Q Is there some warning that lets me know my car has the problem?
A Don't expect any warning light to go off. You might notice that the pedal is getting harder to depress over time or is sluggish when you ease off the gas. Some drivers might notice a rough or "chatter"-like feeling depressing the accelerator, according to Toyota. Rik Paul, automotive editor of Consumer Reports magazine, said drivers should take the car to the dealership if pressing the gas pedal starts to feel rougher or if the pedal does not fully return to its regular position.
Q What should a driver do if a car suddenly accelerates?
A This can happen to any car, not just Toyotas, Paul said. Test-track drivers found the most effective strategy was to hit the brake pedal hard and hold it. Don't pump or pound on the brakes. That kills the vacuum assist and makes them less effective. Toyota advises stepping on the brake pedal with both feet, using firm and steady pressure. After hitting the brakes, shift the transmission to neutral, pull safely off the road, turn off the car and park it.
Q What's wrong with the vehicles?
A Toyota said the accelerator pedal on the affected models can stick in a partially depressed position. It also can be slow to rise back up when you ease off the gas. In addition, Toyota said, in some cases, vehicle floor mats can become entangled with the accelerator pedal, trapping it down.
Q What causes the problem?
A Toyota said the accelerator pedals become worn over time. They develop friction, which causes the pedals to stick or return slowly after a driver removes pressure from the gas pedal. Some auto experts have pointed to Toyota's electronic throttle control system as a possible cause.