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When you say unplug the radio module, do you mean if you unplug the module from the screen, or if you unplug the big connector from the module? I don’t think it’s an issue AlfaOBD could fix, though.I am upgrading from 8.4 non nav to the 12. I got everything installed and the volume and tune knobs do not work as expected. The problem I have is once I shut off the truck and the screen goes off it will not turn on the next time I start the truck. The radio still plays and the SWC can adjust the volume. If I unplug the radio module and plug it back in the screen will turn on again. I have an alfaobd but I have no idea what to try to get it working correctly.
On a side note, since you have AlfaOBD, any chance you could upload your BCM system status to google drive, and share it here? I want to compare a non-nav factory truck to a 12” screen factory truck to see if I can find what the infotainment OBD genie is changing to get the volume and tune knobs to work.