What are the causes of wiper blade noise?

[EllieRose]

The causes of wiper blade noise are: 1. Issues with the wiper blade itself, it is recommended to replace it promptly; 2. Foreign objects caught between the wiper blade and the windshield, ensure the wiper blade area is clean; 3. Noise caused by friction in the wiper linkage bushing, inspect the wiper arm or linkage bushing; 4. Abnormal noise from the wiper motor, it is advisable to conduct a detailed inspection at a professional repair shop. The wiper, also known as a windscreen wiper, is a device used to wipe away raindrops and dust attached to the vehicle's windshield, improving the driver's visibility and enhancing driving safety. The wiper consists of components such as an electric motor, reducer, four-bar linkage mechanism, wiper arm spindle, and wiper blade assembly.

[VonAnthony]

I've been driving for over a decade, and the squeaky wiper blade issue is really annoying. The most common cause is hardened rubber due to aging, especially for cars parked outdoors under prolonged sun exposure - the rubber surface becomes full of cracks. Oil film on the windshield can also cause skipping and squeaking, particularly noticeable for cars frequently parked under trees where tree sap mixes with grease. Loose wiper arm springs may result in insufficient pressure, creating a clicking sound during operation. There's one easily overlooked detail: when installing new wipers, improper angle adjustment may cause only half of the rubber to contact the glass. Remember to clean dust particles off the blades during each car wash, and check for ice buildup before starting in winter. Replacing blades before rainy season is the safest approach - it's literally a lifesaver.

[AaliyahAnn]

Encountered too many cases of wiper noise during car repairs. Rubber blade deformation is the most common issue, and some car owners using dish soap to clean the windshield actually accelerate aging. Bracket deformation is quite hidden; last time, a car's wiper suddenly started jumping during operation, and upon disassembly, it was found that the linkage joint was worn. If there are stone pits on the windshield, they can accelerate rubber blade wear. It's recommended to lightly sand the rubber blade edges with sandpaper every three months to fix fraying. Before the rainy season, it's best to check the wiper pressure, using a spring scale to measure if the arm pressure meets the manufacturer's standards. Many cars now use frameless wipers, and when installing them yourself, make sure the clips are fully locked. Some noises are caused by excessive motor load, so don't overlook that.

[Desiree]

I've modified the wiper system several times myself. The noise is most likely caused by the rubber blade—when replacing it, make sure to remove the entire piece and avoid forcibly bending the bracket. Lightly sanding the contact surface of the rubber blade with fine sandpaper before rainy days can eliminate noise. For glass oil film, using a clay bar works best, and oil film removers from car washes are also effective. If you're handy, you can remove the wiper arm to adjust the angle—lightly tweak the joint with a wrench. Remember to regularly clean leaves and debris from the gaps in the deflector, as trapped foreign objects can also cause noise. Don’t skimp on wipers—buying reputable brand rubber blades will last longer.