What Causes the Abnormal Noise When the Window is Fully Closed on Bumpy Roads?
2 Answers
Window abnormal noise may be caused by the abnormal width of the window glass guide channel. This leads to friction between the glass and other parts when driving on bumpy roads, resulting in abnormal noise. The following is an introduction about car windows: 1. Introduction: Car windows are windows set on the four walls of the compartment to block wind and rain without obstructing the view. They are generally made of glass materials, and with the passage of time, car window glass has also evolved rapidly. 2. Classification: Safety glass—laminated glass, tempered glass, and zoned tempered glass, among other varieties, have greatly improved the performance of automotive glass. 3. Composition: Ordinary automotive glass is made of silica glass, with the main component silicon oxide accounting for more than 70%, and the rest composed of sodium oxide, calcium oxide, magnesium, etc.
The car window makes abnormal noises when bumpy, mainly because the window sealing strip has aged or deformed. The sealing strip is made of rubber, which hardens and shrinks over time, causing squeaking sounds when rubbing against the glass during bumps. Another reason is loose screws on the window regulator guide rail, leading to shaking and impact noises when bumpy. Additionally, if the clips or brackets inside the door are worn or loose, they may collide and produce sounds during vibrations. Having driven for many years, I've encountered similar issues. It's recommended to first check the condition of the sealing strip. If there are cracks or detachment, you can try lubricating it with silicone oil or directly replacing it with a new one. Tightening the guide rail screws also helps, but avoid disassembling the door panel yourself to prevent damaging internal wiring. Although the noise seems minor, ignoring it may worsen the problem. It's advisable to have a professional shop inspect the overall door structure during regular maintenance.
