Ford 1999 Windstar Owner's Manual page 22

Instrumentation
Compass zone/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. Turn ignition to the ON position.
2. Start the engine.
3. Determine your magnetic zone by
referring to the zone map.
4. From Info menu, select the
1
Compass/Outside Temperature
function.
15
2
14
3
13
4
12
11
5
6
10
8 9
7
5. Press and hold the RESET
control until the message center
display changes to show the current
zone setting.
6. Release the reset control, then
slowly press down again.
7. Press the SETUP control
repeatedly until the correct zone
setting for your geographic location
is displayed on the message center. To exit the zone setting mode press
and release the RESET control.
8. Press the RESET control to start
the compass calibration function.
22