Hummer 2007 H3 - Manual (Page 122)

Mirrors
Automatic Dimming Rearview Mirror
with OnStar
® , Compass and
Temperature Display
Your vehicle may have this feature. When on, the
automatic dimming mirror dims to the proper level
to minimize glare from lights behind you after dark.
The mirror has a dual display in the upper right
corner of the mirror face that shows the compass
reading and the outside temperature.
Control buttons for the OnStar ® system are at the
bottom of the mirror. See OnStar ® System on
page 129 for more information about the services
OnStar
® provides.
P (On/Off): This is the on/off button.
Temperature and Compass Display
Press the on/off button, located to the far
left, briefly to turn the compass/temperature
display on or off.
If the display reads CAL, the compass needs to
be calibrated. For more information, see “Compass
Calibration” following.
To adjust between Fahrenheit and Celsius, do the
following:
1. Press and hold the on/off button for
approximately four seconds until either a
flashing F or C appears.
2. Press the button again to change the display
to the desired unit of measurement. After
approximately four seconds of inactivity, the
new unit will be locked in and the
compass/temperature display will return.
If an abnormal temperature reading is displayed
for an extended period of time, see your
dealer. Under certain circumstances, a delay in
updating the temperature is normal.
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