What Causes the Wiper to Buzz but Not Move?
3 Answers
The wiper buzzing but not moving could be due to impurities on the glass, poor quality of the wiper blade, or aging, deformation, or hardening of the rubber strip (wiper blade) caused by prolonged use. Below are other possible reasons: 1. Linkage Mechanism: Deformation of this mechanism or influences from the motor or interval relay may cause abnormal noises. Additionally, structural deformation over time can lead to abnormal operation, which may also result in noise. 2. Motor Part: Poor motor performance or issues with external circuit voltage can cause abnormal rotation or noise, such as insufficient working voltage. Furthermore, problems with the relay control section can also lead to abnormal operation or noise.
The wiper makes a buzzing sound but doesn't move, a situation I often encounter in my experience, especially during rainy or snowy weather. The main causes are usually mechanical jamming or electrical faults. Specifically, the motor is still running and making noise, but the driving part is blocked and unable to move the wiper arm. For example, rusted wiper linkage, lack of lubrication in the pivot, or blades blocked by ice or leaves can all cause this. I usually turn off the power first and manually try to move the wiper arm to see if it's flexible. If it doesn't move, it often requires adding lubricant; otherwise, the internal gears of the motor may be worn and need replacement. Never keep the wiper running continuously, as it can easily overheat and burn out the motor. It's best to have it checked at a professional shop to prevent future issues. Regular maintenance, such as cleaning the wiper groove and periodic lubrication, can reduce similar problems.
I once personally encountered the issue of wipers buzzing but not moving. Last month during rain, they suddenly stopped working with loud buzzing noises but no movement. Upon inspection, I found a blown fuse had cut off the current, causing the motor to idle. First, locate the car's fuse box (usually under the hood or marked in the manual), remove the wiper fuse to check for melting, and try replacing it. If it's not an electrical issue, the linkage might be jammed or frozen in snowy conditions. Clearing debris and applying WD-40 often helps. I recommend avoiding dry wiper blade operation in daily use—this extends component life and prevents such failures, saving you from last-minute panic that could compromise driving safety.
