If you find that the car window lift motor is making a sound but the glass is not moving at all, this may be caused by several factors. The primary consideration is the condition of the main control module, for example, the main control module at the driver's position may have become loose or malfunctioning. Additionally, it is also possible that foreign objects have entered the interior of the slide rail, causing the glass itself to be unable to move despite the sound of the lifting motor. Another possibility is that the elevator itself has been damaged. When it comes to glass lifters, they are important devices responsible for the up and down movement of car door and window glass. According to the operation mode, it can be mainly divided into two categories: electric and manual. Nowadays, many cars adopt button controlled electric lifting method, and the core component of this method is the electric glass lifter. A complete electric glass lifter typically consists of multiple components such as an electric motor, reducer, guide rope, guide plate, and glass mounting bracket.