1998 Cadillac DeVille Owner's Manual - Page 121
1998 Cadillac DeVille Manual
Page 121 highlights
Mirror Operation Compass Operation Press the COMPASS switch once to turn the compass on or off. -I 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 compass heading. The right side the switch located the bottom of the of at mirror turns the electrochromic mirror and off. To on turn on the automatic dimming feature, press MIRROR. To turn off automatic dimming, press MIRROR again. The green indicator light will illuminated when this be feature is active. 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 or magnetic antenna mount, magnetic note pad holdera similar magnetic item. 2-50