Lexus SC 430 2002 Manual page 75

GAUGES, METERS AND SERVICE REMINDER INDICATORS
CALIBRATING THE COMPASS
The direction display on the compass 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.
To adjust for this deviation, stop the vehicle and with the
ignition on, push the "ODO/TRIP" button together with the
"RESET" button for longer than 3 seconds until the number
(1−15) appears on the display. Then push the "RESET" button,
referring to the following map to select the number of the zone
13sa11
where the vehicle is.
"Zone number
57