DETROIT (AP) — Tesla is recalling more than 817,000 vehicles in the U.S. because the seat belt reminder chimes may not sound when the vehicles are started and the driver hasn’t buckled up.

Documents posted Thursday by safety regulators say the recall covers the 2021 and 2022 Model S sedan and Model X SUV.

Also included are the 2017 through 2022 Model 3 sedan and the 2020 through 2022 Model Y SUV.

Federal laws require the chimes to sound when vehicles are started, and the sound stops when front belts are buckled.

The documents say the problem happens only if the driver left the vehicle in the previous drive cycle while the chime was sounding.