What Causes Wiper Blade Chatter?

[StRobert]

The causes and solutions for wiper blade chatter are as follows: 1. Wiper blade issues causing chatter: Wiper blades are rubber products that harden and degrade over time, especially noticeable in winter. If they no longer clean effectively, the simplest solution is to replace them. Generally, wiper blades should be replaced every one to two years. 2. Foreign objects between the wiper blade and windshield causing chatter: When activating the wipers, a sharp friction noise may occur. Check and clean any debris lodged under or on the wiper blades to ensure they remain clean. 3. Wiper linkage bushing wear causing chatter: Over time, the wiper linkage mechanism ages, the spring tension in the wiper arm weakens, and bushings wear out or even detach. Inspect the wiper arm and linkage bushings. 4. Wiper motor issues causing chatter: If the motor lacks sufficient power, it may indicate the end of its lifespan. A detailed inspection at a professional repair shop is recommended.