What Causes the Lower Part of the Wiper to Shake?

[DelKinsley]

The reasons and solutions for wiper shaking are as follows: 1. Foreign objects between the wiper blade and windshield causing shaking: When the wiper is turned on, there may be a sharp friction sound between the wiper blade and the windshield. The owner can check and clean any foreign objects on the wiper blade or underneath the wiper to ensure the area is clean. 2. Friction in the wiper linkage bushing causing shaking: Over time, the wiper linkage mechanism may age, the wiper arm spring may lose elasticity, and the bushing may wear out or even fall off. Please inspect the wiper arm or linkage bushing. 3. Wiper motor causing shaking: If the wiper motor itself lacks power and shakes, it may be a sign that the motor is nearing the end of its lifespan. It is recommended to have a more detailed inspection at a professional repair shop.