2007 Dodge Durango Owner's Manual - Page 197

INSTRUMENT PANEL AND CONTROLS 197 FM Reception Because FM transmission is based on frequency variations, interference that consists of amplitude variations can be filtered out, leaving the reception relatively clear, which is the major feature of FM radio. NOTE: The radio, steering wheel radio controls (if equipped), and 6 disc CD/DVD changer (if equipped) will remain active for up to 10 minutes after the ignition switch has been turned off. Opening a vehicle front door will cancel this feature. SALES CODE REF - AM/FM/CD (SINGLE DISC) RADIO WITH OPTIONAL SATELLITE RADIO AND HANDS FREE PHONE CAPABILITY NOTE: The radio sales code is located on the lower right side of your radio faceplate. REF Radio 4 Operating Instructions - Radio Mode NOTE: The ignition switch must be in the ON or ACC position to operate the radio.