See also:

Air inlet selection button
Select airflow by pressing the air inlet selection button “”. ON position (recirculation): Interior air is recirculated inside the vehicle. Press the air inlet selection button to the ON position ...

To enter the passive mode
If you wish to program the passive arming mode, have it done by your SUBARU dealer. ...

Confident, Agile Handling and Safety for any Road ... or any Weather
The new Subaru Legacy improves crash-worthiness and provides a stiffer platform for a smoother, quieter ride - but retains the crisp handling and balance Subarus are known for. Legacy 2.5i and 2.5 ...