WASHINGTON: Tesla Inc is recalling more than 817,000 vehicles in the United States because an audible alert may not activate when a vehicle starts and the driver has not buckled their seat belt, a US auto safety regulator said.

The National Highway Traffic Safety Administration (NHTSA) said Thursday the vehicles -- some 2021-2022 Model S and Model X, 2017-2022 Model 3, and 2020-2022 Model Y vehicles -- fail to comply with a federal motor vehicle safety standard on "Occupant Crash Protection" because the audible chime does not activate.

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Tesla will perform an over-the-air (OTA) software update to address the issue.

Tesla told NHTSA that as of Jan. 31 it was unaware of any crashes or injuries related to the issue.