How do I turn on/off the aircon for the BMW X3 2nd Gen?

To turn on the aircon: 

1. Locate the aircon control panel as shown in the image below.

2. Press the A/C button.
3. Press the AUTO button to let the car automatically adjust your temperature.
4. Press the Fan button to adjust the fan speed. 

To turn off the aircon: 

Press the OFF button.