Three problems related to automatic transmission control module have been reported for the 2007 Jeep Wrangler. The most recently reported issues are listed below.
Vehicle loses power to accelerator at random, unpredictable times (could be at a stop sign, could be while traveling on a highway, and does not matter if car is hot or cold). Warning light (lightning bolt) flashes on the dashboard, and accelerator is sluggish to respond or unresponsive altogether. I have nearly been in two accidents while pulling into traffic because cars starts to go, but then loses power and the accelerator takes about 3-4 seconds to recognize I am stepping on it. I have had it into Chrysler dealership three times now, and they are unable to diagnose the issue. First time the accelerator pedal assembly was replaced. The second time, the pcm module (drivetrain computer/module) was replaced in its entirety. Problem started occurring around 30,000 miles, and has continued since (now at 41,500). Has nearly caused me to be in two bad accidents, which caused other cars to swerve/skid around me because I was stopped broadside in roadway. They would not acknowledge problem until they made me drive them around our city, and prove to them what happens. Luckily it happened while he was in the car with me, but the service techs are unable to diagnose the problem and continue to work with Chrysler engineers to no avail. Other instances include being stopped at a red light on a hill, and not being able to go forward in time, and nearly drifting backwards into vehicles behind me. This requires use of heavy foot on gas and emergency brake. Additionally, vehicle is a 6 speed manual, and sometimes 'pops' out of first gear while starting from a stop position. This issue has happened for the last 5,000 miles approximately but is becoming more common (nearly daily). I believe they will be able to diagnose this issue and correct it (common problem according to my internet research), however it does not appear they have a handle on the first issue. I have been told to leave my vehicle at the dealership until they can diagnose and fix the problem, it's not safe.
Electronic throttle control fails causing the engine to stall during normal driving conditions.
The contact owns a 2007 Jeep Wrangler 4x4. While driving at 65 mph the steering locked, instrument panel dimmed, and the vehicle shut off. The vehicle restarted automatically approximately four seconds later. The vehicle was taken to a shop and no failures were found. This morning, while driving 65 mph the failure's recurred. The contact stated that the radio shut off without warning and the vehicle automatically restarted four to five seconds later. The contact never turned the key in the ignition, changed lanes, or changed gears when the vehicle restarted. The dealer could not duplicate the failure and stated that the vehicle had an investigation open with NHTSA, action # pe07009 regarding electrical system power train:automatic transmission:control module (tcm, pcm)). The current mileage is 4,971, and failure mileage was 2,000. Updated 06/26/07.