I just finished changing my alternator and drove around all day fine, except for the fact that I forgot to tightened my front right rim. But that's fixed. So I was driving around and stepped on the breaks. Those fuckers didn't work. The ebrakes work, but the pedal didn't. It was stiff and hard just like when the car is off. I have no idea how this could happen. I checked the break fluid and it's fine.