The adaptive cruise control system is defective and dangerous. Slams on the brakes when approaching vehicles inside considered safety zones. Slows vehicle from 75-80mph on the freeway to less than 60mph. Vehicles behind forced to brake to avoid collision. Changing lanes the vehicle failed to resume highway speeds in a acceptable manner potentially causing vehicles in that lane to brake to avoid collision. In traffic the system is so jerky it can't be used. The system also fails to recognize an open lane and resume speed. The system also responds to vehicles to the driver's side lane and slows down and won't resume speed. In left or right turns on the freeway at freeway speeds the system reacts to vehicles across lanes and slows the vehicle to less than a safe operating speed causing a potential danger to not only the car we are in but to cars following behind. The collision avoidance system also malfunctions by the "brake" warning light comping on for seemingly no reason.

- Layton, UT, USA