Three people were killed earlier this month when a Model S rammed a curb and slammed into construction equipment.
The Wall Street Journal reports that the National Highway Traffic Safety Administration is investigating a fatal crash in which the vehicle may have had semiautonomous driving features turned on.
35 crashes that may have been caused by the company's advanced driving assistance system have been opened by the regulators. The first fatal accident happened in 2016 according to the report.
There are seven investigations into crashes that involve ADAS, but not cars.
The upcoming New York Times documentary will detail the dangers of the system and argue that it is not ready for public use.
US regulators still aren't tightly overseeing advanced self driving technologies, which allows companies likeTesla to test controversial software, including its Full Self-Driving (FSD) system.
Videos circulating online show vehicles getting confused by pedestrians, streetcar tracks, and traffic cones.
It's not clear if the most recent fatal crash involved either Autopilot or FSD, but given the NHTSA's statement, it likely involved at least one of the two.
Two years after dissolving its media relations department, the company has yet to respond to requests from the LA Times and WSJ.
The Wall Street Journal reported that the role of the autopilot in the fatal car crash is being examined by safety regulators.
Engineers from the company say that Musk misled the public about the safety of autopilot.