I'm not sure if I understand you 100%, but it seems like you are saying that the parking brake light is coming on. I don't know that the pedal brake system is linked at all to this light. I belive that this light only indicates when the parking brake is engaged. Usually, the parking brake is operated mechanically with a cable that pulls on the rear calipers. The brake fluid has no effect on the parking brake. On older cars, this cable has a tendency to rust and stay either engaged or dissengaged. This probably isn't the case with your car; it's still a baby. If the parking brake is staying engaged, you would feel it. My best guess is that the brake position sensor that is usually located in the center console has a problem. Hope I helped.