Lexus RX400h2006 Owner's Manual page 287

STEERING WHEEL AND MIRRORS
" Compass sensor
NOTICE
Do not put magnets or a metal object on or near the
inside rear view mirror of the vehicle. Doing this may
cause malfunction of the compass sensor in the mirror.
260
Calibrating the compass (deviation calibration)
The direction display on the compass deviates from the true
direction determined by the earth's magnetic field. The angle
of deviation varies according to the geographic position of the
vehicle.
To adjust this deviation, stop the vehicle, then push and hold
the "COMP" switch until the zone number appears on the
display. Then push the "COMP" switch, referring to the
following map to select the number of the zone where the
vehicle is.