Driving 60mph in 8th gear while raining, 40 deg F, in Minnesota. The truck shut off (I did not press the Start/Stop button) and dash said ‘Vehicle Not in Park.’ Went to pull over, put on turn signals, but they didn’t work (it acted like the vehicle was completely shut off but was still rolling at 50+ mph in 8th gear — there was no indication on the dash that showed green light indicating turn signal was working). I suspect brake lights also did not work at this time, but cannot confirm because I couldn’t see them. I pulled over to shoulder, slowed to a stop, and put vehicle into Park manually. Pressed Stop/Start button and vehicle started. No codes were thrown. Drove another 2-3 miles and similar issue happened again. Display flashed on and off (then completely turned off) when coming to a stop this time. Vehicle stayed running but again said ‘Vehicle Not in Park’ on dash. No other indication on dash (no warning lights). Drove vehicle back to dealership to get inspected. Similar issue occurred 4 more times on the 12 mile drive to dealership. When I got the vehicle into the service shop, I put it into Park, then pressed the Start/Stop button, but the truck would not shut off. I left the vehicle with the dealer and they are currently diagnosing the issue. 105,000 miles on vehicle. First time this issue has ever occurred on the Ram since I bought it used with 67,000 miles on it. Scared the heck out of me — I had cars swerve around me as I pulled off to the shoulder without any indication — no brake lights (I assume), no turn signals. Very scary. I am worried about driving my family (wife and 2 young children) in this vehicle. What has scared me even more is I looked up this issue online and I have found 100s of examples in the forums of similar (or exactly the same) issue happening to them! I have had all recalls completed on my truck and keep meticulous care of it. I am an engineer and understand technical details well — this electrical issue scares me. Not safe.