Ford Repair: compass calibration 2002 explorer, compass sensor, compass module

Question
how do I calibrate the digital compass on my 2002 explorer?  it always shows "n" no matter what direction I go.

Answer
This is from the Owners Manual.

Compass zone adjustment

1. Determine which magnetic zone you are in for your geographic location by referring to the zone map.
2. Turn ignition to the ON position.
3. Locate compass sensor mounted at base of mirror.
4. Insert a paperclip into the small hole on the bottom of the compass sensor or press the button on the top of the compass module until ZONE appears in the instrument cluster display.
5. Release pressure on the paperclip or button and then slowly press it down again.
6. Continue to press until ZONE appears in the instrument cluster display, then release. The display should show the current zone number.
7. Press until the desired zone number appears. The display will flash and then return to normal operation. The zone is now updated.

Compass calibration adjustment

Perform this adjustment in an open area free from steel structures and high voltage lines:
For optimum calibration, turn off all electrical accessories (heater/air conditioning, wipers, etc.) and make sure all vehicle doors are shut.
1. Start the vehicle.
2. Locate compass sensor mounted at base of mirror.
3. Insert a paperclip into the small hole on the bottom of the compass sensor or press the button on the top of the compass module until ZONE appears in the instrument cluster display. Continue to hold down until ZONE disappears and CAL is displayed (approximately eight seconds) and release.
4. Drive the vehicle slowly (less than 5 km/h [3 mph]) in circles until CAL indicator turns off (4–5 complete circles).
5. The compass is now calibrated.

I hope this helps,
Dave