What are the reasons why a car window can only go down but not up?

[VonHayden]

A car window can only go down but not up due to the following reasons: 1. Aging and deformation of the glass seal strip; 2. Dirt or foreign objects in the window lifting guide rail; 3. Low battery power; 4. Motor malfunction; 5. Window regulator failure; 6. Mismatched glass seal strip; 7. The lifting function is turned off. The methods to operate the car window are: 1. Press and hold the switch, then release it when the window reaches the desired position; 2. Lift the switch, and release it when the window reaches the desired position. The functions of the car window include: 1. Protecting against wind and rain, and reducing noise; 2. Reducing wind resistance and guiding airflow; 3. Ensuring the safety of passengers; 4. Lowering the temperature inside the car.