Why can't the car window be rolled down?

[DeRylee]

The reason why the car window cannot be rolled down is: insufficient oil in the door's internal lifting mechanism, causing the window lift motor to enter an overheating protection state. The car window is an essential component of the vehicle body, designed to meet the needs of interior lighting, ventilation, and the visibility of drivers and passengers. Depending on the installation position of the glass, car windows can be categorized into: front and rear windshields, side windows, and door windows. Their design structure and quality significantly impact the driver's visibility, passenger comfort, exterior aesthetics, and aerodynamic characteristics. The causes of abnormal noises during car window operation include: 1. Loose fastening screws or lift mechanism brackets inside the window glass; 2. Aging of the window glass's sealing strip; 3. Debris in the window glass guide rails.