What to Do When the Outside of Car Windows Frequently Fogs Up?
2 Answers
Turning on the defroster will definitely activate the air conditioning, which in turn starts the compressor. Be mindful of fuel consumption. When fog appears on the front windshield, you can open the windows and let the wind blow for a minute or two. The same principle applies here: balancing the temperature difference between the inside and outside of the car, allowing the humidity inside to dissipate with the wind. Directly turn on the heater to dry the moisture inside the car. As long as the air inside the car is dry, there will be no fog on the front windshield. Consider purchasing defogging agents to remove the fog. There are many defogging agents available on the market now, with anti-fog effects that can effectively increase by 30%, and they are very convenient to use.
Having driven for over twenty years, fogging on the outside of the windshield is a common occurrence, especially during rainy days or when there’s a significant temperature difference between morning and evening. The solution is simple: when fog appears while driving, immediately turn on the air conditioning, set it to defog mode (the front windshield icon), maximize the fan speed, choose cold or low-temperature air, and direct the airflow toward the windshield—the fog will clear within minutes. Prevention is also crucial: regularly clean the exterior of the windows with a clean, slightly damp cloth to remove grease and dust; when parking, choose a dry, shaded spot to avoid excessive temperature differences. I also recommend checking the car’s seals to ensure no leaks around the doors and windows, reducing moisture ingress. This small habit can significantly lower the frequency of fogging, ensuring safer and more hassle-free driving.
