Digital compass*

The rear-view mirror has an integrated display that shows the compass direction in which the vehicle is traveling.

Operation

P3-820 Rearview mirror with integrated compass display
Rearview mirror with compass.

Eight different directions are shown with the abbreviations: N (north), NE (north east), E (east), SE (southeast), S (south), SW (southwest), W (west) and NW (northwest).

The compass is displayed automatically when the vehicle is started or in ignition mode II. To switch the compass on/off use a pen, paperclip or similar object and press in the button on the rear side of the mirror.

Calibration

North America is divided into 15 magnetic zones and the compass will need to be calibrated if the vehicle is driven into a new one (see the magnetic zones on the map in the following section "Selecting a magnetic zone"). To do so:

Stop the vehicle in a large open area, safely out of traffic and away from steel structures and high-tension electrical wires.
Start the vehicle.

 Note

  • For best calibration results, switch off all electrical equipment in the vehicle (climate system, windshield wipers, audio system, etc.) and make sure that all doors are closed.
  • Calibration may not succeed or be incorrect if the vehicle's electrical equipment is not switched off.

Using a pen, paperclip or similar object, press and hold the button on the rear side of mirror for approx. 6 seconds until C is displayed in the mirror.

Press and hold the button for 3 seconds until the number of the current magnetic zone is displayed.
Press the button repeatedly until the number of the desired magnetic zone (1-15) is displayed. See the magnetic zones on the map in the following section "Selecting a magnetic zone").
Wait until C is again displayed in the mirror.
Drive slowly in a circle at a speed of no more than 6 mph (10 km/h) until a direction is displayed. This indicates that calibration is complete.
Drive around in a circle an additional two times to fine-tune the calibration.
Vehicles with an electrically heated windshield:* if C is displayed when the heating function is activated, perform step 7 with the heating function on. See also Max. defroster and electrically heated windshield* for additional information about the heated windshield.

Repeat the calibration procedure if necessary.

Selecting a magnetic zone

S80 USA map
Magnetic zones.

The earth is divided into 15 magnetic zones. The correct zone must be selected for the compass to work correctly.

Put the ignition in mode II.
Using a pen or similar object, press and hold the button on the rear side of mirror for at least 3 seconds. The number for the current area will be shown.
Press the button repeatedly until the number for the required geographic area (1 – 15) is shown.
The display will revert to showing the compass direction after several seconds.
  1. * Option/accessory.