NHTSA Complaint #11512861 — 2021 TESLA MODEL Y

This is my second NHTSA report for this car, there was no reply to my first report. Since the manufacturer, without warning or owner consent, disabled radar systems for automated cruise control, the car is now exhibiting a new dangerous behavior when the camera detects the presence of emergency vehicle flashing lights and suddenly, and dangerously applies an emergency brake to slow the car, without taking into consideration the location of the emergency flashing lights relative to my car, or the presence of other cars around me that might be affected by the sudden, un-announced braking of my car. In many cases, the police/emergency lights are on the opposite side and direction of the freeway, 8+ lanes away from my car, and I am under no legal obligation to brake, nor would it be safe to do so. There is no warning by the car, only the sudden braking action and I have almost been hit from behind by other cars who were not expecting my car to brake while at freeway speed. This event has occurred at least 10 times in the past year regardless of time of day, weather or traffic conditions. I would like the previous complaint I filed about sudden, unexpected braking, as well as this new complaint reviewed by the NHTSA, as this is evidence of a critical, significant safety hazard by the car which the manufacturer has deliberately created.