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99 c230 kompressor bas control moduel12/4/2023 ![]() Eventually, the window motor fails, and the window won’t go up or down. If you haven’t operated the windows, it may go up once, but if you try again, the window won’t go up. You won’t be able to raise it or lower it.Ī window motor will sometimes work intermittently. Once the window motor fails, the window will not operate in either direction. The window motor on Mercedes-Benz can prevent the window from going up and down. By going to the door module and looking at the data stream, you will press the window switch and see if the door module picks it up. Window switch operation can be diagnosed with a Mercedes-Benz scanner. If you don’t hear the window move up or down when you press the switch, the problem can be the switch itself. If the window switch is the problem, the power window may not move or work only in one direction. The window switch on the driver’s door may fail. Typically the door control module has a 40A fuse which can blow if there is a short or a bad window or seat motor. Check the fuse for the door control module as well. If your window doesn’t go up or down due to software issues, you will need to visit a Mercedes-Benz dealer and ask them to update the software versions for the door control module. On some models, such as S-Class and W221, the window module software may get corrupted and require an update. The module itself can fail and may need replacement. ![]() The door control module on a Mercedes-Benz is the main unit that controls the windows and seats. Here are some of the most common problems that prevent a Mercedes-Benz window from working correctly. The window goes down but not up, or vice versa.The window only moves a little and then stops.Grinding noise from the door when you try to move the window.In addition to the window not going up, you may also notice the following symptoms.
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