What are the reasons for the Volkswagen Polo window not being able to go up and down?

[StAlan]

Introduction to the reasons why the Volkswagen Polo window cannot go up and down: Loose screws on the window regulator: In this case, the window will vibrate and make abnormal noises. Window regulator stuck: All window regulators will not work. Long-term use of the vehicle: Due to reasons such as rubber aging and dust accumulation in the rubber guide channel of the window glass, the window glass often rises slowly or stops at a certain position. Some window glasses will tilt to one side when rising, making it difficult to rise, etc. Incorrect operation of the window switch in daily use: The correct way to use the window switch is: when lifting, lift the switch all the way, and when lowering, press it all the way. Avoid operating the switch bit by bit, as the contacts will instantly bear a strong current, leading to burning out the switch.