Why does the wiper jump on the coated windshield?
2 Answers
It is probably because the wiper is too hard. Try replacing it with a softer frameless wiper. After the glass is coated, it becomes smoother, but its adhesion also increases. If the adhesion between the wiper and the glass is too strong, the wiper will jump. For example, it's like sticking a coin to an incense burner in a temple. Below is some relevant information: Waterproof function: Rainwater falling on the treated car glass will quickly form small water droplets under the effect of the protective layer. When the droplets grow large enough, they will slide down the glass due to gravity, taking away dust from the glass and effectively cleaning it. Anti-freeze function: The treated glass has a protective layer, preventing snow or fog water from freezing solidly on the glass in winter. Snow accumulated on the glass can be easily removed, saving the trouble of clearing it and reducing waiting time.
The wiper blade jumping is closely related to the coating. When my car was first coated, the wipers also jumped a few times. Later, I observed that the coating layer was too smooth, and the old wiper rubber had aged and hardened, causing excessive friction with the glass surface, making the wipers tremble when wiping. Additionally, excessive oil film or dust buildup on the glass can also cause the wipers to jump. The most annoying issue is uneven low-quality coating, where some areas are smooth and others are rough, causing the wipers to bounce when passing over uneven areas. Later, I replaced them with soft rubber wiper blades and regularly used glass cleaner to remove the oil film, and now they hardly jump. It's recommended to check the wiper condition after coating—safety comes first.
