Pulled the FRM.
No visible water damage to pins or the board.
Still no fog lights and adaptive headlight warning comes on after a few turns.
Time to start looking at relays and fuses for the fog lights.

I'm under the impression that if at least one headlight goes through the calibration procedure, the signal(s) from the FRM are assumed to be fine and I can remove the non-working headlight and plug it in to the working headlight to test the components within?