The Park Avenue was Buick's flagship sedan from 1975 to 1990 as a trim level on the full size Buick Electra and as a distinct model from 1991 to 2005, succeeding the Electra entirely. Its name pays homage to the affluent Park Avenue New York City boulevard of the same name. Some model years of the Buick Park Avenue 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 of the Buick Park Avenue are not onboard programmable and require special equipment in order to program the keyless entry remote fob smart key.