One problem related to battery cable has been reported for the 2011 Jeep Wrangler. The most recently reported issues are listed below.
Driving along about 75mph on I-26. All of a sudden all the lights inside flashed and then when dark. Jeep shut down and went dead. Coasted to shoulder. Shut off ignition and remove the key. Inserted key and started Jeep. About 2 hours later, I pulled over at a rest area, shut of the Jeep, and went to use the rest room. When I returned the Jeep would not respond to the fob to unlock the doors, I used the key in the manual lock. Jeep would not start. I disconnected the negative battery cable for about 10 seconds, and re installed. Jeep started and even 2 days later no return of symptoms.