What are the solutions for fogging on the outside of car windows?
4 Answers
Solutions for fogging on the outside of car windows include: 1. Car defogger: Evenly spray the car defogger on the inner surface of the car glass and wipe it clean; 2. Soap method: Slightly moisten the soap to make it softer, clean the glass, then evenly apply the soap over the entire glass surface, wait for the soap to dry on the glass, and remove the dried soap with a tissue or newspaper; 3. Use the car defogger button: On the car dashboard, you can see a 'front' button, which is the front window defogger, and a 'rear' button, which is the rear window defogger. Turn on the front and rear window defoggers. Initially, the fog on the glass may become heavier, but soon the fog will be dried by the warm air from the air conditioner, and the water vapor inside the car will disappear. The windows will remain fog-free for a long time, and the interior of the car will become warmer.
Fogging on the outside of car windows is usually caused by temperature differences or humidity issues, and I've experienced this countless times. The defogging button on the air conditioning is the most convenient solution—I can handle it with either cold or warm air, and increasing the fan speed works even better. If the fogging is severe, I turn on the external air circulation to improve airflow and reduce moisture condensation. In summer, I simply blast cold air, while in winter, I preheat the windows with warm air before switching back to defogging mode. I also carry a clean, soft cloth to wipe the windows manually, especially during rainy or foggy weather when parked—I’ll turn on the air conditioning beforehand to dry the glass. Prevention is key, so I’ve made it a habit to ensure my windows are clean and free of grease before driving, and I avoid leaving wet clothes or hot drinks inside the car to minimize fogging. Remember, safety comes first—never use the recirculation mode when fogging occurs, as it only worsens the problem. If visibility is poor, pull over to handle the issue safely.
When I first learned to drive, I used to get really nervous whenever the windows fogged up. Later, a friend taught me to use the air conditioning defogging function to solve the problem, and now I stay much calmer in such situations: after starting the car, I press the AUTO button to let the air conditioning automatically adjust the airflow and temperature, or simply turn the temperature knob to cold air mode, and the fog quickly clears. When the windows fog up, don’t rush to open them for ventilation, as it might let in more moisture; I usually press the rearview mirror defogging button to help clear it. If the fog comes on quickly and heavily, I’ll pull over in a safe spot and wipe the outside of the windows with a tissue. Here’s a tip: try to keep the interior dry, avoid eating hot food in the car, or minimize opening the sunroof to reduce condensation. Handling it this way is not only simple but also makes every trip more reassuring without any panic.
The reason for fogging is simple: when the hot air inside the car meets the cold temperature outside, it condenses. My solution is to prioritize using the air conditioning defogging function—either cold or warm air works, along with turning on the fan, and the fog usually clears within two to three minutes. For prevention, I regularly apply defogging agents to the windows; one application lasts several days, reducing moisture buildup. I also make sure to close any gaps when opening windows to avoid drafts that cause temperature differences. In winter, I switch to external circulation before turning on the heater to introduce fresh air and prevent repeated fogging. These small habits save me time and ensure safer driving.
