Hi!
Thx for sharing your pics!
Hmm ... interesting pin configuration. It seems like the heated seat at the drivers side is powered by the seat module and the heated seat at the passenger side is powered by the junction box.
Your X275 has the 2 bus pins (2+3) and your X279 only has the PWM pin (1 and pin5) ... I didnt thought that such a setting is possible.
About pin6 ... I'm relieved that you also have this pin. First I thought thats a function for E92/E93 ... maybe the easy entry or something ...
Your assumption that it could be the airbag deactivation light sounds quite interesting ... can we prove it somehow?
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To pin7:
I 100% agree with you ... that was my assumption, too.
So connecting it to the power supply of the seat module would be even safer because of the low power consumption
Greetings!