FORD 1999 Taurus - Manual (Page 45)

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Factors Affecting Compass Accuracy
Magnetic mounted devices (antennas, racks, etc.)
should not be located on the front third of the
vehicle roof. Placement of these devices near the
compass will cause the compass to be inaccurate. If
these devices are used, for improved accuracy,
recalibrate the compass with the device(s) installed.
Driving near power lines or large iron or steel
structures can temporarily change the compass
heading. Demagnetize the vehicle and recalibrate
the compass if it remains inaccurate after driving
near such objects.
Compass Adjustments
Press and hold the COMPASS control, then press
the RESET control. Next, release both controls. The
display will show the “Compass Menu” (Figure 1).
The letters on the left side of the arrows indicate
the control to press to perform the adjustment
indicated on the right side of the arrows, as shown
in Figure 1.
Figure 1 — Compass Menu Mode
To abort this “compass menu” or any compass
variation adjustment menu, press any control other
than RESET or FUEL ECONOMY.
Variation Adjustment
The variation adjustment is only needed if you
travel outside your current zone (see Fig. 2). The
following describes the method available for setting
the variation adjustment:
File:03fnis8.ex
Update:Thu Jun 27 10:00:37 1996