[aussiblue]

For Climate Control with engine at normal operating temperature (coolant at at least 45 degrees C), ignition on, press "Mode" and "Off" button simultaneously. Well actually press the "Off" button a microsecond after holding down the "Mode" button so you don't simply turn it off. This will put it into diagnostic mode and it will take a minute or two to run through the diagnostics will all display segments lit. It will then either show any fault codes if there are faults or switch to "Off" and reset the system. For the Trip Computer just press the "reset" button in each of the modes (e.g. Av Speed and Av Fuel Consumption) that you want reset.