Why does the unit not show A/C status info on the screen?

Answer: The Z-E3215 MkII can read and use the A/C related CAN signal presented in the vehicle. The A/C status info pop-up is disabled in the factory settings. BMW has not developed the automatic climate control with respect to a visual status indicator, thus there are too many A/C control commands to trigger the pop-up. This may also be a matter of preference and thus, this feature can be activated on demand in the system settings.