My vehicle had been at the Land Rover South Bay Service department from 11/3/21 to 11/10/21 because the suspension fault indicator had come on the prior week and the air suspension had temporarily failed. In addition, it occasionally does not start when I press the start button with my foot depressing the brake pedal and the key is in the car. It is a brand new vehicle with about 1,750 miles. On 11/11/21 I was driving the vehicle down a hill at approximately 40-45 MPH when the automatic emergency braking system self activated for no reason. The vehicle came to a rapid, abrupt stop and the closest vehicle in front of us was at least 20 yards ahead. There were no obstacles in the road. Luckily, there was no vehicle following me or we would have been rear-ended. There was a red hazard signal with a red exclamation mark that appeared on the display near the speedometer and an audible alarm sounded. I immediately brought the vehicle back to the Land Rover Service department and they did a "scan". They informed me that they did not detect any faults or any history of a problem. I love this vehicle but I am now obviously concerned about driving it. I informed the dealership that if this happens again I will return the vehicle and request a refund.