The Saturn Ion was a compact car sold by the Saturn marque of American automaker General Motors between the 2003 and 2007 model years. The Ion replaced the Saturn S-Series in 2003, and was replaced by the new Saturn Astra in 2008. Production of the Ion ended on March 27, 2007. Saturn Ion models are not on board programmable and require special equipment in order to program the keyless entry remote fob smart key for this vehicle.