What Causes Windshield Wiper Noise When Wiping Glass?

[DelEli]

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.

[DelAlaina]

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.

[SanAlejandro]

Back when I was repairing cars, I summarized several typical scenarios. If the edges of the wiper blades are cracked, they produce a sweeping broom-like sound. When the entire rubber strip hardens like plastic, it's bound to make a rattling noise. If the clips aren't securely fastened during wiper installation, the wipers tend to tremble. Weak springs in the wiper arms also fail to apply enough pressure. Some cars have windshields with scratched surfaces, causing even new wipers to make noise—this requires glass polishing. Forcing frozen wipers in winter damages the rubber strips the most, so always defrost ice with warm air before starting. Dry wiping with clogged windshield washer nozzles is the worst; simply unclog them with a needle. Rusty wiper linkages that squeak need lubrication, but if the wiper motor burns out, they stop working entirely. If the cause remains elusive, stubborn oil stains on the windshield are likely the culprit—apply oil film remover three times for smooth operation.

[DelStephanie]

Ladies, pay attention! The sound of windshield wipers resembling nails on a chalkboard is particularly annoying, and I’ve experienced it firsthand. It’s likely due to frayed rubber edges, and switching to beam-style wipers can usually solve the problem. Never turn on the wipers when the glass is dry—it will definitely damage the rubber! I’ve noticed that parking under trees often leads to sap buildup; cleaning it off with soapy water before wiping makes it much quieter. Starting the wipers at noon in summer can cause a squelching sound, so pre-wetting the windshield helps. Also, check for leaf debris under the wipers, as buildup can hinder proper movement. It’s recommended to use wiper fluid to clean the rubber edges monthly to extend their lifespan. If you encounter persistent noise, don’t ignore it—replacing them with a branded set costs just a few bucks and is far better than risking scratched glass.