Is the Car Circulation Light On Indicating External or Internal Circulation?
2 Answers
When the car circulation light is on, it indicates internal circulation. The method to use the car's internal circulation is: press the internal circulation button inside the car. In the internal circulation state, the air exchange channels between the inside and outside of the car are closed. When the fan is off, the airflow inside the car does not circulate. When the fan is on, the air drawn in comes from inside the car, forming an internal airflow circulation. The purpose of the car's internal circulation is to block out polluted air, prevent external gases from entering the car, and ensure clean air inside the vehicle. The functional buttons inside the car include: 1. Headlight washer button: used to control the automatic headlight cleaning function; 2. Parking sensor button: pressing this button manually controls the parking sensors; 3. Central locking button: the control button for the car's central door locks.
I've been driving for over a decade, and when the recirculation light comes on, I know the interior circulation is activated. This means the AC stops drawing in outside air and only recirculates the air inside the car, which makes the warm air come faster in winter and the cooling more powerful in summer—especially useful during traffic jams or smoggy days. However, don't keep it on all the time; prolonged use can make the air stuffy and cause drowsiness. It's recommended to turn off the light and switch back to fresh air mode when the outside air quality is good. Typically, the button shows a car icon with a circular arrow symbol—when lit, it indicates the internal airflow is locked. Remember to check the cabin air filter regularly, as excessive dust can reduce efficiency. These small details can make your trips much more comfortable.
