Compass; Compass Calibration - Cadillac 2010 STS Owner's Manual

Compass

Compass Operation
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Press to turn the compass on or off.
When the ignition and the compass feature are on,
the mirror displays the compass heading after a
few seconds.

Compass Calibration

If after few seconds, the display does not show a
compass heading (for example, N for North), there may
be a strong magnetic field interfering with the compass.
Interference can be caused by a magnetic antenna
mount, magnetic note pad holder or a similar magnetic
item. If the letter C should ever appear in the compass
window, the compass may need calibration.
The mirror can be calibrated by driving the vehicle in
circles at 5 mph (8 km/h) or less until the display reads a
direction.
The compass can be placed in calibration mode
manually by pressing and holding
in the compass display.
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until a C is shown
Compass Variance
The mirror is set to zone eight. If you do not live in zone
eight or drive out of the area, the compass variance
needs to be changed to the appropriate zone.
To adjust for compass variance:
1. Find the current location and variance zone
number on the following zone map.
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2. Press and hold until a zone number displays.