See also:

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. ...

RW/FF
Press and hold FF (Fast Forward) and the CD player will begin to fast forward until FF is released or RW or another CD button is pressed. The RW (Reverse) button works in a similar manner. ...

More than 45 Safety and Security Features
The all-new 2011 Jeep Grand Cherokee includes more than 45 safety and security features. Standard safety features include Electronic Stability Control (ESC), Electronic Roll Mitigation (ERM), fo ...