1. Windshield Dirt and Grime: A dirty windshield accumulates dirt, dust, grime, and other contaminants, which can create friction between the wiper blades and the glass surface. This friction prevents the wipers from moving smoothly and can cause them to skip or skid. Regular cleaning of the windshield with an appropriate glass cleaner and a lint-free cloth is crucial to maintain proper wiper performance.
2. Worn-out Wiper Blades: As wiper blades age, the rubber portion that contacts the windshield gradually wears out. This wear can cause the blades to lose their flexibility and ability to conform to the windshield's curvature, resulting in uneven contact. Worn-out blades tend to skip and skid, leaving streaks or uncleaned areas on the windshield. The recommended replacement interval for wiper blades is typically 6-12 months, depending on usage and environmental conditions.
3. Improper Blade Tension: The wiper arms that hold the blades against the windshield should exert the correct amount of pressure. If the tension is too loose, the blades might not make proper contact with the glass surface, leading to skidding. Conversely, excessive tension can put undue pressure on the wiper blades, causing them to wear out prematurely. Adjusting the wiper arm tension according to the vehicle manufacturer's recommendations ensures optimal performance.
4. Wiper Motor Issues: A faulty or malfunctioning wiper motor can affect the speed and smoothness of the wiper movement. If the motor is not providing sufficient power or is experiencing intermittent problems, it can cause the wipers to move erratically or skip across the windshield. Diagnosing and repairing any underlying wiper motor issues are crucial to resolving the skipping or skidding problem.
5. Windshield Treatment or Residue: Certain windshield treatments, such as water repellents or rain repellents, can temporarily affect the wiper's performance. Some treatments can leave a residue on the glass that interferes with the wiper blades' grip and can cause them to skid. Ensure that the windshield is clean and free from any treatments or residues that might hinder wiper operation.
To address the issue of windshield wipers skidding across the windshield, inspecting and cleaning the windshield, ensuring proper wiper blade tension, and replacing worn-out blades should be the primary steps. If the problem persists, further investigation into potential wiper motor issues or windshield treatments may be necessary.
