
Volkswagen windows have two buttons for defogging: front windshield defogger and rear window heating. Front Windshield Defogger: The front windshield defogger works by directing the air conditioning airflow to the front windshield, reducing the temperature difference on both sides of the glass to achieve defogging. Rear Window Heating: When the rear window fogs up, the rear window heating function can evaporate the moisture, achieving defogging. (Note: The rear window heating function is usually combined with the exterior rearview mirror heating function.) Air Conditioning Defogging: Turn on the front windshield defogging mode, then activate the air conditioning cooling (A/C) switch, set the temperature to the lowest, and the fog will clear quickly. For automatic air conditioning, simply press the one-touch defrost button, and the remaining operations will proceed automatically.

With twenty years of experience driving Volkswagen cars, I've encountered window fogging all too often. On a Volkswagen, the defogger button is located on the air conditioning control panel. For the front windshield, press the fan-shaped button with wavy lines, which activates the fan to blow hot air and remove moisture. For the rear window, use the rectangular button for heating. I often face fogging on rainy days or cold winter mornings when starting the car—don't panic; just press the defogger button and let the fan run for a few minutes to clear it up. To prevent fogging, set the air conditioning to windshield mode during regular use, and keep doors and windows closed to block humid air. Also, a dirty cabin air filter slows down defogging, so replace it regularly. Clear visibility is crucial for safe driving—just press the right buttons instead of wiping haphazardly with a cloth.

The defogging function of Volkswagen cars is quite convenient. As a regular commuter who drives often, I find the buttons located in the air conditioning area. Press the fan-shaped ripple icon button to defog the front windshield, and the rectangular icon button for the rear window defogging. The system automatically adjusts the airflow and temperature for dehumidification upon activation, so don't wait until fogging occurs to act. I usually turn on the air conditioning for a few minutes before driving to prevent fogging, especially on rainy days with high humidity. Using the external circulation to expel moisture works even better. Don't neglect the maintenance of the air conditioning system, or its effectiveness will decline. In winter, turning on the heater can defog faster, while cold air works in summer. The button positions are similar across Volkswagen models, so remembering them saves trouble.

Driving a Volkswagen, the defogging operation is straightforward. On the air conditioning panel, there's a button with a fan-shaped ripple pattern for the front windshield defogger, and a rectangular one for the rear window defogger. I always press it, and with a blast of air, the glass clears right up. Good habits to prevent fogging: use the external air circulation to balance humidity, avoid making the interior too stuffy, and keep windows and doors tightly closed on rainy days.


