Calibrating The Compass (Deviation Calibration) - Lexus GS430 User Manual

Pushing the "AUTO" button for longer than 3 seconds
turns on or off the compass display.
The compass may not show the correct direction in the
following conditions:
D The vehicle is stopped immediately after turning.
The compass does not adjust while the vehicle is stopped.
D The engine switch is turned off immediately after turning.
D The vehicle is on an inclined surface.
D The vehicle is in a place where the earth's magnetic field is
subject to interference by artificial magnetic fields
(underground parking, under a steel tower, between
buildings, roof parking, near a crossing, near a large
vehicle, etc.).
D The vehicle is magnetized. (There is a magnet or a metal
object near the inside rear view mirror.)
D The battery has been disconnected.
D Any door is open.
If the deviation is small, the compass works to calibrate the
direction automatically while the vehicle is in motion.
For obtaining additional precision or for complete calibrating,
see "CALIBRATING THE COMPASS" below.
STEERING WHEEL AND MIRRORS
NOTICE
Do not put magnets or a metal object near the inside rear
view mirror. Doing this may cause malfunction of the
compass sensor.

CALIBRATING THE COMPASS (deviation calibration)

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 push the
"AUTO" button for longer than about 6 seconds until the zone
number (1−15) appears on the display. Then push the button
again, referring to the following map to select the number of the
zone where the vehicle is.
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