The probe covers an estimated 280,000 vehicles. Five drivers alleged in complaints they couldn't steer the vehicles at all. Seven more cited a loss of power steering that required increased steering effort.
There was one report of a crash but no complaints of any injuries.
The agency says in a document posted Tuesday on its website that loss of steering control can be accompanied by messages to drivers indicating that the power steering assist has been reduced or disabled.
The document says investigators will look into how often the problem happens, manufacturing processes and the severity of the problem.
The probe is at least the sixth started by the agency into Tesla vehicles in the past three years. Investigators are looking into Teslas that can crash into parked emergency vehicles while running on the Autopilot partially automated driving system, emergency braking for no reason, suspension failures, steering wheels that can fall off, and front seat belts that may not be connected properly.
Messages were left Tuesday seeking comment from Tesla.
About 780,000 pressure washers sold at retailers like Home Depot are being recalled across the U.S. and Canada, due to a projectile hazard that has resulted in fractures and other injuries among some consumers.
President Donald Trump has fired one of two Democratic members of the U.S. Surface Transportation Board to break a 2-2 tie ahead of the board considering the largest railroad merger ever proposed.
Ford is recalling more than 355,000 of its pickup trucks across the U.S. because of an instrument panel display failure that’s resulted in critical information, like warning lights and vehicle speed, not showing up on the dashboard.
The Rev. Al Sharpton is set to lead a protest march on Wall Street to urge corporate America to resist the Trump administration’s campaign to roll back diversity, equity and inclusion initiatives. The New York civil rights leader will join clergy, labor and community leaders Thursday in a demonstration through Manhattan’s Financial District that’s timed with the anniversary of the Civil Rights-era March on Washington in 1963. Sharpton called DEI the “civil rights fight of our generation." He and other Black leaders have called for boycotting American retailers that scaled backed policies and programs aimed at bolstering diversity and reducing discrimination in their ranks.
President Donald Trump's administration last month awarded a $1.2 billion contract to build and operate what's expected to become the nation’s largest immigration detention complex to a tiny Virginia firm with no experience running correction facilities.