Feds probing Prius brakes

By Chris Isidore, senior writer


NEW YORK (CNNMoney.com) -- The National Highway Traffic Safety Administration announced Thursday it is opening a formal investigation into problems with the braking system of Toyota's Prius hybrid.

Toyota has yet to announce a recall of the Prius, it's fourth-best selling vehicle model in the United States and the best-selling model in Japan. But it has admitted to a software glitch that is causing problems with its braking. It said it is looking further at the best way to repair the problem.

The investigation involves only 2010 model year Prius hybrids, which went on sale in the middle of last year. There are only 37,000 of those vehicles on the road, according to the agency.

The Prius, which is built in Japan, is not one of the eight models that was affected by two recalls recently to fix problems with sticking gas pedals. All of those models were built at North American plants.

NHTSA said its Office of Defects Investigation has received 124 reports from consumers about problems with the Prius brakes, including four reports that involved crashes and two which resulted in injuries. No fatalities have been reported. Investigators have spoken with consumers and conducted preliminary field work.

Late Wednesday, U.S. Transportation Secretary Ray LaHood spoke with Toyota (TM) president, Akio Toyoda, who reassured him that Toyota takes U.S. safety concerns seriously and puts safety at the top of the company's priorities, according to NHTSA's statement.

Toyota had only limited comment on the probe.

"We have heard about NHTSA's intention to begin an investigation. Toyota will cooperate fully with NHTSA's investigation," the company said in a statement.

Even if the solution ends up being a relatively simple and inexpensive software adjustment, the Prius braking problems come at a bad time for Toyota, which has seen its prized reputation for quality and safety badly damaged by the recalls and the news attention given to them.

The company has estimated that the problem with the gas pedals will cost it about 100,000 sales this year, and $2 billion in repair costs and lost revenue.

Other experts say the problem could be more long-lasting if consumers who once trusted the Toyota brand decide to shop elsewhere.

Toyota said Thursday that the Prius problem is a "disconnect" in the vehicle's complex anti-lock brake system that causes less than a one-second lag before the brakes start to work. At 60 mph, though, a vehicle will have traveled nearly another 90 feet before the brakes begin to take hold.

The company also said it changed the braking system software in January for vehicles built since then. But it has yet to determine how to fix the brakes of vehicles already on the road.

-- CNN's Kyung Lah and CNNMoney.com's Peter Valdes-Dapena contributed to this report To top of page

Frontline troops push for solar energy
The U.S. Marines are testing renewable energy technologies like solar to reduce costs and casualties associated with fossil fuels. Play
25 Best Places to find rich singles
Looking for Mr. or Ms. Moneybags? Hunt down the perfect mate in these wealthy cities, which are brimming with unattached professionals. More
Fun festivals: Twins to mustard to pirates!
You'll see double in Twinsburg, Ohio, and Ketchup lovers should beware in Middleton, WI. Here's some of the best and strangest town festivals. Play
Index Last Change % Change
Dow 17,804.80 26.65 0.15%
Nasdaq 4,765.38 16.98 0.36%
S&P 500 2,070.65 9.42 0.46%
Treasuries 2.18 -0.03 -1.27%
Data as of 10:48am ET
Company Price Change % Change
Bank of America Corp... 17.62 0.09 0.51%
Apple Inc 111.78 -0.87 -0.77%
General Electric Co 25.62 0.48 1.91%
Intel Corp 36.37 -0.65 -1.76%
Microsoft Corp 47.66 0.14 0.29%
Data as of Dec 19

Sections

New York Magazine reporter Jessica Pressler, who has been caught up in controversy this past week, will not be moving on to a new job at Bloomberg News. More

Investors beware: These 5 global crises are likely to rattle the stock market and world economy. More

Forums in dark corners of the web sell the kinds of hacks that befell Sony. More

Unilever sued Hampton Creek over its egg-free mayonnaise spread Just Mayo. But the company behind Best Foods and Hellman's mayonnaise has now dropped the lawsuit. More

The income of the top 1% jumped significantly in 2012, far outpacing inflation. Not only did this group make a larger share of the country's income, their share of total taxes also jumped from 35% to 38%. More

Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer.

Morningstar: © 2014 Morningstar, Inc. All Rights Reserved.

Factset: FactSet Research Systems Inc. 2014. All rights reserved.

Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved.

Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor’s Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2014 and/or its affiliates.