WE WERE IN A THANKSGIVING DAY RELATED TOUCH N GO TRAFFIC ON A NORMAL STREET, WHICH ENTERS INTO A MALL. ALL OF US ARE STOPPED AT A RED LIGHT, CAR AHEAD OF US JUST STARTED MOVING AND WE FOLLOWED AFTER ALLOWING A SAFE DISTANCE, THEN SUDDENLY THE CAR AHEAD OF US STOPPED, SO I TRIED STOPPING QUICKLY, BUT THE CAR'S AUTOMATIC COLLISION AVOIDANCE KICKED IN AND TOOK CONTROL OF MY BRAKES, BUT IT STILL DIDNT STOP, I WAS TRYING TO STOP, BUT THE BRAKES WERE NOT WORKING. ENDED UP REAR-ENDING CAR INFRONT OF ME. THE WHOLE POINT OF THIS SAFETY FEATURE WAS TO PREVENT THE CAR FROM REAR ENDING OTHER CARS IN DAY-TO-DAY TRAFFIC SITUATIONS. ALSO OUR SPEED WAS NOT MORE THAN 20 MPH, WHEN I HIT THE GAS PEDAL, ALMOST INSTANTLY I REALIZED I HAVE TO STOP AND TOOK MY FOOT OFF THE PEDAL, TRIED BRAKING, BUT CAR KEPT ROLLING FORWARD. THIS IS JUST 4 MONTH OLD CAR WITH 2500 MILES ON IT. WAITING TO SEE HOW TOYOTA HANDLES MY CASE, IN THE MEANTIME, INSURANCE THINKS I AM AT FAULT AND STARTED THE CLAIM, COVERING THE CAR INFRONT OF ME. MY DASHBOARD DISPLAYED A "BRAKE" MESSAGE IN RED COLOR, WHICH IS TRUE, IT IDENTIFIED A COLLISION, BUT DIDNT STOP. IMO STOPPING IS MORE IMPORTANT! THERE WAS SOME DAMAGE TO CAR INFRONT OF ME, MY CAR HAD SOME MINOR DAMAGE TO GRILLS AND FRONT BUMPER AREA.