What are the reasons why the car window cannot be rolled down?

[CarlosMarie]

The reasons why the car window cannot be rolled down are: 1. Insufficient lubrication in the door's internal window regulator. It is necessary to check the lubrication level inside the door's window regulator, and if insufficient, remove the inner cover to add lubricant; 2. The rubber seal is prone to aging, and excessive dirt in the window gap can affect the window's movement; 3. Motor malfunction. The window system consists of the window glass, window regulator, motor, relay, and switch assembly. Car windows are the glass panels installed on the four sides of the vehicle cabin to protect against wind and rain while maintaining visibility. They are typically made of glass materials. The one-touch window feature, also known as the one-touch power window, refers to the function where the window automatically rolls up or down with just a single press of the window control button.