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John Gomez, attorney for driver James Sikes, talks about his client's experiences during an interview held Sunday, March 14, 2010 in San Diego.

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Toyota casts doubt on runaway Prius

Government can't duplicate acceleration

Updated: Monday, 15 Mar 2010, 4:01 PM EDT
Published : Monday, 15 Mar 2010, 10:33 AM EDT

WASHINGTON (AP) - Toyota cast doubt Monday on a California man's claim that his Prius sped out of control, saying the report is inconsistent with the findings of the company's preliminary investigation.

Toyota said in a statement that the accelerator pedal was tested and found to be working normally and a backup safety system worked properly. The automaker said the front brakes showed severe wear and damage from overheating, but the rear brakes and parking brake were in good condition.

The motorist, James Sikes, said his car raced to 94 mph on a freeway near San Diego last week. The March 8 incident ended when Sikes stopped the car with help from a California Highway Patrol officer.

"While a final report is not yet complete, there are strong indications that the driver's account of the event is inconsistent with the findings of the preliminary analysis," the statement said.

Other details of Toyota's examination of the vehicle were being released at a press conference in San Diego.

Earlier in the day, federal regulators said they were reviewing data from the gas-electric hybrid but so far had not found anything to explain the out-of-control acceleration reported by Sikes.

"We would caution people that our work continues and that we may never know exactly what happened with this car," the National Highway Traffic Safety Administration said in a statement.

Inspectors said they tried to duplicate the acceleration during a two-hour test drive but could not.

Sikes has said the car sped up to 94 mph on a freeway near San Diego. He said he jammed on the brakes trying to stop it.

Sikes called 911, and a highway patrol officer helped bring the vehicle to a safe stop. Though no one was injured, the episode quickly becoming a high-profile headache for Toyota, which like NHTSA sent in an engineering team to investigate.

John Gomez, an attorney for Sikes, said the failure to recreate the incident was insignificant and not surprising.

"They have never been able to replicate an incident of sudden acceleration. Mr. Sikes never had a problem in the three years he owned this vehicle," he said Sunday.

But Rep. Darrell Issa, R-Calif., suggested the failure to duplicate the stuck accelerator, and the presence of a backup system in the car, raised questions about Sikes' story.

"It doesn't mean it didn't happen, but let's understand, it doesn't mean it did happen," Issa said on CBS' "The Early Show."

NHTSA is looking into claims by more than 60 Toyota owners that their vehicles had accelerated unexpectedly even after they were supposedly fixed.

Regulators said in a statement that Sikes' Prius was equipped with a backup safety device that reduces power to the wheels when the brakes and gas are pressed at the same time.

"The system on Mr. Sikes' Prius worked during our engineers' test drive," the statement said.

While investigators from Toyota and NHTSA reviewed the Prius during the same two days, a Transportation Department official said their investigations are separate.

"It does not appear to be feasibly possible, both electronically and mechanically that his gas pedal was stuck to the floor and he was slamming on the brake at the same time," said a memo prepared for Congress that cited a Toyota official.

Toyota has recalled millions of cars because floor mats can snag gas pedals or accelerators can stick. Sikes' car was covered by the floor mat recall but not the one for sticky accelerators. He later told reporters that he tried to pull on the gas pedal during his harrowing ride, but it didn't "move at all."

Krisher reported from Detroit. Associated Press Writer Ken Thomas in Washington contributed to this report.

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In Washington, the National Highway Traffic Safety Administration said its engineers continue to investigate and are reviewing data from the Prius owned by James Sikes to try to understand what led to last week's high-speed incident. But so far, NHTSA says it has not been able to find anything to explain what Sikes reported.

"We would caution people that our work continues and that we may never know exactly what happened with this car," NHTSA said in a statement.

Inspectors tried during a two-hour test drive to duplicate the acceleration, but couldn't do so.

Sikes called 911 last Monday to report losing control of his Prius as the hybrid reached speeds of 94 mph. A highway patrol officer helped bring the vehicle to a safe stop. Though no one was injured, dramatic footage of the incident captured by local television stations captivated the nation, quickly becoming a high-profile headache for Toyota, which like NHTSA sent in an engineering team to investigate.

John Gomez, an attorney for Sikes, said the failure to repeat the incident is insignificant and not surprising.

"They have never been able to replicate an incident of sudden acceleration. Mr. Sikes never had a problem in the three years he owned this vehicle," he said Sunday.

But Rep. Darrell Issa, R-Calif., suggested the failure to duplicate the stuck

accelerator, along with a vehicle design to prevent such occurrences, raises questions about Sikes' story.

"It doesn't mean it didn't happen, but let's understand, it doesn't mean it did happen," Issa said on CBS' "Early Show."

Toyota Motor Corp. planned to announce preliminary findings of its investigation at a news conference Monday in San Diego.

NHTSA is looking into claims from more than 60 Toyota owners that their vehicles continue to accelerate unexpectedly despite having their vehicles repaired.

Technicians with the NHTSA and Toyota could not duplicate what Sikes said he experienced March 8 on a mountainous but lightly traveled stretch of Interstate 8 east of San Diego, according to a congressional staffer's memo prepared for the House Committee on Oversight and Government Reform.

"Every time the technician placed the gas pedal to the floor and the brake pedal to the floor the engine shut off and the car immediately started to slow down," the memo read.

According to the memo, a Toyota official who was at the two-day inspection last week in suburban San Diego explained that an electric motor would "completely seize" if a system to shut off the gas when the brake is pressed fails, and there was no evidence to support that happened.

"In this case, knowing that we are able to push the car around the shop, it does not appear to be feasibly possible, both electronically and mechanically that his gas pedal was stuck to the floor and he was slamming on the brake at the same time," according to the memo.

Toyota has recalled millions of cars because of floor mats that can snag gas pedals or accelerators that can sometimes stick. Sikes' car was covered by the floor mat recall but not the one for sticky accelerators. He later told reporters that he tried to pull on the gas pedal during his harrowing ride, but it didn't "move at all."

The Prius is powered by two electric motor-generators and a small gasoline engine, all connected by transmission gears. A computer, which Toyota calls the "hybrid control computer" determines what combination of motors is needed and which would be most efficient.

Craig Hoff, a professor of mechanical engineering at Kettering University in Flint, Mich., said that for the Prius to accelerate out of control, at least two systems would have to fail simultaneously. They are the sensor signal that tracks the brake and gas pedal positions when the driver presses on them and the hybrid control computers.

"The chance of them both going wrong, plus the fact that the signal is bad, it just seems very, very, very remote," Hoff said. "Could it happen? Statistically, yes. But it just doesn't seem very likely."

Several events usually combine to cause problems with cars, and it's difficult to reproduce them, Hoff said.

"It's going to make it really hard to find, because you've got to line up the multiple effects," he said.

The congressional memo said both the front and rear brakes were worn and damaged by heat, consistent with Sikes saying that he stood on the brake pedal with both feet and was unable to stop the car. But if the fail-safe system worked properly, the brakes wouldn't have been damaged because power would have been cut to the wheels.

Gomez said the best evidence that his client was frantically slamming the brakes is that a California Highway Patrol officer who was giving Sikes instructions over a loudspeaker smelled burning brakes and saw the lights on.

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Spagat reported from San Diego. AP Auto Writer Tom Krisher contributed to this report from Detroit.

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