The agency has previously looked into other iterations of Tesla's Summon self-driving option.

NHTSA will investigate Tesla's Actually Smart Summon feature after receiving multiple reports of crashes. Here's what's going on.

The National Highway Traffic Safety Administration has opened a probe into 2.6 million Tesla vehicles in the United States after it received several reports of crashes involving the use of the so-called Actually Smart Summon–or ASS–remote driving feature.

The “Actually Smart Summon” feature enables drivers to remotely summon or move their vehicles to them or another location via a mobile phone app.

The National Highway Traffic Safety Administration announced it is investigating nearly 2.6 million Tesla vehicles over a remote driving feature.

Dozens of videos reportedly show Tesla vehicles colliding with other cars, parking signs, and walls while using a driverless remote parking feature.

The investigation into the summons feature likely comes as a blow to Tesla, which has been trying to advance its driverless capabilities lately. In a somewhat controversial move, Tesla's summons feature relies on a camera-only approach, as opposed to competitors using lidar, radar and cameras for driverless capabilities.

The National Highway Traffic Safety Administration said Tesla’s automated summoning feature has been linked to at least four crashes.

The agency has previously investigated earlier versions of Smart Summon, which is meant to let a Tesla vehicle park itself or fetch a driver via remote app command.