What are the symptoms of a faulty window regulator module?
2 Answers
The symptoms of a faulty window regulator are: The window does not respond when the switch is pressed to raise it. The motor feels weak when attempting to raise the window, or the window may not move at all. A faulty regulator can cause the glass to tilt to one side during operation, and windows with anti-pinch features may automatically lower after reaching a certain position. Below are the symptoms that may occur when the body control module is faulty: Automatic transmission models: Trunk cannot open, key cannot be removed from ignition, P gear gets locked, brake lights fail to illuminate (high-mounted brake light remains functional), windshield washer doesn't work, cigarette lighter doesn't work. (Including atypical faults: automatic door locking failure while driving, central locking failure, abnormal horn operation, abnormal wiper operation, starting failure, etc.). Manual transmission models: Trunk cannot open, parking lights fail to illuminate, brake lights fail to illuminate (high-mounted brake light remains functional), windshield washer doesn't work, cigarette lighter doesn't work. (Including atypical faults: automatic door locking failure while driving, central locking failure, abnormal horn operation, abnormal wiper operation, starting failure, etc.).
There are usually several obvious signs when the window regulator module fails. I've experienced it in my own car. At first, the window would roll up or down more slowly, and I could feel the motor struggling, sometimes making strange grinding noises, like squeaky or creaky sounds. Gradually, the window would only go up but not down, or vice versa, getting completely stuck in one position. I remember one rainy day when the window wouldn't go down, which really stressed me out. Also, when you press the button, there might be no response at all, not even the light turning on. This could be caused by burnt internal circuits or poor contact in the module. Worse, it can drain the car battery quickly because the faulty module keeps drawing power. If you notice these symptoms, it's best to have a professional check the module wiring promptly to avoid the risk of window failure at high speeds. For regular maintenance, it's recommended to inspect door seals to prevent rainwater from seeping in and corroding the module.
