2010 Toyota 4Runner Owners Manual - Page 473

3-7. Other interior features Calibrating the compass 3 Samoa: 5 Guam: 8 Saipan: 8 CTH37AS072 Interior features The direction display deviates from the true direction determined by the earth's magnetic field. The amount of deviation varies depending on the geographic position of the vehicle. If you cross over one of the map boundaries shown in illustration, the compass will deviate. To obtain higher precision or perfect calibration, refer to "Deviation calibration". 451