What Causes Windshield Wiper Noise When Wiping Glass?
2 Answers
Car windshield wipers make noise when wiping glass due to the following reasons: 1. Impurities on the glass or quality issues with the wiper blades. Over time, the rubber strips (wiper blades) may age, deform, or harden, preventing proper contact with the glass. 2. Deformation of the linkage mechanism or issues with the motor and intermittent relay (such as operating too fast, too slow, or continuously). With prolonged use, structural deformation, jamming, or rust can cause abnormal operation. 3. Poor motor performance. Windshield wipers are tools installed on the front glass of motor vehicles to prevent rainwater and other debris from obstructing vision by performing simple cleaning.
I've noticed many car owners complain about wiper blades making squeaky noises, and there are actually quite a few reasons for this. The most common one is aging wiper rubber—when it hardens or cracks, it tends to skip and jump on the windshield. Oil film on the glass can also cause slipping; my friend's car once had wipers skipping all the way because he often parked near a restaurant kitchen, where grease fumes coated the windshield. Another issue is when the wiper arm spring loosens and can't apply enough pressure, or when the windshield gets pitted by sand and gravel, leaving streaks. Forcing frozen blades to move can tear the rubber, and summer heatwaves can make the blades stick to the glass, causing loud noises during the first few wipes. If swapping the blades doesn't fix the noise, check if the wiper arm angle is correct—adjust it gently with pliers if needed. Oh, and not using enough washer fluid leads to dry wiping, so it's always smart to keep an extra bottle in the car.
