Thanks for the info, that's a good write up and should be included in the mechatronic sleeve DIYs. It sounds manageable but at this point (and outside temperature) I'm throwing in the towel.
I called the dealer and my Indy mechanic to compare prices, and the dealer service advisor claimed that a computer reset is necessary after replugging the transmission. This is the first I've heard of that, can you confirm?
It's pretty disappointing that I couldn't get this job done. The complexity and packaging in these cars are getting beyond my skill level, and scared of the next generation tire valve stems that require headliner removal before checking the tire pressure.