It could be due to damage to the retention cable of the window regulator. Additionally, some cars are equipped with an anti-pinch function for the window glass. When the glass encounters significant resistance while rising, the anti-pinch function may be mistakenly triggered, causing the window to automatically lower. This situation could be caused by issues with the sealing strip or the window regulator. Below are common faults related to car windows: 1. Damage to the window lift motor or poor contact in the electrical control wiring harness: If you notice a burnt smell or unusual noises inside the door panel when holding down the window button for a long time, it is likely that the window lift motor components are damaged. In this case, it is recommended to directly visit a 4S shop or auto repair shop to replace the window lift motor. 2. Motor overheating protection: To protect the power supply circuit, most window lift motors are equipped with an overheating protection mechanism. If the components overheat for some reason, the motor will enter an overheating protection state, causing the window to stop functioning. In this situation, simply wait for the motor to cool down. 3. Excessive resistance in the glass guide channel: The door glass guide channel is a detail that is often overlooked. Over time, dust can accumulate in the glass guide channel, increasing resistance and potentially making it difficult for the glass to rise. Regularly clean debris from the window glass guide channel or use grease for lubrication. 4. Loss of computer data: Disconnecting the battery, disconnecting the power or ground wire of the window control module during maintenance of other systems, or severe power loss when starting the engine can all cause the initialization data of the window to be lost, resulting in the window not functioning. In this case, the window lift needs to be reset. The method is: turn on the ignition switch, pull the switch up and hold it, continue holding for more than 3 seconds after the glass reaches the top, release the switch and immediately press and hold it to lower the glass to the bottom for more than 3 seconds, then repeat the upward movement once.
