2010 Jeep Wrangler Owner's Manual - Page 265

264 UNDERSTANDING YOUR INSTRUMENT PANEL WARNING! Even if the display still reads a few degrees above 32°F ( 0°C), the road surface may be icy, particularly in woods or on bridges. Drive carefully under such conditions to prevent an accident and possible personal injury or property damage. Compass Calibration The compass on your vehicle will automatically calibrate when new, and will continuously adjust itself over the life of the vehicle. If the CAL indicator is on (or flashing), drive slowly (under 10 mph [16 kmh]) in an open area until the CAL indicator is off. • Magnetic and battery powered devices, (such as cell phones, iPod's, radar detectors, PDA's and laptops) should be kept away from the top of the instrument panel. This is where the compass module is located and such devices may interfere and cause false compass readings. 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 (blinking) on the display. After the vehicle has completed at least one complete circle under 5 mph (8 km/h) in an area free from large metal objects, calibration will be complete when the CAL symbol is extinguished. NOTE: • A good calibration requires a level surface and an After initial calibration, the compass will continue to environment free from large metallic objects such as automatically update this calibration whenever the vebuildings, bridges, underground cables, railroad hicle is in motion. tracks, etc.