NHTSA Complaint #11452436 — 2021 TESLA MODEL Y

The adaptive cruise control and lane assist on the Tesla Y models are defective and pose significant risk to drivers, occupants and surrounding traffic. Phantom braking and sudden slowing are common place and many times unpredictable. Countless times when oncoming traffic in the other lane approaches, sudden braking and aggressive slowing will occur especially if this happens to be a logging truck or larger vehicle. Coming under any overpass or bridge will also produce phantom braking. This will happen countless times in a single trip rendering the adaptive cruise useless. I complained to Tesla and was called by the corporate office in Denver and told that this is a reality and it was my responsibility to "teach the neuro-net" that it's phantom braking was an error by accelerating aggressively during those episodes and producing "bug reports" to Tesla! I have had this Tesla 3 months now and have stopped using the cruise control and lane assist because of safety concerns. My attempts at "teaching" the computer the correct response has utterly failed. I have had 3 episodes that I know of that someone following closely behind me had to take evasive action which precipitated "road rage" type behavior on their part for no fault of my own. Tesla has made no effort to correct this defect and have even cancelled my repair appointments stating it was"not needed". Every Tesla owner I discussed this issue with has a similar experience. Eventually someone will get injured or killed due to this defect.