2003 Lexus GS 300 Owners Manual - Page 106

COMFORT ADJUSTMENT Pushing the 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 ignition 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. The compass works to calibrate the direction automatically while the vehicle in in motion, if deviation is small. For obtaining additional precision or for complete calibrating, see "CALIBRATING THE COMPASS" below. 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 button for longer than about 6 seconds until the 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. 85