2019 Honda Civic forward collision avoidance problems

I was on a state road exiting on a ramp while the vehicle was in motion driving 40 miles per hour approximately two days ago. The vehicle while in motion and accelerating stopped. The car threw me back and forth causing me to go the er the following day. Reston hospital in northern virginia. I took the car right after and dropped off at dealership for repair. Dealership is not giving me any concrete answers if the car is safe to drive again.

Every time I drive at least 30-35 miles I get the mitigation, collision and ACC problem ive taken the car to honda 3 times and they are not able to figure out the problem. I've paid for them to recenter the radar sensor but that didn't work now they are requesting I replace radar for $1,500. This car has 40,000 miles on it why am I having issues already? Once I turn the car off the error message leave but once I get to the 30-35 miles it comes back up.