2003 Cadillac CTS Owner's Manual - Page 129

Electrochromic Day/Night Rearview Mirror with Compass and OnStarR System (If Equipped) Your vehicle may have an electrochromic inside rearview mirror with a compass. The mirror also contains OnStar controls. For more information about OnStar, see "OnStar" in the Index. The mirror has an eight-point compass display in the upper right corner of the mirror face. When on, the compass automatically calibrates as the vehicle is driven. (On/Off): This is the on/off button, located on the lower left side of the mirror for the electrochromic functions of the rearview mirror. Mirror Operation The electrochromic feature on the mirror functions exactly the same as the base electrochromic mirror. See "Electrochromic Day/Night Rearview Mirror with OnStarR System" listed previously in this section for more information. Compass Operation Press the on/off button once to turn the compass on or off. When the ignition and the compass feature are on, the compass will show two character boxes for approximately two seconds. After two seconds, the mirror will display the current compass heading. Compass Calibration 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, note pad holder or similar object. 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 by pressing and holding the on/off button until a C is shown in the compass display. 2-61