The Acura TSX is an entry-level luxury car manufactured by Acura. Introduced in April 2003 as a 2004 model, it was sold only in the United States and Canada, but since the 2009 model year it has also been available in Mexico. It is also sold in Guam and Puerto Rico. It is sold in North America under the Acura luxury marque, where it filled the gap as Acura's 4-door, entry-level sedan when the Integra sedan was discontinued in 2001.Some model years of Acura TSX have onboard programming for keyless entry remote fob smart keys, meaning you can program with no special equipment other than instructions, while others will require special equipment to program a keyless entry remote fob smart key.