Why is there noise from the car wiper?

[Allie]

Noise from the car wiper is usually caused by the wiper blade itself, which can become aged and hardened after prolonged use. Wiper System: The wiper system is driven by a motor, which converts the rotational motion into a reciprocating motion of the wiper arm (the part other than the blade on the windshield) through a linkage mechanism, thereby achieving the wiping action. Wiper Structure: The wiper assembly consists of a motor, reducer, four-bar linkage, wiper arm spindle, wiper blade assembly, etc. When the driver presses the wiper switch, the motor starts. The motor's speed is increased in torque and reduced in speed by the worm gear mechanism, driving the swing arm. The swing arm then moves the four-bar linkage, which causes the shaft mounted on the front panel to swing left and right. Finally, the shaft drives the wiper blade to sweep across the windshield.

[SanEllie]

I just dealt with the issue of wiper noise last week. Found a layer of oil film on the windshield, and the sound disappeared after scrubbing with glass cleaner. Additionally, hardened or aged wiper blades can also produce squeaking sounds, especially those used for over two years. Small stones stuck in cracks of the blades can cause harsh scraping noises, which can be resolved by cleaning. If the wiper arm spring is too tight, it can also lead to noise, and this situation requires professional adjustment at a shop. It's recommended to clean the windshield first before replacing the blades. Those with DIY skills can handle the installation themselves, but adjusting the wiper arm requires professional tools. Safety comes first when driving in the rain—don't let noise interfere with your vision.

[FinleyRose]

Recently, I've done quite a bit of research on wiper noise issues, and found that the root cause often lies in the rubber blades. When rubber ages, it hardens and deforms, causing a clicking sound as it jumps during wiping. This is more common in cold winter temperatures. In some cases, loose wiper arm mounting screws can cause shaking and resonance during operation. When there are stubborn stains on the windshield, the wipers may produce jerky scraping sounds. The solutions are simple: replace aged rubber blades (silicone blades are recommended for better durability), tighten any loose screws yourself, and use toothpaste to scrub away stubborn stains on the glass. Cleaning the wiper blades every three months with a damp cloth to remove grit can extend their lifespan.

[MacDeclan]

The last time my wipers made strange noises was due to an installation issue. Aftermarket wipers with incorrect sizes scraped against the frame, causing a clicking sound. Sometimes, rust or jamming in the linkage mechanism can also produce a squeaking noise. Worn bearings in the wiper motor may emit a humming sound, requiring professional inspection. Insufficient tension in the wiper blade springs can lead to a flapping noise during operation. Prevention methods: Choose OEM-spec wiper blades and inspect the linkage every six months. During pre-rainy season maintenance, have a technician lubricate the moving parts. To temporarily eliminate noise, you can spray some rubber protectant on the rubber strips, but this is only a temporary solution. Avoid using dish soap to clean the rubber strips as it accelerates aging.

[DiCecilia]

Once during heavy rain, the wiper suddenly made a screeching noise. Upon inspection, it was found that the edge of the rubber blade was cracked. When rubber ages, the increased friction causes violent shaking and noise during wiping. If the wiper arm angle is incorrect, preventing the rubber blade from fitting snugly against the glass, it can also produce a flapping sound. Additionally, when the windshield is covered with tree sap or insect residue, the wiper may squeak. My solution: immediately replace the cracked rubber blade, which can be fixed by purchasing a new one online for just thirty yuan. Regularly use a dedicated glass cleaner to keep the windshield smooth. Adjust the wiper arm angle slowly with a wrench until it fits without any gaps. Develop the habit of spraying windshield washer fluid on sunny days to lubricate, which can effectively prevent abnormal noises.