One problem related to differential unit has been reported for the 2014 Jeep Wrangler. The most recently reported issues are listed below.
I noticed there is a leak from my oil filter housing, I could t tell why in my under carriage I had oil going back near transmission followed the leak up to the oil filter housing I am not sure if it is cracked but at only 49k this should not be happening and I have read on many threads this is any issue this should be a recall and covered under power terrain warranty. I noticed it because I was checking my differential fluids and saw the mess of oil spraying all over my under carriage.