Inner Rear View Mirror: Calibration

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

SELECT COMPASS DISPLAY MODE
1. The compass switch allows you to select the Display or Non-display mode of the compass.
SET ZONE
1. Deviation between the "magnetic north" and "actual north" differs depending on the location. Therefore, adjustment of the magnetism is required. As the magnetic condition differs depending on the area where the vehicle is used, it is necessary for each user to set the zone (refer to Compass Zone Map). The zone setting can be changed using the compass switch of the inner mirror.
PERFORM CALIBRATION
1. As each vehicle has its own magnetic field, calibration should be performed for each individual vehicle. This compass function is used when storing the record of the vehicle's magnetic field.
WHEN COMPASS IS MAGNETIZED
1. A compass could be magnetized during shipping by vessels or freight cars. Therefore, make sure to perform calibration and ensure that calibration is performed properly before delivery. If this cannot be done (cannot be completed in spite of driving around several times), it may be caused by magnetization. Demagnetize the vehicle using a demagnetizer and perform calibration again.
ZONE SETTING MODE

Fig 2: Identifying Compass Display
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Pressing the compass switch for 3 seconds in the normal mode will activate the zone setting mode. A number (1 -15) is displayed on the compass display.
  HINT:
  
  In the initial state, "8" is displayed.
2. The displayed number increases +1 every time the compass switch is pressed. Referring to the map, check the number for the area where the vehicle will be used and set the zone number.
3. Leave it untouched for several seconds after setting and check that the compass display shows an azimuthal direction (N, NE, E, SE, S, SW, W or NW) or "CAL".
CALIBRATION SETTING MODE
1. Pressing the compass switch for 6 seconds in the normal mode will activate the calibration setting mode. "CAL" is displayed on the compass display.
2. Drive the vehicle at a slow speed of 8 km/h (5 mph) or less in a circular direction.
3. Driving in a circle 1 to 3 times will display the azimuthal direction on the display, completing the calibration.
  HINT:
  
  After the calibration is completed, it is not necessary to perform the above procedures unless the magnetic field strength is drastically changed. If this happens, the azimuthal display will be changed to "CAL".
4. The zone setting numbers are as follows:
  
  Fig 4: Identifying Compass Zone Map
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002