2008 Jeep Patriot Owner's Manual - Page 195

UNDERSTANDING YOUR INSTRUMENT PANEL 193 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 Calibrate Compass (Yes) 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. Electrical Disturbances Radio waves may pick up electrical disturbances during transmission. They mainly affect the wave amplitude, and thus remain a part of the AM reception. They interfere very little with the frequency variations that carry the FM signal. 4