How to calibrate and self-test Ford Mondeo MK3 Climatronic (AC HVAC service hidden mode)

If you&having trouble with Climatronic system in your Ford Mondeo MK3, you can perform a calibration and self-test to read trouble codes that will help you with diagnosing the issue. This can fix air mixer flaps issues. Press both OFF and leg room vent buttons, then press AUTO button and self-test will start. After that press both OFF and leg room vent buttons, then press front vent button and DTCs will be displayed on the LCD. Press defrost button to clear current diagnostic trouble codes.