A top-selling Toyota Camry is on display in a Richmond, Va., showroom. Toyota Motor Corp. will replace accelerator pedals on 3.8 million recalled vehicles in the U.S. to address potential problems with the pedals becoming jammed by the floor mats. (Steve Helber/Associated Press)

Toyota Motor Corp. will replace gas pedals on 3.8 million recalled vehicles in the United States to address problems with sudden acceleration or the pedal becoming stuck in the floor mat, The Associated Press has learned.

As a temporary step, Toyota will have dealers shorten the length of the gas pedals beginning in January while the company develops replacement pedals for their vehicles, the Transportation Department said in a statement provided to the AP.

New pedals will be available beginning in April, and as a precaution some vehicles will have brake override systems installed that cut engine power if the accelerator and brake pedals are pressed at the same time.

Toyota, the world's largest automaker, was expected to provide more details Wednesday on the fix. The Japanese automaker announced the massive recall in late September and told owners to remove the driver's side floor mats to prevent the gas pedal from potentially becoming jammed.

Toyota Canada has not yet announced if it will follow suit in replacing the gas pedals, but the Canadian subsidiary of the Japanese automaker in September did follow the U.S. in issuing a recall for the problematic floor mats.

Popular vehicles such as the Toyota Camry, the top-selling passenger car in America, and the Toyota Prius, the best-selling gas-electric hybrid, are part of the recall. It includes the 2007-10 model year Camry, 2005-10 Toyota Avalon, 2004-09 Prius, 2005-10 Toyota Tacoma, 2007-10 Toyota Tundra, 2007-10 Lexus ES350 and 2006-10 Lexus IS250/350.

On Tuesday, Toyota announced a recall of 110,000 Tundra trucks from the 2000-03 model years to address excessive rust on the vehicle's frame.

4 died after pedal became stuck

The recall involving the accelerators was Toyota's largest in the U.S. It was prompted by a high-speed crash in August involving a 2009 Lexus ES350 that killed a California Highway Patrol officer and three members of his family near San Diego.

The Lexus hit speeds exceeding 190 km/h, struck a sport utility vehicle, launched off an embankment, rolled several times and burst into flames.

Investigators with the National Highway Traffic Safety Administration determined that a rubber all-weather floor mat found in the wreckage was slightly longer than the mat that belonged in the vehicle, and could have snared or covered the accelerator pedal.

The U.S. government has attributed at least five deaths and two injuries to floor mat-related unintended acceleration in the Toyota vehicles and has received reports of more than 100 incidents in which the accelerator may have become stuck.

A Massachusetts-based safety consultant who has investigated the Toyota cases, however, has found more than 2,000 incidents involving 16 deaths and 243 injuries potentially tied to the Toyota gas pedals.

To fix the problem, Transportation officials said dealers will shorten the length of the accelerator pedal on the recalled vehicles and in some cases remove foam from beneath the carpeting near the pedal.

They said owners of the ES350, Camry and Avalon would be the first to receive notification because the vehicles are believed to have the highest risk for pedal entrapment.