2009 Ford Explorer Sport Trac Owner Guide 2nd Printing (Spanish) - Page 488

Driver Controls Compass display (if equipped) The compass heading is displayed as one of N, NE, E, SE, S, SW, W and NW in the message center display. The compass reading may be affected when you drive near large buildings, bridges, power lines and powerful broadcast antenna. Magnetic or metallic objects placed in, on or near the vehicle may also affect compass accuracy. 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 adjustment. Most geographic areas (zones) have a magnetic north compass point that varies slightly from the northerly direction on maps. This variation is up to 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 calibration adjustment. Compass zone adjustment (if equipped) 1. Determine which magnetic zone you are in for your geographic location by referring to the zone 3 2 map. 4 2. Turn ignition to the on position. 5 1 15 14 13 12 6 7 8 9 1011 3. Locate the reset button on top of the compass sensor mounted behind the mirror. 91 2009 07+ Explorer Sport Trac (esp) Owners Guide, 2nd Printing USA (fus)