The solution to abnormal noises in the 19 e300l sunroof models. I have never opened the sunroof before buying a car. Recently, I always feel abnormal noises above my head when driving, thinking it was abnormal noises from the sunshade or the rear roof. Then I went to the 4s store and stuffed various sponges in the 4s store. It didn’t work. They had nothing to do except plug the sponges, so they could only endure it. Then the abnormal noises became more serious when the sky got cold. It was suspected that when the skylight was on the sunroof, there would be no abnormal noises when driving when the sunroof was opened. Then when the sunroof was closed, there would be abnormal noises. Press the sunroof with your hand in the car. I obviously heard a sound, creaking, and then I felt that it might be caused by the skylight not being closed tightly. The skylight, the skylight skeleton and the body are not integrated. After a period of driving, the vehicle body is distorted and the road is bumpy. The pulley sleeve of the skylight may cause a bit slack. This cannot be cured unless the roof is removed and the skeleton and skylight are replaced again. That will mean that the nose will be bigger than the head. Besides, the buckle of the roof will break, and the abnormal noise will be more serious. Yan version said that the louder it is removed, the 4s cannot solve it. Don’t count on them, just do it yourself. It’s a very simple method. Find a sponge, which is not too thick, and then cut it into a long strip two centimeters wide. Lift the skylight up, and then put the sponge in. There is a groove. Don’t worry about leaking water. I have sprinkled it with water. No problem. The outside is a rubber strip to stop rainwater. Just put the sponge in a groove two centimeters wide inside the rubber strip, and then close the skylight. This way, with the sponge skylight, it won’t sound even if you press it with your hand in the car. There is no problem with the road test, no problem with the car body being twisted, and no problem with bumpy roads. The solution is very simple, which is to increase the gap between the car body and the sunroof to solve the problem perfectly. Drivers can try this method.