How to Turn on the External Air Circulation in a Vehicle?
2 Answers
To activate the external air circulation in a car, simply press the corresponding button on the central control panel. The button for external circulation is marked with an arrow pointing from the outside of the front windshield into the car, while the button for internal circulation is marked with an arrow that forms a circle inside the car. Below is an introduction to external and internal circulation: 1. External Circulation: The external circulation draws air from outside the car into the cabin, similar to opening a window for ventilation. However, it filters out impurities and harmful gases from the incoming air, preventing them from entering the cabin and polluting the environment. 2. Internal Circulation: Internal circulation recirculates the air inside the cabin. If the vehicle is in a harsh environment, such as during traffic jams or sandstorms, internal circulation effectively circulates the air inside the car, preventing stuffiness and blocking external impurities and harmful gases from entering. Generally, it is advisable to use external circulation when driving on highways and internal circulation on city roads. The car's air filter should be inspected and cleaned every year to prevent clogging and ensure the proper functioning of the air conditioning system.
Turning on the exterior air circulation is really simple. Having driven for over a decade, I know most vehicles have a button on the AC control panel featuring a car icon or an arrow pointing inward from outside—just press it. The illuminated light indicates successful activation, though button placement may vary across models (some near the steering wheel controls, others in the infotainment menu). When manually operating, I typically switch to exterior circulation right after starting the engine to refresh cabin air and prevent CO₂ buildup or fogging. In poor weather or polluted conditions, I toggle back to recirculation mode. Remember, the button design is intuitive—don’t fear mistakes; each press toggles the mode. Practice a few times to build familiarity. Before parking, verify the light’s status to ensure fresh airflow, keeping the drive comfortable and stuffiness-free.
