How to Turn on the Air Conditioner's External Circulation?

[LeGianna]

There are several main steps to turn on the air conditioner's external circulation, which are: 1. Locate the button with a car symbol in the air conditioning control area. 2. The button with an arrow entering the car from outside is the one to activate external circulation. 3. Press this button to turn on the external circulation. Some cars do not have an external circulation button but only an internal circulation button. Typically, when the light on the internal circulation button is on, it indicates internal circulation; pressing it again to turn off the light switches to external circulation. Below is some additional information about internal and external circulation: Internal circulation keeps the original air inside the car circulating, isolating it from the outside air. Turning on internal circulation helps maintain warmth, and in summer, it cools the car faster. However, if you keep the windows closed and use internal circulation for a long time, the car will quickly fill with moisture from human respiration, and the oxygen level will decrease.