What Causes the Abnormal Noise When Wipers Wipe the Windshield?
2 Answers
The reasons for abnormal noise when wipers wipe the windshield are as follows: 1. Quality issues with new wiper blades: If the wiper blades are newly replaced, there may be quality problems, resulting in abnormal noise. 2. Wiper aging: The material of wipers is rubber, which is prone to aging after prolonged exposure to sunlight, wind, and rain. Generally, the lifespan of wipers is about one to two years. 3. Foreign objects between the wiper and the windshield: This is a relatively common issue, mainly caused by small sand particles or other debris, which not only produces abnormal noise but may also scratch the windshield.
Recently, while repairing cars, I often encounter the issue of wiper blades making strange noises on the windshield. The root causes are varied. The most common is aging wiper blades—the rubber hardens and becomes brittle due to exposure to wind and sun, increasing friction and causing squeaking or buzzing sounds. I’ve seen many cars where oil film or dust on the glass surface creates resistance, leading to harsh scraping noises. If the wiper arm’s spring is loose or misaligned, uneven pressure can cause jumping and abnormal sounds. Last winter, I worked on a car where the old blades froze stiff in the cold; replacing them with new ones solved the problem. The solution starts with checking the condition of the wiper blades and replacing them every 6 to 12 months. Next, thoroughly clean the windshield using professional degreasers to remove contaminants. Finally, adjust the arm angle. Developing good habits can prevent safety risks, especially during rainy conditions with poor visibility.
