Why Can't the Car's Power Window Close?

[ZaneMarie]

Car's power window cannot close due to: 1. Damage to the window regulator switch; 2. Motor overheating protection; 3. Blocked guide rails or aging rubber seals. Solutions for a car's power window that won't close: 1. Wait for the motor to cool down; 2. Clean the guide rails and apply some lubricant; 3. Replace the new sealing strip; 4. Replace the window regulator switch. The working principle of a car's power window is: relying on an electric motor to drive the crank handle to rotate the gear and lift the window. The power window device consists of a lift control switch, motor, regulator, and relay. The motor uses a bidirectional permanent magnet motor, controlling the current direction to make the motor rotate forward and reverse, achieving the window lift function.