What to Do When There's Fog on the Outside of the Car?
2 Answers
You need to turn on the front window defogging mode, then adjust the fan speed to the maximum, turn on the A/C switch, and set the temperature to the lowest. Opening the window can increase air convection, reduce the temperature difference between the inside and outside of the car, and weaken the conditions for fog formation. This method is not suitable for rainy days.
I've been driving for years and encountering foggy conditions outside is quite common. It's mainly due to temperature differences or high humidity causing condensation on the outside of the glass. Dealing with it isn't difficult: first, turn on the wipers for a few swipes, which usually clears the fog layer; if the fog is thick and the wipers aren't effective, activate the air conditioning's defogging function, increase the airflow, and direct it toward the windshield to quickly remove moisture. For prevention, I always thoroughly clean the exterior surface of the glass during car washes to prevent dust buildup that can cause fogging; I also apply an anti-fog spray to the glass every year, which is cheap and effective, significantly reducing fog on misty days. Most importantly, safety: when visibility is poor due to fog, I always slow down and, if necessary, pull over and turn on the hazard lights. These small habits have helped me and my family a lot, making driving much safer.