To ensure an accurate compass reading, it is necessary to perform a magnetic variation (declination) adjustment in order to set the number that identifies the region that the vehicle will be used in. The numbers that identify the regions are shown in the illustration below.
As the compass system needs to memorize the vehicle's marked magnetic field, it is necessary to perform calibration for each vehicle. Once calibration has been completed, it is not necessary to perform calibration unless a sudden magnetic field change occurs. In case of occurrence of a sudden magnetic field change, "C" will be displayed in the compass display and it will be necessary to perform calibration again.
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