Impulse buy: 2015 Fiesta ST

[Deceus]

The Demon did the same with the first iteration of my brake system. Decent pedal with the engine off but sunk to the floor while running. It was my brake booster but there's obviously a lot more at play here. Apparently the ABS module is another source of the problem. Silly question: but when you replaced the switch did you make sure the pedal assembly wasn't bent? Apparently that's a big problem as well.