If you have a lot of reflection, auto glass is on the rise or fall by half, driving on the bumpy road there will be a different ring, some even in the case of fully closed glass also can have different ring, what reason is this? There are several possible reasons for this:

1, screw/card loose loose cause. Include glass fixed screw, lifting guide screw, door, door, other screws etc.

2, there is foreign interference in the door panel. Such as business CARDS, COINS, etc., should be cleaned up.

There is a gap between the glass and the inner pressure bar. Tighten glass fixed screw or replace internal pressure bar.