Howo Truck Windows Unable to Move Up or Down?
1 Answers
1. The car window cannot be raised due to a malfunction in the window switch. There are usually three main reasons: (1) Loose screws in the window regulator. In this case, the window may produce vibration and abnormal noise. (2) The window regulator is stuck; all window regulators fail to operate. (3) Over time, the rubber guide channels of the car window may accumulate dust or suffer from rubber aging, often causing the window glass to rise slowly or stop at a certain position. Some window glasses may tilt to one side during ascent, making it difficult to raise. (4) Incorrect operation of the window switch. The correct way to use the switch is to lift it fully when raising the window and press it fully when lowering it. Avoid repeatedly pressing the switch bit by bit, as this can cause the contacts to bear a strong instantaneous current, leading to switch burnout. 2. Solutions (1) Initialize the switch program. The initialization method generally involves turning on the ignition, holding the switch in the upward position until the window reaches the top, then continuing to hold for more than 3 seconds. Release the switch and immediately press and hold it down until the window lowers completely, then wait for more than 3 seconds. Repeat the upward hold until the window reaches the top and hold for more than 3 seconds again. Once initialization is complete, the window should regain its original functionality. (2) Different vehicle models may have slightly different initialization procedures. Refer to the owner's manual or consult a service station. If initialization fails despite following the correct method, the issue may lie with the left front door lock, body control module, door lock position switch, or lock cylinder switch. It is recommended to visit a service station for inspection and repair.
