What Causes Loud Wiper Blade Friction Noise?
4 Answers
Wiper blade friction noise is primarily caused by aging wiper blades, which necessitates replacement. Under normal conditions, wiper blades "wipe" the windshield smoothly. However, when the rubber blade ages, it fails to maintain proper contact with the glass, transforming the action from "wiping" to "scraping," resulting in significantly louder friction noise. As rubber components, wiper blades naturally harden and deteriorate over time. Typically, wiper blades should be replaced every one to two years. Wiper blades are essential tools on motor vehicles, designed to clear rainwater and debris from the windshield to maintain visibility.
The wiper making a screeching friction noise is most commonly caused by aging or worn wiper blades. After one or two years of use, the rubber material hardens and becomes brittle under extreme heat or cold, losing its flexibility and causing direct friction against the glass when in contact. My own car's experience was that after being parked outdoors for a few weeks in summer, the noise became loud, but it was immediately eliminated after replacing the wiper blades. Regular maintenance is crucial—it's recommended to inspect and replace them about once a year. Whenever possible, park in the shade to protect the wiper blades and extend their lifespan. If your budget allows, choosing silicone or graphite-coated blades can offer better durability and noise reduction. Don’t wait until they completely fail to clean the windshield; replacing them early saves trouble and hassle.
When there is dirt or an oily film on the windshield, the wipers may make a rattling noise as they pass over. Accumulated dust, insect remains, or road grease on the windshield create an uneven surface, leading to friction noise. I've noticed that this issue tends to occur more often when driving on dry glass after rain. Cleaning the glass is a simple solution—use a dedicated cleaner to scrub or apply an oil-removal product. After washing the car, take the time to wipe the glass surface a few extra times, and avoid parking in dusty environments for extended periods. If the noise is loud, don’t force the wipers to scrape, as this can damage the glass. Developing this habit not only ensures a quieter ride but also maintains clear visibility.
Improper installation or aging internal mechanisms can also cause noise. If the wiper blades are not securely installed or the arm pressure is uneven, they can produce scraping sounds. I once helped a friend adjust them by manually checking if the wiper arm tension was even—reinstalling them if loose made them quiet again. Worn linkage can also create friction noises, so it's best to have a professional technician adjust the system. Don't overlook installation details; proper adjustments make operation much smoother. Early detection makes repairs easier.
