NHTSA Complaint #11516412 — 2021 JEEP CHEROKEE

2/14/23 Dash Flashes “Put Car in Park”; battery symbol illuminates, gear shift ‘D’ lit up. Coasted to the shoulder, put car in park, engine was not running. I hit the “Start” button. The engine starts up, I put it into Drive, and pull onto the road. This repeats 2 more times. 2/20/23 Car serviced at Chrysler dealership - Service report said Updated PCM 181906EL Module. ECU from old part number 68493558AD to current part number 68493558AG. 3/7/23 - Vehicle lost power. Coasted to nearest driveway to turn off the main road. No power steering, Car was successful moved out of traffic, put in park, and then the engine was restarted. 3/9/23Mileage in 22536; Replaced Module - Engine controller, crankshaft position sensor, wit all wheel drive, powertrain/engine control. 3/23/23 Vehicle returned mileage 22562. 4/4/23, Driving freeway, vehicle started decelerate on its own, maneuvered to the shoulder and put it into park. There were no lights or indicators on the dash to say there was a problem. Car did not stall. Returned to the roadway and maintained speed. Approx 22980 miles on the vehicle, cruise control was on 77. The vehicle started slowed to 68 mph, maneuvered to the shoulder; did not lose power; Put car in park. Traffic cleared to re-enter the roadway. Next 30 minutes, problem repeated. Did not have anyone behind me so I wanted to see at what point would I lose power, or warning lights come on. Cruise set at 77, the car reduced speed on its own to 64 mph. The car acted like it was changing gears a few times, lurching, then picked up speed to 80 mph, then slowed back to the setting of 77. This happened 3 more times. 4/6/23, 23381 miles on the vehicle, driving 45 mph, w/out cruise control. Vehicle began to decelerate, I tried to accelerate to keep up with traffic. The vehicle continued to decelerate down to 36 mph when it kicked back into gear and picked back up to 45 mph. 4/10/23 back to dealer @ 23,608