2008 Ford F150 Owner Guide 1st Printing - Page 124

Driver Controls 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 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. Refer to Compass zone adjustment. Compass zone adjustment 1. Determine which magnetic zone you are in for your geographic location by referring to the zone 3 2 1 15 map. 4 14 2. Turn ignition to the ON position. 13 3. Start the engine. 5 12 6 7 8 9 1011 4. Press the ODO reset button in the cluster, hold for six seconds and release. You will see that ZONE appears in the instrument cluster display. 5. Press and release the button until the desired zone number appears. Note: The range of zone values are from 01 to 15 and "wraps" back to 01. 6. When you get to the desired ZONE number, hold the button down to "lock in" the new value. The cluster display will return to the "normal" mode when the button has not been pressed for 6 seconds. Compass calibration adjustment Perform this adjustment 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. 124 2008 F-150 (f12) Owners Guide (post-2002-fmt) USA (fus)