That's the one. I made a typo.
Below are the relevant codes from my CAS (copy and pasted this time
CAS -- all door's unlock when using FB
I'm guessing that SEL is short for SELEKTIV (selective) and by activating a specific sender, that door is unlocked. I don't know why 3 and 4 are aktiv, however, since all my doors unlock. But #1 is the one that changes when I want only my driver's door to open.
I'm glad to help. That's what the community is for.
How'd that file comparison go?