Compass Calibration and Magnetic Variance (Driver Information Center (DIC)): Notes
Under certain circumstances the compass may have to be calibrated especially if the vehicle is driven over a long distance trip. Reset the zone through the DIC if the compass zone is not set correctly. If the compass heading is blank or the driver information center (DIC) shows CAL or C, the compass must be re-calibrated.
Compass variance is the difference between the earth's magnetic north and the true geographic north. If the compass is not set in the zone where you live, the compass may give false readings. The compass must be set to the variance zone in which the vehicle is travelling.