But you did successfully program JS7Z15K601B correct? Because if so I wonder if I could program a key fob with the remote start button built in if it would work. Fob I'm talking about is in a link below. https://www.amazon.com/Remote-Replacement-N5F-A08TDA-164-R8134-902mhz/dp/B0B4DW8W1J/ref=sr_1_6?crid=2Y1M6MR1SQWBN&keywords=ford+remote+start+key+fob&qid=1675268351&sprefix=ford+remote+start+,aps,129&sr=8-6&th=1 Did you ever try the remotes with the built-in 2x?
