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Usually, when something affects the compass readings, the compass will
correct itself after a few days of operating your vehicle in normal
conditions. If the compass still appears to be inaccurate, a manual
calibration may be necessary. Refer to Compass zone/calibration
adjustment.
Most geographic areas (zones) have a magnetic north compass point that
varies slightly from the northerly direction on maps. This variation is four
degrees between adjacent zones and will become noticeable as the
vehicle crosses multiple zones. A correct zone setting will eliminate this
error. Do the following to set the proper zone:
Compass zone/calibration adjustment
1. Determine your magnetic zone by
referring to the zone map.
2. Turn ignition to the on position.
3. Start the engine.
4. From the SETUP menu, press and release the RESET button until the
message center display changes to show the current zone setting ZONE
<XX> RESET = CHANGE.
5. Press and release the RESET button repeatedly until the correct zone
setting for your geographic location is displayed on the message center.
The range of zone values are from 1 to 15 and “wraps” back to 1.
6. To exit the zone setting mode, and to “lock in” your change:
• press and release the SETUP button or,
• press INFO button to exit or,
• wait four seconds and the zone will be “locked in”.
Perform compass calibration in an open area free from steel structures
and high voltage lines. For optimum calibration, turn off all electrical
accessories (heater/air conditioning, wipers, etc.) and make sure all
vehicle doors are shut.
7. Press the RESET button until the display reads RESET FOR
CALIBRATION to start the compass calibration function.
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Instrument Cluster
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2010 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)