I'm guessing but I think the ASS is activated by a switch on the brake pedal. Before ********/Cobb, I would lightly press the pedal so the ASS wouldn't activate.
Could be the switch. Low battery makes sense too.
It monitors the brake. I have gotten it down to where when I come to a complete stop at a light, I lightly let off the brake pedal and it turns the ASS off as it doesn't see that I'm fully applying the brake. It monitors a lot off PIDS but that's one of many for sure.