2008 Dodge Caliber Owner Manual - Page 187

UNDERSTANDING YOUR INSTRUMENT PANEL 185 Settings (Customer-Programmable Features)" menu, press and release (less than one second) the EVIC button several times until "Calibrate Compass (Yes)" is displayed. Using a long button press (more than one second), pressing the EVIC button will place the Compass in calibration mode. The CAL indicator will come on continuously in the EVIC display to indicate that the compass is now in the calibration mode and that the vehicle can now be driven to calibrate. A short EVIC button press from the ЉCalibrate Compass (Yes)Љ screen will exit the EVIC Customer-Programmable Features, and return it to its normal operating mode. To complete the compass calibration, drive the vehicle in one or more complete 360 degree circles under 5 mph (8 km/h) in an area free from power lines and large metallic objects, until the "CAL" indicator turns off. The compass will now function normally. RADIO GENERAL INFORMATION Radio Broadcast Signals The radio will provide excellent reception under most operating conditions. Like any system, however, automotive radios have performance limitations, due to mobile operation and natural phenomena, which might lead you to believe your sound system is malfunctioning. To help you understand and save you concern about these "apparent" malfunctions, you must understand a point or two about the transmission and reception of radio signals. Two Types of Signals There are two basic types of radio signals: AM or Amplitude Modulation, in which the transmitted sound causes the amplitude, or height, of the radio waves to vary; and FM or Frequency Modulation, in which the frequency of the wave is varied to carry the sound. 4