2003 Cadillac Seville Owner's Manual - Page 97

Mirror Operation (I> (On/Off): The on/off button is located on the lower left side of the mirror face for the electrochromic and compass functions of the rearview mirror. To turn on the automatic dimming feature,press and hold the on/off button for about three seconds. To turn off automatic dimming, press and hold the on/off button for about three seconds again. The indicator light will illuminate when this feature is active. The automatic dimming feature is active each time the vehicle is started. The mirror can be calibrated by driving the vehicle in circles at 5 mph (8 km/h) or less until the display readsa direction. The compass can be placed in calibration mode manually by pressing and holding the on/off button until a C is shown in the compass display. Compass Variance The zone is set to zone eight upon leaving the factory. It will be necessary to adjust the compass to compensate for compass variance if you live outside zone eight. Under certain circumstances, as during a long distance cross-country trip, it will be necessary to adjust for compass variance. Compass varianceis the difference between earth's magnetic north and true geographic north. If not adjusted to account for compass variance, your compass could give false readings. 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. 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 compass heading. Compass Calibration If after two seconds, the display does not show a compass heading (for example, N for North), there may be a strong magnetic field interfering with the compass. Such interference may be caused by a magnetic antenna mount, magnetic note pad holder or a similar magnetic item. If the letter C should ever appear in the compass window, the compass may need calibration. 2-36