I might be ignorant of how OBD works, but it seems significant that the EME ECU didn't report errors until
after the shop's work.
- The two separate dealer shops would've had to miss it.
- I have a BimmerLink app report that listed no errors from the EME ECU on the night of the initial A/C failure.
Then
after the shop's work, BimmerLink shows many EME ECU errors (below), which to my untrained eye say, "blown EME fuse."
But I don't know if it's futile to try to second-guess the dealer's work like this, even if they *did* blow the fuse in the course of their work.
I intend to get some professional advice on that question this week.
(BTW, I really appreciate your advice and thoughtful input on the actual problem, DrVenture. I will certainly follow it if/when I run out of easier options.)
