Jeep Grand Cherokee (2011)

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    Notes On Playing MP3 Files
    The radio can play MP3 files; however, acceptable MP3 file recording media and formats are limited. When writing MP3 files, pay attention to the following restrictions. ...

    Power Switch/Volume Control (Rotary)
    Push the ON/VOLUME control knob to turn on the radio. Push the ON/VOLUME control knob a second time to turn off the radio. ...

    After Starting
    The idle speed is controlled automatically and it will decrease as the engine warms up. ...