It draws in outside air and circulates it throughout the cabin, helping to keep the air inside the car fresh and comfortable. The vent can be opened and closed manually, and its airflow can be adjusted using the climate control system.
Here are some additional details about the fresh air vent in the BMW E90 320i:
* It is located on the driver's side of the dashboard, near the windshield.
* It has a small, rectangular opening that is covered by a mesh grille.
* The grille can be opened and closed by sliding it up or down.
* The airflow from the vent can be adjusted using the climate control system.
* The vent is designed to draw in outside air and circulate it throughout the cabin.
* It helps to keep the air inside the car fresh and comfortable.