Air recirculation modeAir recirculation mode  - Deluxe automatic air conditioner - Heating and cooling - Controls - Audi A4 Owner's Manual - Audi A4

The air recirculation setting prevents fumes etc. from entering the interior.

Switching on the air recirculation mode

Ц Press the Switching off the air recirculation mode button ⇒ .

Switching off the air recirculation mode

Ц Press the Ц Press the  button, or button again, or
Ц Press the Ц Press the  button. button, or
Ц Press the button.

In this setting, the air is drawn from the interior of the vehicle, filtered and continuously recirculated. We recommend using the air recirculation mode in the following circumstances:

When driving through a tunnel or in queues of traffic, to prevent fumes entering the interior of the vehicle.

For reasons of safety you should not leave the air recirculation switched WARNING

For reasons of safety you should not leave the air recirculation switched on for too long. This mode prevents fresh air from entering the vehicle, so the windows can mist over if the air cooling is switched off. Bad visibility can cause an accident.