How to Deal with Fogging Inside the Car?
3 Answers
There are two methods to deal with fogging inside the car: 1. Turn on the external circulation when fogging occurs inside the car. Introducing outside air into the car can remove the fog more quickly. Turn on the car's air conditioning cooling function along with the external circulation, and using the maximum airflow, it usually takes only about ten seconds to quickly blow away the fog on the glass. 2. To completely eliminate fog inside the car, you should choose to use hot air to blow the windshield. Similarly, first use the external circulation, select the air conditioning hot air and the front windshield air vent, wait for about 5 minutes, then switch to internal circulation or simply turn it off. In winter, using warm air to defog is more comfortable, but it takes longer to remove the fog with hot air compared to cold air.
That day I was driving in heavy fog, and the inside of the windshield was so blurry I couldn't see a thing. Fogging is often caused by temperature differences or humidity, and I deal with it immediately: turn on the defrost function of the air conditioner, set the fan to maximum, direct the airflow toward the windshield, and press the A/C button to quickly dehumidify. If cold air doesn’t clear it, I switch to warm air—it’s slower but more lasting. Remember to use the external circulation to let fresh air in and avoid keeping the internal circulation on for too long. For emergency fixes, gently wipe the glass with a clean cloth, being careful not to scratch it. Prevention is key: clean the interior glass weekly, apply anti-fog spray evenly, and avoid leaving water stains or dirt. Ensure the fan system works properly, and check that the fan buttons aren’t stuck before driving in the rain. Never drive at high speed when the windshield is fogged—pull over first and ensure clear visibility for safety.
With years of driving experience, I fully understand the danger of fogging inside the car—it can obscure the road ahead and easily lead to accidents. I’m accustomed to responding quickly when fogging occurs: press the air conditioning dehumidification mode, increase the fan speed, and aim it at the windshield. The A/C must be turned on because it effectively removes moisture and cools; if the weather is cold, warm air defogging lasts longer but requires a short wait. Opening the external circulation slightly helps cycle the air and reduce moisture buildup. For prevention, I simply wipe the inside of the glass before driving each day, apply a car-specific anti-fog agent for protection, and maintain the air conditioning system regularly to prevent blockages. Common causes include temperature differences between inside and outside the car or internal breath condensation, so it’s best to avoid opening windows for ventilation on rainy days. Safety comes first—stop and clear the fog immediately when it appears, never risk continuing to drive.
