Two problems related to transmission noise have been reported for the 2010 Jeep Wrangler. The most recently reported issues are listed below.
On April 16th, 2011 several of us decided to do a mild 4-wheel drive trip to a local waterfall. I was driving a 2010 Jeep Wrangler rubicon in 4x4 low on a dirt road. We reached our destination and the vehicle in front of us stopped and everyone got out and started to gather their stuff from the rear of their Jeep. I stopped roughly 10 ft behind the first vehicle on a slight incline (10% angle) downwards towards the first vehicle, put my Jeep (auto transmission) into park, and took out the key. We exited my Jeep and started walking towards the first Jeep as I approached my front tire, the Jeep started to move forward and it made a ratcheting noise from the transmission. The type of noise that is made when one would put a moving vehicle into park. My Jeep crashed into the tailgate of the first Jeep almost crushing my friend. Fortunately my Jeep hit the tailgate of the first Jeep at a 90 degree angle and the door withheld the force of my Jeep crashing into his Jeep. Took the Jeep to the dealership and they said they could not replicate the problem and they would not attempt to fix the Jeep. I drove the Jeep home and was able to replicate the problem in about 5 minutes, and was able to reproduce it consistently in another 45 minutes to an hour. . I created a video of the transmission failing and sent it to the Jeep dealership. I was able to replicate the failure by stopping on a hill with a pretty good angle and cycle through these actions: put foot on brake, put Jeep in drive, drive 2 inches, put foot on brake, put Jeep in park, and release brake. At this time the dealership has sent the video to corporate and awaiting direction. No corrective action has been performed.
Unidentified noise from transmission. Dealer found broken spring on clutch plate. Chrysler refuses to acknowledge problem. Only indicating that the clutch is a "wearble part". Dealership indicates could have caused catastophic failure of transmission resulting in loss of control of vehicle. Checked with 7 other dealerships and no one has seen this same problem in their shops.