NEW YORK — Toyota is recalling 670,000 of its 2004-2009 Prius hybrids in the United States to fix problems involving the loss of steering and the hybrid powertrain shutting down, the automaker has told the National Highway Traffic Safety Administration.

The move is part of a worldwide recall of almost 2.78 million vehicles, according to the Associated Press, which quoted Toyota officials in Japan. Only the Prius is affected in the United States. Outside the United States, the recall covers the Corolla and the Wish, a small van.