How do you turn on air vent on ml350?

To turn on the air vents in a Mercedes-Benz ML350, first, ensure the vehicle is on and the climate control system is activated. Use the climate control buttons on the center console to adjust the temperature and fan speed. You can also direct the airflow by adjusting the vent controls located on the dashboard. Make sure the air distribution settings are set to the desired mode, such as face, floor, or defrost.