Jeep 2006 Grand Cherokee - Manual (Page 200)

NOTE: To ensure proper compass calibration, make
sure the compass variance is properly set before manu-
ally calibrating the compass. Refer to Variance Map.
To Put Into a Calibration Mode
Start the engine and leave the transmission in the P (Park)
position. Set the display to “Compass/Temperature.”
Press and hold the C/T button for approximately 5
seconds to change the display to compass variance mode;
holding the button for an additional 5 seconds will flash
the “CAL” symbol indicating compass calibration mode.
When the “CAL” indicator is flashing, complete one or
more 360 degree turns, under 5 mph (8 km/h), in an area
free from large metal objects or power lines. The “CAL”
indicator will turn off and the compass will function
normally.
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 according
to the Compass Variance Map.
Compass/Temperature Button
200 UNDERSTANDING YOUR INSTRUMENT PANEL