2006 Pontiac Torrent Owner's Manual - Page 98

Compass Variance Press the on/off button twice to turn on the compass. Compass variance is the difference between earth's magnetic north and true geographic north. If not adjusted to account for compass variance, the mirror's compass could give false readings. The mirror is set in zone eight upon leaving the factory. It will be necessary to adjust the compass to compensate for compass variance if you live outside of zone eight. Under certain circumstances, as during a long distance cross-country trip, it will also be necessary to adjust for compass variance. To adjust for compass variance do the following: 1. Find your current location and variance zone number on the following zone map. 2. Press the on/off button approximately seven seconds until the word ZONE appears in the display. The compass is now in zone mode. 3. Press and release the on/off button until the desired zone number appears in the display. After approximately four seconds of inactivity, the new zone number will be locked in and the compass/temperature display will return. 4. Calibrate the compass as described below. 2-28