I GOT IN MY CAR, BUT IT IN REVERSE AND BEGAN BACKING OUT OF MY PARKING SPACE WHEN MY SUDDENLY CAR LOST POWER. THE CAR WAS IN MOTION BUT THE STEERING WHEEL AND BRAKE PEDAL LOCKED UP AND I COULD NOT STEER OR STOP MY CAR FROM GOING BACKWARDS AND I HIT A PARKED CAR IN THE PARKING DECK AT SCHOOL AS A RESULT. THE CODE ON MY DASH WAS (I) STEERING ASSIST FAIL. I TURNED THE CAR OFF AND ON SEVERAL TIMES BEFORE THE STEERING WHEEL AND BREAK RELEASED AND I WAS ABLE TO GAIN CONTROL OF THE CAR AGAIN. THIS IS THE 3RD TIME IN 2 WEEKS IT HAS DONE THIS (JAN 28, FEB 2 AND FEB 8). ALL THREE TIMES THE CAR HAS BEEN IN MOTION AND IN REVERSE GEAR. I CONTACTED FORD CORPORATE OFFICES AND THE FORD DEALERSHIP WHERE I PURCHASED THE CAR FROM AND THEY SAID THERE IS NOTHING THEY CAN DO UNLESS THE CAR DUPLICATES THE PROBLEM IN THEIR PRESENCE.