2008 Dodge Challenger Owner Manual SRT8 - Page 172
2008 Dodge Challenger Manual
Page 172 highlights
170 UNDERSTANDING YOUR INSTRUMENT PANEL Compass Variance Compass Variance is the difference between magnetic North and geographic North. In some areas of the country, the difference between magnetic and geographic North is great enough to cause the compass to give false readings. If this occurs, the compass variance must be set using the following procedure: NOTE: Magnetic materials should be kept away from the overhead console. This is where the compass sensor is located. Compass Variance Map
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Compass Variance
Compass Variance is the difference between magnetic
North
and
geographic
North.
In
some
areas
of
the
country, the difference between magnetic and geographic
North is great enough to cause the compass to give false
readings. If this occurs, the compass variance must be set
using the following procedure:
NOTE:
Magnetic materials should be kept away from
the overhead console. This is where the compass sensor is
located.
Compass Variance Map
170
UNDERSTANDING YOUR INSTRUMENT PANEL