For abnormal sound caused by transmission failure, the owner can try to change the speed and direction to determine the specific cause of the failure, send it to a professional repair shop to check the faulty parts, and then replace them.
The abnormal noise caused by wear is mainly caused by insufficient lubrication, but it is necessary to judge whether it is the hinge position of the door or the window lifter, door lock mechanism and handle mechanism in the door. Try to choose the brands commonly used in 4S shops for lubrication and repair. Don't use engine oil or ordinary butter. It will freeze in winter and the harmful smell will affect your health.
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