What Causes the Windshield Wiper to Not Clean Properly?

[MacKira]

There are several reasons why a car's windshield wiper may not clean properly: 1. The windshield washer fluid has not been replaced for too long. Generally, the shelf life of windshield washer fluid is 2-3 years. If expired washer fluid is used for an extended period, not only will the wiper fail to clean properly, but it may also cause noticeable scratches on the windshield, posing a certain safety hazard. Therefore, it is essential to replace the washer fluid regularly. 2. It could also be due to the wiper blades hardening. It is advisable to check the wiper blades every month to see if they have hardened. If they have, quickly clean them with a lubricant or simply replace them with new ones. Steps to replace the wiper blades: 1. First, lift the existing wiper arm to a 90-degree angle and slowly rotate the blade to a certain position. 2. Then, press the connector button between the blade and the arm to remove the old wiper. 3. Installation is the reverse of the removal steps.