Dodge 2011 Ram 1500 - Manual (Page 238)

NOTE: A good calibration requires a level surface and
an environment free from large metallic objects such as
buildings, bridges, underground cables, railroad tracks,
etc.
Manual Compass Calibration
If the compass appears erratic and the CAL indicator
does not appear in the EVIC display, you must put the
compass into the Calibration Mode manually, as follows:
1. Turn ON the ignition switch.
2. Press the UP or DOWN button until the System Setup
(Customer-Programmable Features) menu is reached,
then press the SELECT button.
3. Press the DOWN button until “Calibrate Compass” is
displayed in the EVIC.
4. Press and release the SELECT button to start the
calibration. The “CAL” indicator will be displayed in the
EVIC.
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: Keep magnetic materials away from the top of
the instrument panel, such as iPod’s, Mobile Phones,
Laptops 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.
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UNDERSTANDING YOUR INSTRUMENT PANEL 237