How to Defog Side Windows?

[VanessaLee]

First, turn on the car's air conditioning and adjust it to the hot air position. Then, activate the external circulation mode and direct the air vents toward the front windshield to blow hot air directly onto it. Spray some defogging agent or apply soap to the inner side of the glass. This can temporarily prevent fogging in that area.

[OCora]

Having driven for over a decade, I usually use the air conditioning to defog the side windows. First, press the fan-shaped defogger button, then lower the AC temperature and increase the fan speed—cold air blowing directly on the glass clears the fog quickly. I always keep anti-fog spray in the car; after washing, I spray it on the interior and wipe evenly with a soft cloth, which lasts for days. If fog suddenly appears, cracking the window slightly for airflow also helps. During rainy seasons, avoid leaving wet umbrellas or shoes inside—choose waterproof floor mats, as these details can reduce fogging significantly. Also, check if the window seals are worn, as poor sealing lets moisture seep in easily.