What is the Defogger Switch Symbol?
2 Answers
Automobile defogger switch: The front windshield defogger symbol is a fan-shaped pattern with three upward-waving lines, while the rear windshield defogger symbol is a rectangular pattern with three upward-waving lines. The following introduces the function and structure of the defogger: Function of the Defogger: The automobile defogger switch controls the car defogger, which is used to reduce moisture, fog, and frost on the front and rear windshields and exterior rearview mirrors to improve visibility. When there is fog inside the car, press the defogger switch and wait a few minutes for the fog on the glass to disappear. Structure of the Defogger: The defogger mainly consists of plates and a supporting device. The plates are usually made of two types of materials: polymer materials (such as polypropylene PP, FRP, etc.) or stainless steel (such as 316L, 317L, etc.). They are generally divided into streamlined and zigzag types.
The defroster switch is a commonly used feature in cars, and its icon design is very intuitive. The front windshield defroster symbol looks like a fan-shaped wavy line with an arrow pointing towards the glass; the rear window defroster features a rectangular icon with wavy lines, resembling a pattern of warm air dispersing. I remember when I first started driving, the rearview mirror got foggy after rain, and it took me a while to recognize the switch—it's usually located on the center console, often with an indicator light next to the button. Pressing it activates the heating or fan function, quickly clearing the fog, which is especially useful in humid weather. However, don't rely on it too much—regularly cleaning the inside of the windows can reduce fogging frequency and save battery consumption. Before every trip, I test the switch briefly to ensure it responds promptly, as poor visibility while driving is extremely dangerous. Nowadays, newer models might integrate this function into the touchscreen menu, making operation even more convenient.
