The US National Highway Traffic Safety Administration (NHTSA) has commenced an investigation on 2.4 million Tesla vehicles running on Full Self-Driving (FSD) software after reported cases of collisions,

Office of Defects Investigation (ODI) has launched a new investigation into Tesla’s “Full Self-Driving” (FSD) feature

NHTSA initiated the investigation after four crashes involving Tesla vehicles with FSD engaged during low-visibility conditions, such as sun glare, fog, or airborne dust. One of these crashes resulted in a pedestrian fatality, while another involved a reported injury.

NHTSA said on Friday that it is opening an investigation into nearly 2.4 million Tesla vehicles on the heels of reports of four crashes where its FSD partial driving automation system was engaged.

Full Self-Driving system following reports of four crashes, one of which resulted in a fatality. Failure of the system engineering controls to react appropriately to reduced roadway visibility conditions,

NHTSA initiated the investigation after four crashes involving Tesla vehicles with FSD engaged during low-visibility conditions, such as sun glare, fog, or airborne dust. One of these crashes resulted in a pedestrian fatality, while another involved a reported injury.

A federal investigation into Tesla was announced Thursday after one person was injured, and one died after a crash involving a self-driving Tesla.

The National Highway Traffic Safety Administration is investigating some 2.4 million Tesla vehicles after reports of self-driving crashes.

Four crashes and one death could lead to a costly recall or FSD being banned. Today, federal safety investigators opened a new investigation aimed at Tesla's electric vehicles. This is now the 14th investigation by the National Highway Traffic Safety Administration and one of several currently open.

NHTSA said the investigation will examine the system’s ability to function in reduced-visibility conditions.