2025 Hyundai Tucson Hybrid forward collision avoidance problems

Not sure what failed. At around 8:30 am on a sunny clear day the driver was maneuvering slowly up a ramp between first and second floors of a parking garage at the college campus where the driver works. Driver paused the vehicle and slowly turned to the right to park in an open spot about halfway up the ramp. There was a large concrete pillar to the right of the parking spot and a low steel cable wall at the end of the parking space along the inner structure of the garage.

The contact owns a 2025 Hyundai Tucson. The contact stated that while driving 22 MPH and attempting to depress the brake pedal, the vehicle in front of the contact stopped suddenly, causing the vehicle to stop suddenly. There was no warning light illuminated. The vehicle was serviced under NHTSA Campaign Number: 26V316000 (FORWARD COLLISION AVOIDANCE) by the owner, but the remedy failed to fix the vehicle. The contact stated that the failure had occurred twice.