Hold the right button for three seconds. Zone should be displayed. Tap the right button until the desired zone is displyed. wait until it goes away.
For even more accuracy, you can calibrate it after selecting the zone. I'm not sure, but I think that is hold the left switch for 3 seconds and CAL is displayed. Drive in very slow circles (2-3) with as many electric/electronic accesories turned off in the middle of an empty flat parking lot until it returns to displaying the compas heading.
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