What are the reasons for the failure of the driver's window to roll up/down in a BMW GT?

[DelaneyAnn]

Reasons for the failure of the driver's window to roll up/down in a BMW GT: Window lift motor damage or poor contact in the electrical wiring harness: If there is a burnt smell or abnormal noise from the door panel when holding down the window button, it is likely that the window lift motor components are damaged. In this case, it is recommended to directly contact a 4S shop or auto repair shop to replace the window regulator. Motor overheating protection: To protect the power supply circuit, window lift motors generally have an overheating protection mechanism. If the components overheat for some reason, the motor will enter an overheating protection state, resulting in window lift failure. In this situation, simply wait for the motor to cool down. Excessive resistance in the glass guide channel: During use, dust can accumulate in the glass guide channel, increasing resistance, which over time may make it difficult for the window to roll up. Regularly clean debris from the window glass guide rails or use lubricating grease for lubrication.