https://www.reuters.com/article/us-autos-tesla-probe/u-s-nhtsa-reviewing-claims-2000-tesla-vehicles-should-have-been-recalled-idUSKBN1WJ1SN

The U.S. National Highway Traffic Safety Administration (NHTSA) said on Friday it is reviewing a defect petition that claims Tesla Inc failed to issue a recall when it issued a software upgrade in 2,000 Model S and Model X vehicles in May.