NHTSA Complaint #11453512 — 2021 TESLA MODEL Y

At 12:21pm on February 20, 2022, while driving on a divided highway (US-36), the Tesla Model Y braked hard with no cars nearby. The braking occurred as the car encountered a shadow on the roadway from an overpass. The sun was very bright, so the shadow had very high contrast. We suspect this is a case of "phantom braking", as has been reported with many Tesla Model Y and 3. The problem is not easily re-producible, but we also do not feel safe using the cruise control feature any longer, so it's unlikely to be reproduced soon. The vehicle has not been inspected by Tesla, nor confirmed by the dealer. There were no warning lamps or chimes - just a sudden, hard braking for approximately 1 second, losing approximately 20mph, immediately.