NHTSA Complaint #11543063 — 2023 RIVIAN R1S

The car automatically, abruptly, and without warning shift into park as I slowed down at a stop sign and stalled in the middle of the road. It did not shift into Park for 30-35 mins and even after doing hard and soft resets while on the phone with service. Somehow it worked again after my hitting the brakes several times and I was able to move it out to the side and drive it back home. This issue has happened multiple times in the past too but it only happened for a few seconds as opposed to such a long time. The car had a ‘charger not connected properly’ warning on the dashboard. My safety and that of my wife was put in danger as an abrupt and automatic shift to park disrupted traffic and we could’ve been rear-ended. This is also a particularly troubling issue if the car stalls abruptly when slowing down on the freeway and cars in the back are speeding up and end up rear-ending my car. This situation could be fatal. I wasn’t able to reproduce the event but it has happened to me multiple times in the past. Rivian is looking into this issue now as I’ve dropped off my car for service today (9/6). I did receive responses to my post on Reddit about this situation and other customers complaining of experiencing the same issue. There were no warning lamps or prior warnings of this issue. The dashboard showed a charger not installed correctly error but I believe that’s for another issue I’ve had with the car where the car does not fast charge. The issue first appeared for me in stop and go traffic in Seattle downtown a few days after taking delivery of the car in June, and once again on the Canada-US border in Vancouver in July when moving slowly in line to reach the immigration booth. The car abruptly stopped and would not shift back to drive. It took a minute or two but it eventually shifted back to drive.