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.
ReturnPro CEO Sender Shamiss to discuss how his company is changing the way we make returns and how Trump's tariffs are affecting the return business. Watch!
Chris Beauchamp, Chief Market Analyst at IG International, joins J.D. Durkin to give analysis on the recent trade truce between the U.S. and China. Watch!
Shan Aggarwal, VP of Corporate and Business Development at Coinbase, discusses the company's acquisitio of Deribit as it heads into the S&P 500. Watch!
Shopping expert Trae Bodge discusses how talks between the U.S. and China is good news for now, but uncertainty remains for back-to-school and the holidays.
Jake Traylor, White House reporter at Politico, joins Cheddar to discuss how Trump is aiming to lower drug prices and how it differs from Biden's approach.
DJ X, alongside Molly Holder, Senior Director of Product Personalization, takes us inside Spotify's A.I. DJ and how it's the best new way to listen to music.
Sheryl Palmer, CEO of Taylor Morrison, talks tariff uncertainty, being a female leader in a male dominated industry and what homebuyers need to know. Watch!
