NHTSA Complaint #11713850 — 2023 JEEP GRAND CHEROKEE

Vehicle was charged to full overnight. Vehicle was warming up in the garage on the charger in EV mode for approx 20 minutes. Vehicle cabin was warm when unplugged and put in reverse. Vehicle struggled to get through minor snow until traction control was turned off even with being set to "snow" mode (excessive slip). Outside temperature was -1 at the time (well above cold weather operating temperature) when EV powertrain immediately ceased. The vehicle then went into a limp mode. After 20 minutes or so the gas engine functioned normally and the vehicle was on the road without any EV power (regenerative braking was restoring additional battery). Stopped at dealership on my way to work to have a DTC code analyzed from when this event occurred and it was TCM-P1D97-00 Incorrect Gear Ration: Clutch A or D Defective. The vehicle has exhibited transmission hiccups and been reported, so this appears to be a symptom of a consistent problem. At some point I recall the vehicle engaging the parking brake automatically, and the shifter demanded I put the vehicle into P to select my gear. It took a brief moment to understand what the car was doing, but I still have no idea WHY it did it. I followed the standard procedures of press brake while in park, push parking break lever/button until it disengages, but it put itself back into park a couple times before finally driving. I turned the vehicle off and on a couple times during this event as that is what Stellantis has said to do when the vehicle isn't fully operable. It was just a weird scenario of me doing the same steps to engage drive while the vehicle went back to parking brake mode until it finally stopped fighting me. The ensuing drive to work seemed normal. I did not hear or feel anything abnormal other than the complete lack of EV power. Thankfully the event occurred in my subdivision where no other cars were impacted by my vehicle's lack of mobility or determination to stop in its tracks.