1995 Oldsmobile 88 Owner's Manual - Page 93

Once the compass is calibrated, it does not need tobe recalibrated for any zone as long asthe mirror is left in your vehicle and the vehicle remains in the same geographical zone. 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 in the calibration switchfor more than 10 seconds, andthe letter C will appear.To hold in the calibration switch, insert a paper clip into the small hole on the bottom of the mirror housing. The display will show a number but keep holding first, until the letterC appears. 3. Quick Calibration: Drive the vehicle in a 360-degree circle at less than 5 mph (8 M) until the display reads a compass direction. Normal Calibration: Drive the vehicle on your everyday routine, and the compass will eventually calibrate. Compass variance is the difference between magnetic north and geographic north. In some areas the difference between the twocan be great enough to cause false compass readings. If this happens, follow these instructions to set the variance your particular for location: 1. Locate your location on the zone map. Note your zone number. 2-41