Automatic Compass Calibration; Manual Compass Calibration - Chrysler 2004 300M User Manual

104 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Automatic Compass Calibration

The self calibrating feature of the compass eliminates the
need to calibrate the compass for normal conditions.
During a short initial period, the compass may appear
erratic and the CAL symbol will appear on the display.
The CAL symbol may also appear after the vehicle is
subjected to a high level of magnetism. After completing
three 360 turns at about 5 mph (8 km/h) in an area free
from large metal or metallic objects, the CAL symbol will
turn off and the compass will function normally.

Manual Compass Calibration

If the compass appears erratic and the CAL light does not
appear, you must calibrate the compass. Find an open
area away from large metal objects. With the ignition ON
and the compass/temperature displayed, press and hold
the RESET button until the CAL symbol appears (about
10 seconds). Drive slowly (about 5 mph) (8 km/h) in 3
complete 360 circles. The CAL light will turn off and the
compass will be calibrated.
Variance is the difference between magnetic North and
geographic North. For proper compass function, the
correct variance zone must be set. Refer to the variance
map for the correct variance zone. To check the variance
zone, the ignition must be on and the compass/
temperature displayed. Press and hold the RESET button
for about 5 seconds until VAR appears in the display. The
number displayed is the variance zone used by the
compass. To change the zone, press the STEP button to
scroll through numbers 1 through 15. Press the RESET
button after selecting the proper zone to return to the
normal compass/temperature display.
NOTE: To ensure proper compass calibration, make
sure the compass variance is properly set before manu-
ally calibrating the compass (see variance map).