How to Properly Use the Front Windshield Defogging Button in an Audi A6?
3 Answers
Audi A6's defogging buttons are located in the center console button area. The front windshield and rear windshield defogging function buttons can be activated by pressing the corresponding switches. To quickly remove frost and condensation from the front windshield and side windows, the external air vents need to be directed towards the respective side windows. When the outside temperature is low, it is necessary to additionally activate the front windshield heating function, at which time the button will flash. The interior air recirculation mode is turned off. The temperature should be set to 22°C or higher, and the air conditioning (A/C) will automatically activate based on the ambient temperature.
I drive an Audi A6, and the front defogger button gets the most use during winter mornings. Look for the button with a fan-shaped ripple pattern in the center console’s AC control area—it’s usually next to the rear window heating button. When you press it, the AC automatically switches to external circulation, and the fan suddenly gets quite loud, so don’t be startled. Setting the temperature around 22°C works best for a comfortable mix of warm and cool air, which clears fog the fastest. I usually remote-start the car five minutes early, and the AC automatically defogs, making it hassle-free to just get in and drive. If it’s pouring rain, remember to manually turn on the AC—the compressor dehumidifies more efficiently. Oh, and don’t turn it off right after defogging; keep it on for three more minutes before switching to auto mode, or the windshield will fog up again.
When repairing cars, I often help Audi owners adjust this defogging function. It's actually just two steps: first, find the physical button with the icon of a windshield emitting steam and press it to light up, you'll hear the blower start humming. At this point, the air conditioning will automatically switch to the windshield defrost mode—don't randomly turn the air direction knob. The key is to turn on the recirculation mode for faster defogging, but don't exceed ten minutes, or the car will get stuffy. For newer models with touchscreens, simply tap the defogging icon in the air conditioning menu—the effect is the same. To permanently solve fogging issues, regularly replace the cabin air filter and applying an anti-fog spray on the glass also helps.
