NHTSA Complaint #11601225 — 2021 CHRYSLER PACIFICA

I am having a problem with my under-warranty (32,000 miles) 2021 Chrysler Pacifica which the service department at my dealership appears unable to help. I was driving on an interstate in stop-and-go traffic for a couple of hours. It was a very hot day, temperatures well above 90 degrees. Six times over 15 minutes the following occurred: While coasting/braking, so at low RPM the engine turned itself off I braked to stop the vehicle The vehicle put itself into Park A message on the dash said to place my foot on the brake pedal and press the button to start the engine I did so, and the engine cranked for an unusually long time, becoming longer each of the 6 times, before eventually starting By the last time we were doubtful it would start at all After the 6th time I cut my long-distance trip short, turned around, and came home in normal (not stop-and-go) highway traffic conditions, with no more engine failure. The check engine light did not turn on, and no service codes were generated which could have been related to these power failures My local dealer's service department (Pohanka in Salisbury, MD) tested the alternator, starter, and battery and found nothing wrong. They did charge the battery up a bit, saying it took only 20 minutes. They have been unable to re-create the problem, which is not surprising, due to the unique conditions under which it happened. They say there is nothing they can do about my problem under warranty because there is no code and they can't reproduce the problem, so they want to give me back a vehicle that we know behaved unsafely six times under dangerous conditions. Engines failing without warning on interstates are likely to result in being rear-ended. I see online that the hybrid model of the same model year has a recall for exactly this same issue, so it is not a new issue for Chrysler, although maybe new-ish for my non-hybrid model of the same vehicle.