2023 Kia Soul Brakes Problems

When driving my vehicle under normal conditions, the car will unexpectedly slow down on its own, and the system brake lights and hazard lights will activate as if I am about to be in a collision, even though no accident is occurring. I have noticed this issue most frequently when I am stopped at a traffic light and begin to accelerate again. Once I turn the car off and restart it, the warning lights go away, but the issue continues to reoccur.

Purchased this 2023 Kia Soul on 12/9/2022 from Gateway Kia of North Brunswick, the incident occurred on 12/30/2022 and subsequently occurred a second time after that, I don't have the exact date for the second occurrence. Both occurrences happened with less than 1000 miles on the vehicle. After driving I put the transmission into PARK, with my foot still on the brake pedal, I applied the parking brake (this model has a manual brake you pull not the electric brake) this brake is also known as the "emergency brake" or "hand brake." After a few seconds with my foot still on the brake pedal I heard a loud bang and the parking brake disengaged all by itself, all the way back down. It just slipped. If the vehicle had been in neutral it could have rolled away. Just so happens that both times this happened I was on a relatively flat surface but the vehicle could still have rolled slowly. I contacted the dealer I bought it from today, 1/10/2023, not to make an appointment for service but to let them know this happened so it's on their radar in case another Kia vehicle comes in with the same problem. If I were to bring it in for them to look at it, they most likely won't be able to duplicate it and send me home telling me it's fine so I don't want to waste my time. If it happens again I will be contacting the manufacturer and for sure escalating the issue, in the mean time I just make sure to park on a surface that is as flat as possible and of course make sure to keep the transmission in PARK.