Three problems related to transmission slip out of gear have been reported for the 2012 Jeep Wrangler. The most recently reported issues are listed below.
12 jkru 52,000 miles. It first happened at night while wife was driving on interstate Jeep went crazy mode all lights in cluster illuminated warning lights flashing and with hot oil msg, warning dings going off, heard electric fan running . It seemed that nothing was controllable, auto trans went into and would not shift out of first gear. Scared the hell out of my wife. Got home after shut off I tried to restart but nothing happened. I disconnected battery to reset cpu that did not work. I stopped by auto zone to get codes scanned . They told me every system was reporting failure and needs to go to dealer. After restart every thing was normal. After 100 yards down the street it all happened again. Pulled into store parking lot, turned Jeep off and would not restart till 4th try. Drove it strait to dealer in first gear with all. They said that it was tipm and not under warranty, gave MA a rental car for 10 days because part is on back order. After 10 days Chrysler quit paying for rental car and still have no part to fix Jeep it has been 16 days. I guess there are alot of failures for the tipm causing back order and do not know when they will get one.
The contact owns a 2012 Jeep Wrangler. The contact stated that the steering wheel became extremelly hard to maneuver. Also, the contact mentioned that the transmission would slip out of third gear. The vehicle was towed to an authorized dealer. The vehicle was not included in NHTSA campaign id number: 13v234000 (power train and steering). The manufacturer was notified of the failure. The approximate failure mileage was 23,640.
Appears that during winter months/cold weather the manual transmission will jump out of gear. It happens during sudden jars to vehicle, examples would be railroad tracks and pot holes. Also it will jump out of gear during heavy acceleration.