How to Solve the Impact Sound When the Wiper Swings Back?
2 Answers
Wrap the steel frame with a cloth or soft material, then use a wrench or pliers to grip the wrapped area and twist it upwards a few times until the sound disappears. Be careful and patient during the operation, and avoid using excessive force. It's best to remove the frameless wiper before performing the adjustment. If you have no experience in this area, it's advisable to visit a 4S shop. Adjusting according to the principle will usually solve the problem in most cases. If the wiper blade makes noise during both up and down strokes, it's time to replace the blade.
The wiper makes a knocking sound when swinging back, which I think is quite common. Possible causes include a loose wiper arm, linkage mechanism failure, or an unsecured motor connection. First, try checking it yourself: open the hood and shake the wiper arm by hand to see if it feels loose. If so, you can tighten the mounting bolt with a wrench. Sometimes, lubricating the linkage joints can solve the problem—just add a few drops of engine oil or use a dedicated lubricant. Also, check if the wiper blade is worn or deformed, as improper installation may cause it to hit the edge of the windshield, resulting in noise. When washing your car, remember to clean leaves and debris from the rain gutter to prevent blockages in the mechanism. If the noise persists after troubleshooting, it's best to visit a professional shop to inspect the linkage or replace parts to avoid minor issues turning into hazards. Regular maintenance of the entire wiper system can extend its lifespan and ensure safe driving in rainy conditions.
