Ford 1999 Crown Victoria Owner's Manual page 77

Controls and features
Compass zone adjustment
1. Determine which compass zone
you are in by referring to the zone
map.
1
15
2
14
3
13
4
12
11
5
6
10
8 9
7
2. With the compass display turned
on, press and hold the COMP side of
NW
the control until the zone selection
number appears in the mirror
COMP MIRROR
display window.
3. Release the COMP side of the
control, then press it down again.
4. Continue to press until your zone
number is shown in the mirror
display, then release.
5. The display will show all segments, then return to normal compass
mode within ten seconds.
Compass calibration adjustment
Perform this adjustment in an open area free from steel structures and
high voltage lines.
1. Start the vehicle.
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