator - AC compressor, or possibly a faulty tensioner or idler pulley. It is often suggested that if a belt has been thrown, that the...

Q: Was told that I need my valve cover gasket replaced. It is the drives side 1998 Mercedes C280

Hi there - I believe the "gasket" you mention that is actually leaking is one of a handful of rubber grommets for the bolts that hold on the valve cover gasket. They require removal of the valve cover gasket to...

Q: Convertible top not retracting

If you noticed something different than usual when opening the top, then that's where I would start. That being said, the soft top is an extremely complex system and would require someone with access to troubleshoot the flowcharts from Mercedes....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.