What is the cause of abnormal motor noise when the car headlight levelling motor adjusts the height of the headlight?

When adjusting the height of the headlamp, the abnormal sound of the motor is caused by the failure of the regulating motor. The reasons for the abnormal sound of the motor are: bearing failure, magnetic steel loose and falling off, axial movement, rotor appears to be swept and so on.

If the problem caused by the abnormal sound of the motor, it must be solved at the first time. The adjustment method of headlamp height is as follows: the car is equipped with the headlamp height adjustment control device, which can manually adjust the headlamp light height.

For vehicles with manual headlight height adjustment device, the control device is located on the external light controller device on the left side of the steering wheel to adjust the headlight height by rotating adjustment gear; Automatic adjustment of headlight height, according to the body self-sensing to adjust.