What are the reasons for the loud noise when wiper blades rub against the windshield?

[OBethany]

The reasons for the loud noise when wiper blades rub against the windshield are: 1. Incorrect installation of the wiper blade support frame; 2. Foreign objects trapped between the wiper blade and the windshield; 3. Excessive tension in the wiper arm spring; 4. Excessive wear on the friction surface of the wiper blade; 5. Uneven or deformed friction surface of the wiper blade; 6. Aging of the wiper itself. The wiper is a blade structure installed in front of the windshield, composed of a motor, reducer, four-bar linkage mechanism, wiper arm spindle, and wiper blade assembly. Its main function is to clear rain, snow, and dust from the windshield that obstructs visibility. The power source of the wiper comes from the motor, which is the core of the entire wiper system.