The U.S. sales arm of Toyota Motor Corp. says it will repair an additional 1.09 million vehicles to reduce the risk of gas pedals getting stuck, including being lodged under loose floor mats, and causing sudden acceleration.

The move will expand what is already Toyota's largest U.S. recall to 5.35 million vehicles, the latest in a string of safety issues that have badly eroded the auto giant's long-held reputation for top quality.

The additional models subject to the recall are the 2008-2010 Highlander, 2009-2010 Corolla, 2009-2010 Venza, 2009-2010 Matrix and the 2009-2010 Pontiac Vibe, a compact produced at a former joint venture plant with General Motors Corp. in California.

The expansion, announced Wednesday, came a day after Toyota said it will suspend sales of eight models, including its popular Camry and Corolla models, involved in a separate U.S. recall of around 2.3 million vehicles to fix potentially defective accelerator pedals.