What Causes the Sound When Car Wipers Scrape the Windshield?

[JuliaDella]

Reasons for the sound when car wipers scrape the windshield: 1. Aging of the wiper causes the rubber part to wear or fall off, resulting in abnormal noise due to friction during the wiping process. This is a normal phenomenon, and it can be resolved by timely replacement; 2. If there is no water on the windshield during wiper use, leading to insufficient lubrication, abnormal noise may occur; 3. The presence of hard impurities such as sand or stones on the windshield can also cause abnormal noise due to friction during wiper operation. Larger impurities on the windshield need to be cleaned off; 4. Damage to the wiper linkage mechanism. In this case, it is necessary to visit a repair shop for professional repair or directly replace the wiper with a new one.

[GrahamDella]

After driving for so many years, I often encounter situations where the wipers squeak when wiping the windshield. The most common reason is that the wiper blades have aged and worn out, with the rubber strips becoming hard or cracked, causing excessive noise when rubbing against the glass. Additionally, if the windshield surface is dirty—such as with accumulated bug residue or oil film—the wipers will sound like they're grinding when in use. I remember once after rain, I checked and found that the wiper arm pressure was incorrect, causing uneven wiping and strange noises. Whenever this happens, I always recommend first testing with old wiper blades or cleaning the windshield with white vinegar. If the noise persists, it's time to replace the wiper blades—it saves money and improves driving safety. Don’t let this noise affect your visibility in the rain.

[DelStephanie]

As a young car owner, I'm very mindful of daily expenses, so when my wipers start making noise, I first check for wiper blade wear and windshield cleanliness to avoid impulsively replacing them at the first sign of trouble. Try cleaning the glass with alcohol to remove grease or adjusting the wiper arm pressure settings—this often solves the problem. I've also noticed that in dry or windy conditions, dust can make the rubber blades rough, causing noise. A regular spray of wiper fluid for lubrication helps maintain quiet and safe operation without frequent costly maintenance.

[RiverLynn]

As an experienced driver who has driven many cars, wiper noise is mostly caused by aging rubber blades or dirty windshields, especially during dry seasons. Simply check if the wiper blades have hardened and the balance of the wiper arms to easily eliminate that screeching sound.