Federal safety regulators at the National Highway Traffic Safety Administration say they are "aware of" complaints of runaway acceleration in the popular Toyota Prius hybrid and are in a "monitoring mode."
"It is currently like dozens, or maybe hundreds, of other issues of this kind," an agency official said.
The Toyota Product Communications office has not responded to several requests from ConsumerAffairs.com to discuss the issue of unintended acceleration in the Prius.
Prius owners in the meantime continue to encounter incidents of unintended acceleration with the hybrid and the Japanese automaker seems unable to remedy the problem.
In a new wrinkle, one Prius owner whose hybrid was damaged in an unintended acceleration accident reports that her Toyota dealer is unwilling to accept the Prius in trade for another vehicle, even though the hybrid is almost new.
In Burnet, Texas, Janet slammed into a garage wall with her 2007 Prius.
I was pulling into my garage. Suddenly my Toyota Prius accelerated out of control and drove into the wall of the garage damaging my nerves, the car and the wall, she told ConsumerAffairs.com.
Janet's husband thought his wife was the cause of the accident.
My husband, thinking it was user error put the car in reverse and it accelerated again out of control, she said. We bought the Prius as our retirement car. My husband and I are 70 plus and have found ourselves without a car until someone can find what is happening.
They say it can't even be traded in, Janet told us.
Janet has reported the unintended acceleration problem to Toyota with no response.
I am very frightened of the car what if I had been approaching a group of pedestrians, Janet asked?
Similar reports
About the same time that Janet was crashing into a garage wall with her Prius, Lois in Las Vegas was wrestling with her 2005 Toyota hybrid's tendency to accelerate suddenly.
It has hesitated several times on me. This last time I almost got in an accident. It chugged along several times in a row. No lights went on. It has 99,000 miles and has a warranty to 100,000 miles. It has bee at the Toyota dealership 5 days. they cannot find any problems Lois said.
On August 22, Dan in San Dimas, California reported a similar Prius problem.
I was almost stopped for a red light, my foot was on the brake (NOT on gas), the car was surging forward being held back by brakes. I quickly checked for anything under the accelerator including the floor mat, foot on the gas, or any other cause. All were negative.
Dan pulled into a gas station on the corner with the engine still revving at maximum rpms. He turned the Prius off, double checked for external causes and found none. He then turned the hybrid back on and it behaved normally, Dan told us.
When Dan reported the unintended acceleration problem to his Toyota dealer, he said there was a service bulletin on the 2004-2005 models but not on the 2006. He offered to re-flash the computer. Dan told us.
Karen in Los Gatos, California has a 2007 Prius she has driven since December of 2006.
After driving the car approximately 1,000 miles, Toyota Prius hybrid had an uninitiated full-throttle acceleration while driving on an expressway, she told ConsumerAffairs.com.
Startled, I slammed on the brakes. The accelerator fought my braking as I pulled over and turned off the car, shocked and taking a deep breath, Karen wrote us.
Karen did not think about the problem with unintended acceleration again until it happened with about 13,000 miles on the odometer.
I had been stopped at a traffic light. It changed to green and I started to move forward. The Prius took off charging toward the car in front of me. Standing on the brakes, I pulled over and turned off the car. Very frightened, I sat wondering what I should do next. What happens if I turn the car on and it takes off again? she asked herself.
Karen said that all was normal when she re-fired the hybrid engine.
I called Toyota and talked to a sales person and explained this dangerous experience. He confirmed that he was familiar with the problem and also experienced this himself when driving one of the earlier models of the Prius, Karen wrote.
No floor mats
She took the runaway Prius to her Toyota dealer and listened as the service manager blamed everything that has occurred on nothing more than a floor carpet jamming accelerator pedal.
As I explained to him, I didn't have floor mats when this happened the first time, Karen wrote.
A concerned friend sent Karen a link to earlier stories published by ConsumerAffairs.com.
"I forwarded the link to the owner of the Toyota dealership. He too expressed concern and asked me to keep the loaner for a few more days while they get someone for Toyota to look further into this, Karen said.
At the moment, I'm still in the dealership loaner car. They still have my Prius, Karen told us.
---Correction: Earlier versions of this story incorrectly said a NHTSA investigation had been opened.
