Rearview System Braking problems of the 2023 Nissan Kicks

I have had several incidents where my vehicle malfunctioned. The most recent one that I was concerned about my safety was that I was driving 55 mph where my car applied the automatic emergency feature and suddenly started breaking without reason. I was not able to accelerate due to the malfunction of the car breaking on its own and when the car reached about 30 mph that’s when I was able to accelerate again. The other incidents is when the car’s crashing system warning lights and beeping would come up constantly even when no cars are around. As well as when I am going in reverse. My car will start beeping and warning me that I am going to hit something while everything is clear.

March 2023 master warning light symbol on dashboard and rear automatic braking (rab) warning light symbol on dashboard. Warning malfunction see owner's manual and warning parking sensor error see owner's manual. June 2023 warning no key detected, check rear seat for all articles and parking sensor off. Vdc settings menu illuminated light dims while accelerating and returns to normal. Vehicle is available for inspection. Rear sensors are not working to warn of obstructions as designed. Two service dealerships have serviced vehicle. No repairs, only diagnostic testing at one location. Dtc c1b56-04 (sonar circuit), dtc b2720-66 (rear sonar sensor). No other inspections have been performed. March, prior to warnings while vehicle was in reverse, another vehicle turned from around a corner. My vehicle automatically made a hard stop to avoid contact with vehicle. Warning messages appeared afterward within same month. I asked service advisor and service manager at separate locations if hard stop could have caused warning malfunction messages but received no response.