What Causes Abnormal Noise in the Wiper Motor?
3 Answers
Wiper blade issues or wiper motor malfunctions can cause abnormal noise in the motor. If this occurs, it is advisable to promptly visit a repair facility for inspection and resolution to prevent motor failure. Wiper blade issues leading to abnormal noise in the wiper motor: During operation, the wiper encounters significant resistance, causing the motor to overload and produce abnormal noise. Wiper motor malfunction: Aging of the motor, lack of internal lubrication, or wiring connection problems can also result in abnormal noise from the motor.
When it comes to wiper motor noise, I have to remind you that this is often the result of mechanical part wear. As someone who has driven for many years, I've seen many cases: the gears inside the motor age or the bearings dry out, causing a squeaking sound when rotating, like metal rubbing. If the grease is gone or dust gets in, the noise becomes more noticeable. Another common cause is loose mounting bolts or unstable brackets, which amplify the noise through vibration. I recommend stopping the wipers temporarily to check if the noise occurs only at specific speeds, then simply inspect whether the wiper arm is stuck on the blade. You can try adding specialized lubricant to the motor interface yourself, but don't disassemble the internal circuitry as it can easily short-circuit and cause problems. Timely action is crucial; otherwise, the noise will worsen, and eventually, the motor may burn out, requiring expensive replacement. Driving in the rain without wipers poses a high safety risk, so it's best to have a repair shop conduct a thorough inspection.
I remember the first time I encountered strange noises from the wiper motor, I was really puzzled. The abnormal sounds usually stem from internal issues, such as poor contact at wire connections causing electrical buzzing, or worn motor brushes producing a rustling noise. It's most annoying on rainy days, as the noise distracts from driving. A simple check could be cleaning the wiper system to ensure no blades are obstructing movement. If you're handy, try removing the wiper arm to inspect for rust at the motor's mounting points. Personally, I regularly apply anti-wear oil to the transmission parts—preventive maintenance works well. But don't tamper with anything electrical; safety first. Final reminder: ignoring the noise may lead to motor overload and failure, increasing the risk of accidents in the rain. Get a professional to handle it promptly.
