Mercedes-Benz 400SEL Window Regulator Replacement Cost.

The average cost for a Door Window Regulator Replacement is between $371 and $645. Labor costs are estimated between $272 and $345 while parts are priced between $99 and $300. Estimate does not include taxes and fees.
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Best Practices

Door window regulators can fail but the door window motor may continue to operate as expected. In this case, if the motor tests okay and is available separately, only the regulator needs to be replaced.

Common Symptoms

A failing door window regulator can cause a window not to open or close. The window could also make a lot of noise or stick intermittently. Lastly, the window glass might drop inside the door.

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