What causes a clicking sound when the wiper resets?
2 Answers
It is highly likely due to wear or deformation of the wiper rubber blade, excessive resistance of the wiper, or slight deformation of the wiper arm caused by prolonged use, resulting in a clicking noise during operation. Below is relevant information about wipers: Introduction: The wiper, also known as a windscreen wiper, is a device used to remove raindrops and dust attached to the vehicle's windshield, improving the driver's visibility and enhancing driving safety. Due to legal requirements, almost all vehicles are equipped with wipers. Working Principle: The power source of the wiper comes from an electric motor, which is the core of the entire wiper system. The quality requirements for the wiper motor are quite high. It uses a DC permanent magnet motor, and the wiper motor installed on the front windshield is generally integrated with the worm gear mechanical part.
I was also a bit worried when I first heard the clunking sound of the wiper returning to its position. It was probably caused by a loose wiper arm or linkage. Since the wiper system is often exposed to rain and snow, the joints can accumulate water and rust over time, leading to wear or insufficient lubrication of the metal parts. My own inspection method is to park the car, turn off the wipers, and gently shake the wiper arm to see if there's any looseness. If there are loose nuts or screws, you can try tightening them with a wrench, but don't use too much force to avoid damage. If the sound persists, it could be due to aging motor mounts or issues with the entire transmission mechanism. In that case, I recommend visiting a repair shop as soon as possible to prevent the wipers from jamming during rainy weather, which could impair visibility and affect safety. After washing my car, I always spray some lubricant for protection, which helps reduce noise issues.
