Jeep 2012 Grand Cherokee - Owner Manual - Manual (Page 320)

metallic objects) until the CAL indicator displayed in the
EVIC turns off. The compass will now function normally.
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.
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.
1. Turn the ignition switch ON.
2. Press the UP or DOWN button until the Setup
(Customer-Programmable Features) menu is reached,
then press the SELECT button.
Compass Variance Map
318 UNDERSTANDING YOUR INSTRUMENT PANEL