What to Do When the Windshield Fogs Up?
2 Answers
Solutions for a foggy windshield: 1. Turn on the hot air blower and switch the air conditioning to the external circulation mode, adjusting the air vents to the defogging setting; 2. Use an anti-fogging agent, but be aware that it may blur your vision, so avoid using it at night; 3. Open the windows slightly when the windshield fogs up to allow outside air to blow in, which will quickly disperse the fog; 4. Use a cloth to wipe the windshield if you're afraid of the cold or rain coming in through the window—just keep a towel handy and wipe vigorously whenever fog appears; 5. Apply dish soap or soapy water to the windshield, then rinse and dry it with clean water to prevent fogging.
I've been driving for over a decade and often encounter windshield fogging issues. In most cases, turning on the AC is the most effective solution: increase the fan speed, set the airflow direction to windshield mode, and switch the AC to cooling mode - the cold air can quickly clear the fog. In winter, using the external air circulation with warm air also works. For light fogging, you can pull over and wipe the glass with a clean cloth or tissue to remove moisture, but never attempt this while driving as it's dangerous. High humidity inside the car easily causes fogging, especially during rainy days or when there are many passengers. Try opening windows for ventilation for a few minutes or install an anti-fogging agent as prevention. Remember not to use internal circulation for too long to avoid moisture buildup. Once during rainy weather on the highway, my windshield fogged up badly - I immediately turned on the AC and it cleared in just ten seconds, which was crucial. Always prioritize safety - if visibility is poor, pull over to address the issue.
