The Cadillac DTS (DeVille Touring Sedan) replaces the Cadillac DeVille as that carmaker's largest luxury car for the 2006 model year. The DTS follows the naming and styling direction set by the earlier CTS and STS. All model years of the Cadillac DTS have keyless entry remote fob smart keys that are onboard programmable, which means a person can program the keyless entry remote fob smart key with no special equipment other than the keyless entry remote fob smart key programming instructions.The DTS remained in production until 2011.