What to Do If the Car Doesn't Have an External Circulation Button?
1 Answers
Generally, there is an air volume knob divided into left and right sides. Turning it to the left adjusts the internal circulation air volume, while turning it to the right adjusts the external circulation air volume. The internal circulation has a button, marked with a curved arrow surrounded by a car. When the internal circulation is turned on, this indicator light will illuminate. Pressing it again will turn off the light, switching to external circulation mode.