What to Do When the Outside of the Windshield Has Fog That Won't Wipe Off?
4 Answers
If the fog on the outside of the windshield cannot be removed, you can use a defroster or open the window to expel the moisture. Below is an introduction to car windshields: 1. Introduction: The development of modern car exteriors is closely related to advancements in glass technology. Over 40 years ago, car windshields began using single-piece curved glass, gradually replacing flat windshields. 2. Function: Laminated glass involves bonding a transparent adhesive plastic film between two or three layers of glass, combining the toughness of plastic with the hardness of glass to enhance the glass's resistance to breakage. Tempered glass is made by quenching ordinary glass to create internal stresses, thereby strengthening the glass. When impacted, it breaks into small, blunt-edged pieces, reducing the risk of injury to passengers. Zone-tempered glass is a new variety of tempered glass that undergoes special treatment to maintain some clarity when cracked upon impact, ensuring the driver's field of vision remains unaffected. Currently, car windshields primarily use laminated tempered glass and laminated zone-tempered glass, which can withstand strong impacts.
I recently encountered the issue of fog on the outside of the windshield that couldn't be wiped off. First, it might be due to oil film or dirt adhering to the glass surface, making it hard for moisture to disperse. You can thoroughly clean the glass with windshield washer fluid after parking, ensuring both the inside and outside are clean and residue-free. Worn or aged wiper blades are also a common problem, so it's advisable to regularly inspect and replace them with high-quality silicone wipers, which are more effective at removing water mist. Another key point is the car's air conditioning settings—turn up the temperature and direct the vents toward the windshield to reduce the temperature difference between inside and outside, preventing external condensation. In cold weather, if the glass tends to frost or fog up, use a defogger spray or apply some soapy water as an emergency solution. When parking, it's best to choose a dry spot and avoid staying in humid environments for too long. Combining these measures usually solves the fogging issue easily, so don't wait until visibility is affected to take action.
I often encounter fogging on the outside of the windshield that can't be wiped away while driving in rainy weather, which is quite annoying. The solution is to first clean the glass with a damp cloth to remove surface dust and tree sap marks, preventing oil film residue. If the wipers are too old, replace them promptly, opting for soft rubber materials that are more scratch-resistant. Always turn on the air conditioning in recirculation mode and raise the temperature to reduce interior humidity that causes external condensation. I usually keep a defogger spray in the car—a quick spray and the wipers handle it effortlessly. In winter, preheating the glass with warm air for a few minutes before starting a cold engine also helps. Pay attention to parking spots, avoiding damp grassy areas when possible. These small tips are all learned from experience, ensuring driving safety without much hassle.
Excessive fog on the outside of the windshield that can't be wiped off is mostly due to dirty glass or faulty wipers. Clean the glass with professional detergent mixed with water. If the wipers are worn out, replace them with new ones—affordable and effective options are available for just a few dozen yuan. When using the air conditioner, increase the temperature and direct the airflow toward the glass to prevent external fogging. Remember to maintain your wipers regularly and avoid frequent use in frosty weather for a hassle-free and safe experience.
