The National Highway Traffic Safety Administration said on Tuesday it has opened a probe into 2.6 million Tesla vehicles in the United States over reports of crashes involving a feature that allows users to move their cars remotely.

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

Safety regulators launched the investigation after reports of crashes involving the feature, which allows drivers to summon parked cars.

The U.S. government is probing Tesla over a driverless feature in its electric vehicles, according to the National Highway Traffic Safety Administration (NHTSA). The NHTSA cited Tesla’s “Smart Summon” and “Actually Smart Summon” features,