Buick 2006 Rainier - Manual (Page 101)

To adjust for compass variance do the following:
1. Find the current location and variance zone number
on the following zone map.
2. Press and hold the on/off button until a zone
number appears in the display.
3. Once a zone number appears in the display, press
the on/off button quickly until the correct zone
number appears in the display. If C appears in
the compass window, the compass may need
calibration. See “Compass Calibration”
explained previously.
Automatic Dimming Rearview Mirror
with OnStar
® and Compass
Your vehicle may have an automatic-dimming rearview
mirror with a compass and the OnStar
® system.
There are three additional buttons for the OnStar ®
system. See your dealer for more information on the
system and how to subscribe to OnStar
® . See OnStar ®
System on page 2-41 for more information about the
services OnStar
® provides.
Mirror Operation
When turned on, this mirror automatically dims to the
proper level to minimize glare from any headlamps
behind you after dark.
O (On/Off): This is the on/off button for the
automatic dimming feature and compass. Press the
far left button, located below the mirror face, for up to
three seconds to turn the feature on and off. A light
on the mirror will be lit while the feature is turned on.
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