Ensure that you have notify=1 in your config.ini.
Ah, that must have been the reason, then. I don't have notify=1.

This was NOT it. I added [output] notify=1 to my config.ini, I now see the FIDs in the Vital Signs screen so I know it's working, but the bass increase is still NOT PRESENT in the output after a reboot in the car.

Note that it works correctly after a reboot in the house, it's only in the car that I notice this behavior.

And mark, what about the dimmer code? I have a long trip at night to take this weekend.