What Causes the Abnormal Noise from the Car Wiper Motor?

[DelTheo]

Car wiper motor abnormal noise can be caused by issues with the wiper blade itself, foreign objects stuck between the wiper blade and the windshield, friction from the wiper linkage bushing, or noise from the wiper motor. Here are the relevant details: Wiper Blade Issues: Wiper blades are rubber products that can harden and age over time, especially noticeable in winter. If they no longer clean effectively, the simplest and most effective solution is to replace them. Generally, wiper blades should be replaced every one to two years. Foreign Objects Between Wiper Blade and Windshield: When the wiper is turned on, a sharp friction noise may occur between the blade and the windshield. Owners can check and clean any debris stuck under or on the wiper blade to ensure cleanliness. Wiper Linkage Bushing Friction: Over time, the wiper linkage mechanism may age, the wiper arm spring may lose elasticity, and the bushing may wear out or even fall off. Inspect the wiper arm or linkage bushing for issues. Wiper Motor: If the wiper motor itself is making noise, it could be a sign of the motor nearing the end of its lifespan. It is recommended to have it inspected in detail at a professional repair shop.