Which Button is the Defogger in the Car?
2 Answers
The defogger button in a car is marked with a fan-shaped symbol containing three upward wavy lines. Here are detailed methods for defogging inside the car: 1. Proper use of the air conditioning system: Park the car, start the air conditioning, turn the temperature control knob to the warm air direction, and press the defogger button to dry the windshield fog with warm air from the air conditioning. During defogging, you can switch the air conditioning to external circulation to allow fresh outside air to enter the cabin. Setting the compressor and fan speed to 25°C or higher can speed up the defogging process. 2. Use specialized anti-fog products: Before each use, spray evenly on the windows and wipe clean to form a transparent protective film on the glass, preventing fog formation. One application can prevent fog for about ten days to half a month. 3. Cold and warm air convection: If the fog is not heavy, you can open a gap in the windows on both sides to allow air convection inside the car. This will gradually equalize the interior temperature with the outside temperature, causing the fog to dissipate.
That day, I drove to pick up a friend, and shortly after sitting in the car, the front windshield fogged up. I noticed a fan-shaped button on the air conditioning panel with several upward arrows inside. Pressing it automatically directed the air vents to blow air onto the windshield, and the fog cleared in about a few dozen seconds. Later, a mechanic told me this button is called FRONT, and some cars also have a square-shaped REAR button for rear window defogging. When using it, remember to turn on the AC for better dehumidification. In winter, when fogging is severe, you can also combine it with a bit of warm air. Actually, the manual clearly labels which button is for defogging. It’s best to wipe the dust around the buttons when washing the car to prevent poor contact.
