Jeep 2010 Commander Owner's Manual page 180

180 UNDERSTANDING YOUR INSTRUMENT PANEL
5. Complete one or more 360–degree turns (in an area
free from large metal or metallic objects) until the "CAL"
indicator turns off. The compass will now function
normally.
Compass Variance
Compass Variance is the difference between Magnetic
North and Geographic North. To compensate for the
differences, the variance should be set for the zone where
the vehicle is driven, per the zone map. Once properly
set, the compass will automatically compensate for the
differences, and provide the most accurate compass
heading. For the most accurate compass performance, the
compass must be set using the following steps.
NOTE: Magnetic materials should be kept away from
the overhead console or center of the headliner. This is
where the compass sensor is located.
Compass Variance Map
1. Turn the ignition switch ON.
2. Press the MENU button until Personal Settings
(Customer-Programmable Features) menu is reached.
3. Press the SCROLL button until "Compass Variance" is
displayed in the EVIC.