The faulty seatbelt chime affected 817,143 vehicles, including Model S, X, 3 and Y of model years 2021 and 2022.
Federal safety standards require that an audible seat belt reminder sound after a vehicle is started if the driver’s seat belt is not detected as fastened.
This seatbelt chime did not sound on some Teslas due to a software bug, according to the document filed by the automaker.
The bug occurred after a driver exited the vehicle when the chime was sounding, then re-entered the vehicle. The issue wouldn’t occur if the vehicle was going over 13.7 mph, according to Tesla. The automaker’s visual alert of an unbuckled seatbelt was also unaltered by the flaw, according to the document.
The South Korea Automobile Testing & Research Institute notified Tesla of the issue on January 6 this year. Tesla concluded on January 25 that there was indeed a problem. There have been no accidents, injuries or fatalities as a result of the bug as of January 31, according to the document filed by Tesla. The automaker did not respond to a request for comment from CNN Business.
Tesla has received heightened scrutiny from the National Highway Traffic Safety Administration over the past year.
The administration said yesterday it was considering an investigation into complaints that Teslas sometimes brake unnecessarily.