What are the causes of wiper noise?

[StevenLee]

The causes of wiper noise are: 1. Aging of the wiper blade; 2. Foreign objects trapped between the wiper and the windshield; 3. Friction noise from the wiper linkage bushing; 4. Noise from the wiper motor. The wiper is a blade-like structure installed in front of the windshield, composed of a motor, reducer, four-bar linkage, wiper arm spindle, and wiper blade assembly. Its main function is to clear rain, snow, and dust from the windshield that obstructs vision. Maintenance methods for wipers include: 1. When using the wiper to remove dust from the windshield on sunny days, always spray glass cleaner and avoid dry wiping; 2. If there are stubborn or hard contaminants on the glass, do not forcibly remove them with the wiper; 3. When washing the car or performing daily cleaning, lift the wiper before gently placing it back—do not let it snap back suddenly; 4. In winter, clear any ice particles from the windshield surface before using the wiper.