NHTSA Complaint #11452798 — 2021 TESLA MODEL Y

I am aware that NHTSA is investigating Tesla over the emergency braking issue when using its advanced features. When I have read articles about this they always reference auto pilot or full self driving. I wanted to make sure you knew that this issue also impacted adaptive cruise control. When I brought my Model Y home in August of last year I quickly learned I could not safely use the adaptive cruise control. I live in rural NE Iowa, and mainly drive on two lane roads. If I was on a downhill slope and meeting a vehicle with any kind of height to it the car would activate emergency braking, even though the other vehicle was completely in its own lane. It appears to me this issue has gotten better as updates have been issued the last six months and I have started to gingerly use cruise control again. It is common in the winter here to have tall piles of snow in parking lots. I also noticed on a sunny day I could drive right up to one of these piles when parking. It was striking that that huge pile of snow was invisible to the vehicle. Any other time I approach a barrier (e.g. pulling in to my garage) it gives all manner of warnings and a visual indication of how far you are from the wall. This issue would be much more dangerous if an analogous situation occurred using Autopilot or FSD. It is my understanding that for the 2021 Y Tesla went to just a camera based system (dropped LIDAR). I don’t know if that is what caused these problems or not. The car is a joy to drive. BUT, Tesla’s habit of releasing updates and features to the masses before they are fully tested is dangerous in my opinion. There are more Tesla’s on the roads these days, at some point the accidents are going to add up. The ability to update systems that control how a car is operated/functions is relatively new. I would offer that the processes around how these updates are managed should be the subject of a separate investigation.