e85 multiple control units not responding ISTA

[philthyfool]

I had a few electrical issues like the turn signal indicators not lighting up on the dash and such.... I finally disconnected the airbag control ecu under the center console between the seats which seemed to solve most of my problems even though it didn't appear rusted as other people I've seen have issues with it. However, when I run ISTA there are like 6 control units not responding. The control unit tree looks like a sad christmas tree. The radio unit says it isn't communicating, but the radio works fine... It is aftermarket so I don't know if that's a thing. Is something royally screw up with my k-bus? I'm not really sure where to start looking for the cause of this. Any guidance would be greatly appreciated.

[MIKYZZ4]

I'm pretty sure that the OEM radio is integral to the BUS system, aftermarket won't do.
Do some research, Google "BMW BUS System E85"