What Causes the Abnormal Noise from Car Windows?

[VonKevin]

Reasons for abnormal noise from car windows: 1. Loose fit between the window regulator and the door: Although the window appears to be fully raised, the glass may not be tightly sealed, causing noise with slight road bumps. 2. Aging of the vehicle's sealing strips: When the sealing strips age, their adherence to the glass decreases, leading to glass movement and subsequent noise. 3. Debris on the glass surface: Small cards placed in window gaps by advertisers can widen the gaps, and the debris itself may produce noise at high speeds. 4. Aging of the door's fuzzy strips: These strips clean the glass surface and secure the glass to prevent movement.