NHTSA Complaint #11649360 — 2012 TOYOTA PRIUS

My break actuator goes off every 12 seconds continuously. There is no warning sign in the dash board. Brought the vehicle to the Toyota dealership and had it checked out. The dealership says there is no problems according to their analysis. But the actuator continuously goes off every 12 seconds and the dealership said this was "normal" and charged me the service fee. I am seriously concerned because I drive this car with my child and I am reading that this is a bad sign and that the breaks might fail at any time. Since the dashboard doesn't give me a warning sign and the dealership says there's no problems based on their diagnostics, even if everyone can hear the actuator go off ever 12 seconds I guess I can safely drive this vehicle...it seems like driving a ticking disaster waiting to happen.