2003 Hummer H2 Owner's Manual - Page 135
2003 Hummer H2 Manual
Page 135 highlights
Mirrors Electrochromic Inside Rearview Mirror with Compass and Temperature Display When on, an electrochromic mirror automatically dims to the proper level to minimize glare from lights behind you after dark. Temperature and Compass Display Press the COMP or TEMP button, briefly to turn the comp/temp display on or off. If the display reads CAL, you will need to calibrate the compass. For more information on calibration, see below. To adjust between Fahrenheit and Celsius do the following: 1. Press and hold the TEMP button for 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. The mirror also includes a dual display in the upper right corner of the mirror face. The compass reading and the outside temperature will both appear in the display at the same time. 2-53
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