1994 Oldsmobile 88 Owner's Manual - Page 78

Features & Controls To calibrate the compass: 1. Set the switch on the mirror control to C/M. 2. Turn vehicle ignition switchOn. The letter C should be displayed in the mirror compass window. If not, hold the CaI switch (bottom of the mirror) for more than ten seconds, and the letter C will appear. To hold in the Cal switch, insert a paper clip into the small holeon the bottom of the mirror housing. The display will show a number first, but keep holding until the letter C appears. 3. Quick Calibration: Drive the vehicle in a 360-degree circle at less than 5 mph (8 ltm/h) until the display reads a compass direction.Normal Calibration: Drive the vehicle on your everyday routine, and the compass will eventuallv .. hate. ~~ Elecfrochromic DayINight Rearview Mirrorwith Compass (OPTION) This mirror automatically changes to reduce glare when set in the M or C/M positions. One photocell on the back of the mirror senses when it is becoming dark outside. Another photocell is built into the mirror surface to sense headlights behind you. The mirror will darken gradually to reduce glare. This change may take a few moments. The mirror goes to a clear position whenever you shift to R (Reverse). OFF: Shuts off the Day/Night function and compass. The mirror will stay in the Day setting. To keep the photocells operating well, occasionally cleanthem with a cotton swab and glass cleaner. C/M: This setting turns thecompass on, in addition to the Day/Night function. Once the compass is calibrated, it does not need to be recalibrated as long as the mirror is left in your vehicle. If a compass mirror is ever removed from a vehicle and placed onto another vehicle, it should be recalibrated again to the new vehicle. There could be errors in compass readings if not recalibrated. 76