Grand Cherokee 2WD V8-5.7L VIN 2 (2005)
Compass: Service and Repair
Compass Calibration
CAUTION: Do not place any external magnets, such as magnetic roof mount antennas, in the vicinity of the compass. Do not use magnetic tools when
servicing the overhead console.
The electronic compass unit features a self-calibrating design, which simplifies the calibration procedure. This feature automatically updates the compass
calibration while the vehicle is being driven. This allows the compass unit to compensate for small changes in the residual magnetism that the vehicle
may acquire during normal use. If the compass readings appear to be erratic or the Electronic Vehicle Information Center (EVIC) displays "CAL",
perform the following calibration procedure. Also, any time EVIC service replacement components are installed, they must be calibrated using this
procedure. Do not attempt to calibrate the compass near large metal objects such as other vehicles, large buildings, or bridges; or, near overhead or
underground power lines.
Calibrate the compass manually as follows:
1. Turn the ignition switch to the On position.
2. Press and release the C/T button (1) so that the EVIC display is in the Compass/Temperature mode.
3. Depress and hold the C/T push button (1) for approximately ten seconds. The message "CAL" will appear in the EVIC display
4. Drive the vehicle on a level surface, away from large metal objects and power lines, through one or two complete circles in not less than 16
seconds. The "CAL" message will disappear from the display to indicate that the compass is now calibrated.
NOTE:
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A blank compass display indicates that vehicle degaussing (demagnetizing) is necessary.
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If the "CAL" message remains in the display, either there is excessive magnetism near the compass, or the unit is inoperative. Repeat the
calibration procedure at least one more time.
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If the wrong direction is still indicated in the compass display, the area selected for calibration may be too close to a strong magnetic field. Repeat
the calibration procedure in another location.
