How to use the air recirculation in BMW X3?

[OBentley]

BMW X3 has two buttons for controlling the external and internal air circulation, marked with the letters A and M. A stands for automatic switching between external and internal air circulation (meaning the vehicle detects and controls the air circulation automatically), while M is for forced internal air circulation. If no light is on, it indicates external air circulation. More information about BMW X3 is as follows: 1. The BMW X3 is positioned as a mid-size SUV. In terms of body dimensions, the length, width, and height are 4717/1891/1689mm, respectively, with a wheelbase of 2864mm. 2. In terms of power, the entire lineup is equipped with a 2.0T inline 4-cylinder turbocharged engine, available in high, medium, and low power calibrations, all paired with an 8-speed automatic transmission. 3. The BMW X3 features a MacPherson strut front suspension and a multi-link independent rear suspension.