While driving through town at approximately 30-35 mpr the red brake light flashed on and the brakes slammed hard. There was nothing in front of me or approaching from the sides. My child and I were jolted as if in an accident. Luckily the car behind me did not rear end me. I did call and report it to my dealer and have scheduled an appointment for diagnosis. I once had the brake light flash on while on the highway but the brakes only slightly gripped.