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Do not attempt to set the compass near large metal objects, such as other vehicles, Large buildings, or bridges.
Park the vehicle on a flat surface, facing any direction. Close the doors and start the engine.
Make sure the lamps in the overhead console are turned off and the vehicle doors are closed during calibration!!!
Insert a paper clip, jewelers screwdriver, or similar
object into the calibration switch(driver's side hole) and push once.
The display will change to "C1". When the display reads "C2" turn
the vehicle the opposite direction and push the calibration switch again.
The display will stop blinking and read a constant "C2". Within 5
seconds, the display will indicate the outside temperature and the direction
the vehicle is facing.
Setting the Variance
Setting the variance you ask. Variation is the difference between magnetic north and geographic north. In some area's the distance between the two is great enough to give false readings and if this happens the variance must be set.
To set the variance park the vehicle facing geographic
north. Close the doors and start the engine. Insert a paper
clip, jewelers screwdriver, or similar object into the variance switch(passanger
side hole) and push once. The display should read "NT". Hold
the vehicle at this setting until the display returns to normal.
The variance is now set.
Do not attach magnetic devices such as magnetic CB antennas to the roof as they can cause the compass to give false readings