Nissan Motor Co said on Friday it would expand an investigative recall in certain U.S. regions to replace air bags made by Takata Corp (7312.T), adding about 45,000 Sentras from the 2004-2006 model years that weren’t included previously. Japan’s second-largest automaker has informed the U.S. National Highway Traffic Safety Administration about its plans to replace passenger-side air bags of the affected Sentras, a spokesman said.