Lincoln 1997 Continental Owner's Manual page 106

102
2. Insert an appropriate diameter rod (paper clip)
into the right switch access hole underneath
the compass module and gently press the right
button for 1-2 seconds until "ZONE" and the
current zone setting appear in the display.
3. Release the right button.
4. Pressing the right button repeatedly will cycle
through all possible zone settings. Stop cycling
when the correct zone setting for your location
appears.
5. Releasing the button for 2 seconds will exit the
zone entry mode.