
The following are the reasons why windshield wipers make squeaky noises: 1. Worn-out wiper blades: Wiper blades are made of rubber and will harden and wear out over time, especially in winter. If they no longer clean effectively, the simplest solution is to replace them. Generally, wiper blades should be replaced every one to two years. 2. Debris on the wiper blades: When the wipers are turned on, sharp noises may occur due to friction between the blades and the windshield. Check and remove any debris on or under the wiper blades to ensure they remain clean. 3. Incorrect wiper arm angle: This can cause the blades to bounce on the windshield, leading to noise. If the blades are in good condition, adjust the wiper arm angle so the blades are perpendicular to the windshield. You can use pliers wrapped in a cloth to gently bend the wiper arm for proper alignment. 4. Linkage mechanism deformation: Deformation of the linkage mechanism, motor issues, relay problems, or long-term wear and tear (rust, jamming, etc.) can also cause noise. If you've recently replaced the wiper blades, check for dirt or oil residue on the windshield. Clean the glass with a cleaning solution or try a new set of wiper blades.

I've encountered wiper noises several times in my ten years of driving, mostly due to aging rubber blades. Especially after summer sun exposure when the rubber hardens, causing squeaky sounds. Windshield oil film can also cause this, particularly after highway driving when the front end is covered with insect remains. Last time, a car wash attendant taught me to clean the glass with dish soap water and then polish it with newspaper, which worked well. Loose wiper arm springs can also cause insufficient pressure—those with DIY skills can adjust the angle themselves. If you don't want the hassle, just replace the wipers; they're cheap to buy online now—just remember to measure the size accurately and choose the correct connector type. Using windshield washer fluid with an oil-removal formula can also help alleviate this issue.

The most common cause of wiper squeaking is aged rubber blades. The rubber tends to harden and crack after about six months to a year of use. Dirty windshields also easily cause scraping noises, especially when parked under trees with sap covering the roof. I've found that regularly using glass degreaser works wonders - wiping the wiper blades during car washes helps extend their lifespan. In summer, avoid direct sunlight exposure to wipers and try to park in shaded areas. If the wipers feel rough during light rain, immediately use windshield washer fluid for lubrication - dry wiping severely damages the blades. Replacing wipers yourself is quite simple, just make sure to buy OEM-sized replacements. Additionally, faulty wiper motors can also cause unusual noises, in which case a repair shop visit becomes necessary.

Wiper blade aging and dirty windshields are the main causes. Rubber materials hardening in summer and becoming brittle in winter can affect the fit. When there is too much oil residue, they may not clean properly and instead produce noise; applying toothpaste to the glass and polishing can remove the oil film. Deformation of the wiper arm causing uneven pressure can also lead to noise, which can be temporarily fixed by manually adjusting the angle. If noise suddenly occurs while driving in the rain, spraying more windshield washer fluid can provide a temporary solution. Regularly check the edges of the rubber strips for cracks every three months, and proper maintenance can extend their lifespan. Rough surfaces at glass cracks can also cause noise, which requires timely repair.


