2024 Jeep Grand Cherokee 4XE

This is a followup to complaints 11574396 & 11574483. I was advised by service that the vehicle passed an inspection and it was ready for pickup. I went to the service department to pick up the vehicle. The service manager advised me that the vehicle was properly wired, and that he believed the problems that I have experienced were resolved through software updates. He also advised me that he believed the issue of the vehicle not accelerating past 29 mph was due to the vehicle being placed into manual mode through the vehicle's paddle shifters, because 29 mph is the limitation for 1st gear. I advised him that I never used the paddle shifters, but he insisted that I must have hit them by accident. He also advised me that in the event the vehicle enters manual mode, I can exit that mode by holding down the right paddle. I took back possession of the vehicle and began to drive home. I did not even make it half a mile before the vehicle once again began to experience serious malfunctions. The engine once again shut off while driving. I pulled onto the swale. Once again, the "D" was blinking on both the shifter knob and the driver info panel screen. There were numerous error messages and icons displayed. This included the check engine light, battery warning light, check hybrid electrical system light and warning (wrench with lightning bolt), and service electronic stability control warning. The vehicle also stated that the auto emergency braking system was engaged in active braking, despite the fact I was not near any other vehicle or object. There were other warning messages that displayed but that cycled through too quickly for me to read or photograph them. After restarting the car, once again, the vehicle would not accelerate past 29 mph. The screen showed the vehicle was in manual mode, in 1st gear. I could not return to manual mode. The service manager has indicated that engineering technicians must be brought in.

Last night, an incident occurred, which was previously reported to NHTSA. This morning, while driving to the dealership to address that incident, the vehicle's engine turned off while driving in hybrid/gas mode. The "D" was blinking on both the shifter and on the driver information panel. I was able to turn the shifter knob to put the vehicle into neutral, reverse, and park, but there was no change in vehicle behavior. Putting the shifter back in drive did nothing, and the car remained inoperable. All the while, the infotainment system remained on. Eventually I was able to restart the engine and drive. During the resulting drive to the dealership, which was done in hybrid/gas mode, the vehicle would not accelerate past 29 mph. The engine would sound normal until reaching approximately 28 mph, at which point it sounded like the engine was cutting off, and then acceleration would cease at 29 mph no matter how much the gas pedal was pressed. The vehicle was taken to the dealership. I have been informed that they are looking into the source of the various problems reported here and in a previous report. I was informed that a diagnostic test revealed nearly 50 error codes. Several photos and videos were recorded.

This report involves a vehicle that was leased new from a dealership less a week ago. This vehicle has barely 200 miles on the odometer. While driving in electric mode, the engine completely shut off. The car shifted into park in the middle of traffic. I couldn’t shift it out of park — not even into neutral to push the car off the street. The screen was telling me to press the brake and the start button, as if I was starting the engine. But doing those things did nothing. I couldn’t start the engine, and I also couldn’t turn the car off. The infotainment system was still running. Eventually, the passenger opened the door, which caused the car to turn off. From there I was able to restart the engine. I then drove home in hybrid/gas mode. The check engine light was on the entire ride back, and it remains on the next day. One other thing. In the few days I’ve had this car, there have already been 5 or 6 times where electric mode shuts off while I’m driving, even if I still have battery left, and the car shifts into hybrid/gas mode. A message will appear telling me that electric mode is temporarily unavailable. When that happens, I have to wait several minutes to try to put electric mode back on, otherwise it won’t work.