The RFID chip inside is programmed to the car when "they" order it.. the only thing left is synchronizing the fob to the car to lock - unlock.. Just like when you replace the batteries and find "fob doesn't work".. covered in the owners manual.. which can be downloaded from here if you haven't already gotten it..

Roll the key to the first position "on" for a couple of seconds.. then you can hit start.. or pull the key out and test "programming" by locking or unlocking.. you should hear the locks - pump kick in.