What is the car defogging symbol?
3 Answers
The car defogging switch has two symbols: one for the front windshield and one for the rear windshield. Here is some relevant information about car defogging: 1. Proper usage: When there is fog inside the car, press the corresponding defogger switch, and the indicator light will turn on. After working for a period of time, the fog will disappear. The defogger will automatically turn off after exceeding the preset time. If the owner wants to manually turn off the defogger during the process, simply press the defogger switch again. 2. Preventing car fogging: Owners can always keep a defogging spray ready. The principle of the defogging spray is to use surfactants to leave a protective film on the glass surface, altering the surface tension of water molecules and causing fog droplets to coalesce into larger water droplets, thus not obstructing the view. When using it, simply spray it evenly on the glass surface and then wipe it clean with a dry towel.
The car defogging symbol is that iconic button icon on the dashboard, depicting a windshield with a fan-shaped design, usually conveying a sense of airflow or heating. When I first started driving, I often misread it, but now I understand its importance—especially in damp, cold weather when fog blurs the windshield. Pressing it activates the air conditioning system to blast strong airflow onto the front window, instantly clearing the fog and restoring clear visibility. The rear window defogger symbol is similar but features an electric heating wire icon; pressing it also helps prevent snow and ice buildup. In daily driving, I always make a habit of checking if it functions properly, as it directly impacts driving safety—never overlook it. Practicing its operation before setting off is the safest approach.
When I first started learning to drive, I didn't pay attention to the symbols on the buttons at all, until my instructor scolded me during a foggy rainy day when visibility was completely white. The defogger symbol looks like a combination of a small window and a whirlwind, located in the front row of the air conditioning control area. Using it directs airflow to the windshield to remove moisture and prevent fogging, instantly clearing your view. Later, I made it a habit to wipe it while washing my car every week to prevent dust buildup from affecting button sensitivity, and testing its function before driving. New drivers should familiarize themselves with these icons—they're super practical for rainy day emergencies.
