Toyota 4runner 2010 Instruction Manual page 447

Calibrating the compass
Samoa: 5 Guam: 8 Saipan: 8
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 calibra-
tion".
3-7. Other interior features
CTH37AS072
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