Skip the auto shop - Our mechanics make house calls

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: The car through a serpentine belt

If the coolant leak still exists, the recommended service would be a leak diagnostic(https://www.yourmechanic.com/services/coolant-is-leaking-inspection). It is possible that a seized water pump bearing can throw the belt but all other causes, including bearing roughness in additional pulleys, have to be...

Q: Power steering quit working - 2001 Mercedes Benz SLK 320

Hello. It sounds like your engine drive belt broke. That sound you heard followed by all of the systems that stopped working is indicative of a failed belt. I would open the hood and see if the belt was there....

Q: Back power windows not working

Looking at the wiring diagram for you vehicle, it looks like the problem is probably in the driver's master switch. The only thing the back windows share is a common ground through this switch. It's also possible (though unlikely) that...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...