Oldsmobile 2001 Intrigue - Manual (Page 116)

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To adjust for compass variance do the following:
1. Find your current location and variance zone number
on the following zone map.
2. Make sure the compass is in calibration mode.
See “Compass Calibration” in the Index.
Press the on/off button to display the zone number.
3. Scroll through the zone numbers that appear in
the compass window of the mirror. Once you find
your zone number in the window, release the on/off
button. After about four seconds, the mirror will
return to the compass display, and the new zone
number will be set. (Compass calibration may be
necessary. See “Compass Calibration” in the Index).