2019 Hyundai Tucson forward collision avoidance problems

Driving on highways or interstates with the adaptive cruise control is when this happens. The first time I was driving on a sweeping left turn and coming up fast on a truck in the slow lane I was driving in, so I put on my blinker and made a quick lane change into the fast lane to get in front of another car in the fast lane behind me.

The contact owned a 2019 Hyundai Tucson. The contact stated while driving 45 MPH, the Forward Collision Avoidance warning light illuminated. The contact stated that the vehicle automatically brake, independently without the brake pedal being depressed. The vehicle was taken to an independent mechanic where several codes were illuminated and advised the contact to take vehicle to the local dealer. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure.