So I was driving home today. I came to a stop sign in which I had to stop pretty quickly and I noticed when I hit the brakes my brake light came on on the dash. For a minute I thought I left the parking brake on but it was off. Now whenever I press the brake pedal hard it comes on. I don't feel a loss in braking power? Am I loosing brake fluid or could the sensor be bad? Maybe the parking brake is going on?