Cadillac 1998 DeVille - Compass Variance

Compass Variance
The mirror is set in zone eight upon leaving the factory.
It will be necessary to adjust the compass to compensate
for compass variance if
you live outside zone eight.
Under certain circumstances,
as during a long distance
cross-country trip, it will be necessary to adjust for
compass variance. Compass variance
is the difference
between earth’s magnetic north and true geographic
north.
If not adjusted to account for compass variance,
your compass could give
false readings.
To adjust for compass variance:
1. Use the COMPASS button located at the bottom of
the mirror.
2. Press and hold the COMPASS button until a zone
number appears in the display.
on the following zone map.
3. Find your current location and variance zone number
4. Press the COMPASS button on the bottom of the
mirror until the new zone number appears
in the
display. After you stop pressing the button,
the display
will show a
“C” in the direction display within a
few seconds.
(This is the automatic calibration
mode
-- you’ll need to drive in a circle to calibrate the
mirror. See “Compass Calibration” following.)
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