NHTSA Complaint #11540163 — 2022 TESLA MODEL Y

While driving with the adaptive cruise control engaged, the car has suddenly braked (hard) when the associate optical system encountered a shadow or some anomaly on the road ahead. This "phantom braking" has occurred numerous times on our vehicle, and speaking with our son who also has a Tesla Model Y, he has experienced the same behavior. To date, I have not contacted Tesla, due to the intermittent nature of the problem, and trouble getting a response from their website. For the time being, I will not use the adaptive cruise control if there is another car within several hundred yards behind me in order to avoid a rear-end collision incident. My understanding is that Tesla removed the radar input component of adaptive cruise control, which would have prevented this type of behavior. A prospective fix is to restore a radar sensor input to the system.