What is the symbol for the defogger button?
2 Answers
The symbol for the defogger button is a fan-shaped pattern with three upward-pointing arrow lines, indicating front window defogging, while a rectangular frame symbol represents rear window defogging. Fogging on vehicle glass is a common issue that can easily lead to accidents due to reduced visibility. Proper use of the window defogging function can effectively reduce traffic accidents caused by fogging. In extremely humid weather, avoid using the defogging mode while the air conditioning is operating. The temperature difference between the outside air and the windshield can cause fogging on the outer surface of the windshield, obstructing the driver's view. When the humidity inside the car is high, the windows are prone to fogging. Turning on the AC switch can dehumidify the air from the vents, effectively defogging the windshield.
The defrost button usually features a fan-shaped glass with three upward-wavy lines, specifically designed to tackle fogging on the windshield. Having driven for ten years and seen dozens of car models, I can confirm that almost all vehicles use this symbol. It's typically placed near the air conditioning panel alongside the square rear-window heater icon. Pressing it activates maximum airflow directed at the windshield. Key tip: For quick defogging, remember to turn on the A/C switch to engage the air conditioner in dehumidification mode – just blowing warm air alone will make the glass even blurrier. Windshield fogging during rainy drives is extremely dangerous, making this button an absolute lifesaver.
