What causes the abnormal sound of automobile wiper?

Cause of abnormal sound of automobile wiper: 1. The stain accumulated on the wiper is a major reason for the abnormal sound of the wiper. Removing foreign bodies and stains is the fastest solution; 2. The wiper blade is not smooth, which may cause the wiper blade to deform. Observe the direction of the wiper blade and adjust the direction to make the wiper and wiper cooperate with the front windshield; 3. There is residual grease or grease on the glass. Stopping under the tree for too long may leave oil stains on the glass. Causing abnormal sound of the wiper. Cleaning with cleaning agent can be solved quickly; 4, wiper aging, hardening. The long weather will cause the wiper to harden and age. Replace the wiper to solve this problem, and it is easy to damage the glass if it is not replaced for a long time.