In another topic, a poster wrote:
"....In the Honda HRV there is a hidden settings menu which does include calibrating the guidelines. However there are many other settings there which would be best left alone…..! I assume the same will apply to the Jazz.
If you want to try this then from the ignition on position simultaneously press Home+Volume knob+seek backwards for about 30 seconds or so. Seek backwards is the left button below the volume knob. You will then see a screen with two choices..."
I will check to see if this hidden setting menu exists for the Jazz Mk4 (as released in New Zealand) and report back.