The Chrysler PT Cruiser is a retro styled compact automobile launched by Chrysler as a 5-door hatchback in early 2000 (for the 2001 model year) and as a 2-door convertible in early 2005 (added to the 2005 model lineup). On July 9, 2010 the PT Cruiser ended production. Some model years of the PT Cruiser 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. However, other model years are not onboard programmable and require special equipment in order to program the keyless entry remote fob smart key.