Why Does the Wiper Make a Friction Sound When Wiping the Windshield?

[McMason]

Loud friction sounds from car wipers may be related to residual stains on the wipers and the quality of the wipers. The specific impacts and solutions are as follows: Impact of the Wiper Itself: Stains accumulated on the wiper can cause abnormal sounds during operation; uneven wiper blades may lead to deformation. Observe the direction of the wiper blades and adjust their position to ensure proper alignment between the wiper and the windshield; residual grease or oil on the glass. Parking under trees for extended periods may leave grease on the glass, causing abnormal wiper sounds; wiper aging or hardening. Weather conditions can lead to the hardening and aging of wipers over time. Solutions: Regularly clean stains on the wipers with a cleaning agent and remove residual grease from the windshield to prevent friction sounds during operation; replace the wipers if necessary to avoid aging due to weather conditions, which may render them non-functional.