See also:

Operating Instructions - Radio Mode
NOTE: The ignition switch must be in the ON or ACC position to operate the radio. Power Switch/Volume Control (Rotary) Push the ON/VOLUME control knob to turn on the radio. Press the ON/VOLUME con ...

Extreme Cold Weather (Below –20°F Or –29°C)
To ensure reliable starting at these temperatures, use of an externally-powered electric engine block heater (available from your authorized dealer) is recommended. ...

Connectivity and Infotainment Features
The all-new 2011 Jeep Grand Cherokee will feature uconnect guardian as a standard feature on all models (services provided by Hughes Telematics). uconnect guardian provides customers with the top ...