Dodge 2010 Charger Owner's Manual page 197

196 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"
message 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 head-
ing.
NOTE: Keep magnetic materials away from the top of
the instrument panel, such as iPod's, Cell Phones, Lap-
tops and Radar Detectors. This is where the compass
module is located, and it can cause interference with the
compass sensor, and it may give false readings.
Compass Variance Map
1. Turn the ignition switch ON.
2. Press and hold the HOME button for approximately
two seconds.