NEW YORK (CNNMoney.com) -- The U.S. will open an investigation Thursday to probe possible steering issues on about 500,000 Toyota Corollas.
According to a National Highway Traffic Safety Administration official, about 363,000 Corollas from model year 2009 and 136,000 from 2010 could be affected.
NHTSA will formally announce the probe Thursday, the official said. As of last week, NHTSA said it had collected more than 80 complaints about steering problems in 2009 and 2010 Corollas.
Many of the complaints involve the car drifting at high speeds. Other owners complain of other issues including steering wheel vibrations or exaggerated motions from small steering inputs.
On Thursday morning, a Toyota rep said the company is "aware of [the] complaints ... and are actively investigating the issue. While we have not received official notification from NHTSA, we will certainly cooperate fully with any NHTSA investigation. We're committed to being responsive to our customers."
The Corolla is Toyota's second most popular model, after the Camry.
It's the latest in a spate of recent problems for Toyota (TM), which has recalled more than 8.1 million vehicles worldwide for issues including sticking accelerator pedals.
The automaker's reputation has felt the blow, as sales lag following the massive recalls.
Earlier Wednesday, in Japan, Toyota President Akio Toyoda addressed reporters for the third time in two weeks. He pledged tighter safety controls but said he will not appear before U.S. lawmakers at hearings to be held next week.
The Associated Press reported that at the Japan press conference, Toyota's executive in charge of quality controls said it was still uncertain if a Corolla recall was necessary, but that it was an option the company was considering.
Berkshire Hathaway CEO Warren Buffett released his 50th annual letter to shareholders. The Oracle of Omaha thinks the next 50 years will be great and knows who will replace him. More
Potential presidential candidate says that improvement in unemployment rate is due to millions of jobless not being counted. More
These people say they've already finished watching all 13 episodes of the new season of 'House of Cards.' More
A social media frenzy about the color of a dress is bringing fame and fortune for one small British fashion company. More