2012 Prius V No Response to Power Button

Hi All,

I'm working on a friend's vehicle, and we're the last resort for this dead prius thats been at another shop for a month. The story is that the vehicle was stolen (with the key still in it), driven, and then left somewhere. Before they left it, the thieves cut off the start button... We don't know why. My friend soldered the wires back together, but now there is no response to the button at all. However, there is ok voltage ~12v in the starting battery, and the power door locks work.
Code B2784 is set. They tried another button, same thing. The recertification appears to work, waveform on the CODE and TXCT circuits look like communication. The power source control module also appears to work, as live data shows that it sees the button turning on and off. I havent figured out yet how to test the INDW and INDS circuits.

What am I missing here? Even without a good key, shouldn't the dash turn on and flash an immobilizer light?