NHTSA Complaint #11422267 — 2021 TESLA MODEL 3

Automatic cruise control (autopilot) has twice failed to decrease speed when it should have. The vehicle will also brake at a moderate to high rate on the highway with zero warning or message, with no obstacle or vehicle on the road, creating a dangerous situation with following vehicles. ACC also requires the use of automatic wipers and automatic high beams, both of which activate at random times and thus encourage their disuse (e.g. sunny clear day, or with obvious traffic in front of the vehicle, respectively). Automatic high beams turning on and flashing when they shouldn't is unsafe for other drivers. Finally, the use automatic wipers and high beams is not listed as a requirement for active safety features such as FCW and AEB to function. However, these two critical safety systems rely on the same camera array and systems with problematic functionality described above. It's hard to believe that these actual safety systems, listed as a feature of the vehicle, are able to function as required when the full array of sensors and logic, shared with autopilot, are unable to perform reliably.