If, after two seconds, the display does not show a
compass heading
(“N’
for North, for example), there
may be a strong magnetic field interfering with the
compass. Such interference may be caused by a
magnetic antenna mount, magnetic note pad holder
or a similar magnetic item.
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 compass will need to be calibrated.
(This is the automatic calibration mode. Drive in
a circle to calibrate the mirror. See “Compass
Calibration” following.)
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