According to a story on the website, the NHTSA has issued a second consumer advisory, regarding 5 million Ford vehicles.  The original recall involved a faulty cruise control switch system, which lead to engine fires.  The specific vehicles involved in the recall include 1993-2004 Ford F-150 trucks, 1993-1996 Ford Broncos, 1994-2002 F250 through F550 Super duty trucks with gasoline engines, and 1998-2001 Ford Explorers and Mercury Mountaineer SUVs.  12 million vehicles were part of the initial recall and 5 million of those remain unrepaired.  The official NHTSA consumer advisory is here.