How to Solve the Impact Sound When the Wiper Swings Back?

[OCooper]

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.

[DelOmar]

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.

[JeffreyLynn]

The intermittent rattling sound from my windshield wipers is quite concerning, especially while driving. The primary causes are usually loose wiper arm screws or rusted/stuck linkage components. Here's what you can try: Locate the wiper arm connection points under the hood and tighten the bolts with a wrench; lubricate pivot joints using products like WD-40. Check if wiper blades are properly aligned and undamaged. If the noise originates internally, it might indicate motor transmission issues requiring disassembly for repair. For prevention, monthly cleaning of windshield frame debris and keeping it dry minimizes rust formation. Never ignore minor sounds - they could signal major failures compromising visibility safety. Exercise caution during DIY repairs to avoid glass damage. When troubleshooting fails, replacing the wiper arm assembly remains an affordable solution.

[SkylarLee]

When the wiper makes a knocking sound during its return swing, my first thought is that the screw is loose. Manually check the wiper arm, and if it feels loose, tighten the root bolt. Another common cause is the aging or deformation of the wiper blade—lift it gently to check for wear; replacing it with a new one is straightforward. Applying a bit of lubricant to the linkage joints can reduce friction noise. Dirt buildup under the windshield can also cause knocking, so clean it thoroughly with a brush. These DIY maintenance tasks save both time and money. Address any issues early for safety first.

[Dias]

When the wiper makes a knocking sound, I believe it poses the greatest safety hazard. It may indicate a bent linkage or loose motor bracket, which could lead to loss of control. Immediately inspect and tighten the screws. Lubricating the joints can alleviate the noise. However, if the sound persists, do not delay and go to a repair shop promptly. A professional inspection of the wiper transmission components and mounting points is necessary to prevent wiper failure. Test the system's functionality before driving in rainy conditions and address minor issues early.

[AubreyFitz]

I've been driving for many years and have encountered the wiper blade return knocking sound multiple times. It's usually caused by rusted linkage joints or improper installation. I lubricate the connection points myself with special grease spray, which helps. Check the windshield frame for blockages and remove debris to reduce friction. If it's a motor connection issue, reinforcing the bracket can alleviate the problem. Replacing with high-quality wiper arms or blades can also eliminate the noise. Regular car washing with attention to wiper system maintenance helps prevent faults. Driving safety is a matter of life, so early repairs save trouble.