2008 Chrysler PT Cruiser Owner Manual - Page 240

238 UNDERSTANDING YOUR INSTRUMENT PANEL Automatic Compass Calibration The compass on your vehicle is self-calibrating, eliminating the need to manually calibrate the compass. When the vehicle is new, the compass may appear erratic and the CAL indicator message will flash in the EVIC until the calibration is complete. A good calibration requires a level surface and an environment free from large metallic objects such as buildings, bridges, underground cables, railroad tracks, etc. Calibrate the compass by driving slowly, under 5 mph (8 km/h) in one or more complete circles in a area free from large metallic objects, until the CAL indicator in the EVIC turns off. The compass will now function normally. NOTE: Keep all magnetic objects, such as laptop computers, cell phones and PDAs (anything with a battery) away from the compass sensor which is located in the top of the instrument panel. These devices can interfere with compass accuracy and performance. Manual Compass Calibration If the compass appears to be inaccurate, you may wish to manually calibrate the compass. Prior to calibrating the compass, make sure the proper compass variance value (zone) is selected (refer to the above "Compass Variance" for additional information. Then continue to calibrate the compass as follows: 1. Start the engine, and leave the transmission in the PARK position. 2. Press and hold (approximately 10 seconds) the Compass/Temperature reset button until the current variance zone number is displayed. 3. Release the reset button, then press and hold again (approximately 10 seconds), until the direction is displayed with the "CAL" indicator on continuously in the display.