Toyota Motor Corp. said Wednesday it will replace the accelerator pedals on 3.8 million vehicles involved in the company's largest recall ever.

The models involved are:

-- 2007 to 2010 model year Camry

-- 2005 to 2010 Avalon

-- 2004 to 2009 Prius

-- 2005 to 2010 Tacoma

-- 2007 to 2010 Tundra

-- 2007 to 2010 Lexus ES 350

-- 2006 to 2010 Lexus IS 250

-- 2006 to 2010 Lexus IS 350. The company said it will reconfigure the shape of accelerator pedals to cut down on the risk that they may be jammed in the floor mat.

In addition, it will replace original equipment floor mats with redesigned mats.

In addition, Toyota will install a brake override system on the involved Camry, Avalon, and Lexus ES 350, IS 350 and IS 250 models “as an extra measure of confidence.'' The system will shut off engine power if drivers press the accelerator pedal and brake pedal simultaneously.