Toyota 2014 Sienna Manual page 635

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 according
to the geographic position of the vehicle.
If you cross over a map boundary shown in illustration, the compass will
deviate.
To obtain higher precision or perfect calibration, refer to the following.
SIENNA_OM_OM45483U_(U)
3-8. Other interior features
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