Why is there a croaking sound when the wiper is scraping the glass? What should I do?

1. The wiper croaks when it is up

It means that the wiper frame is twisted upwards, and the wiper is stopped in the middle position (after the car is turned off, pull the wiper control handle toward the steering wheel), then gently lift it up, wrap the steel frame with cloth or soft things, and use a wrench or pliers Twist the part holding the package downwards a few times, try to scrape after resetting, the abnormal sound will be much smaller, if it is, repeat it again until the abnormal sound is eliminated. If it goes down, you need to twist it in the opposite direction until the abnormal noise is eliminated!

Note: The wiper has abnormal noise in the up and down directions, then the wiper needs to be replaced

2. Problems with wiper blades themselves

The wiper blade is a rubber product. It will age and become hard after a period of use. It is more obvious in winter. If the wiper blade is not clean, the simplest and most effective way is to replace the wiper blade. Generally, the wiper blades are recommended to be replaced every one to two years.

3. There is a foreign body between the wiper blade box and the windshield glass

When the wiper is turned on, there will be a sharp sound of friction between the wiper blade and the front windshield glass. The owner can check and clean the wiper blade or foreign matter under the wiper to ensure that the wiper blade is clean.

4. Linkage mechanism

The deformation of this mechanism or the influence of the motor, the gap relay, etc. (such as too fast or too slow or non-stop action) may cause abnormal noise, and because of the long time of use, its own mechanism deforms, is stuck, and rusts. and many more.

If it is a new wiper blade, it is recommended to check whether there is dirt or oil stains on the upper side of the glass. It is recommended to clean the glass with cleaning fluid or replace it with a new one. If there are abnormal noises, use tools such as pliers to adjust the angle of the wiper arm. However, it is best to go to the repair shop to adjust with special tools.

5. The windshield of the wiper is croaking. In most cases, the angle of the wiper arm is incorrect, which causes the wiper blade to jump on the windshield, causing abnormal noise.

If the wiper blade is normal, the angle of the wiper arm needs to be adjusted, and the wiper blade should be perpendicular to the windshield plane. You can find the pliers to get it yourself, put a rag on the head of the wiper arm, pinch it with the pliers, break it hard, try to make the wiper blade perpendicular to the windshield plane.