2011 CHRYSLER SEBRING Steering Problems

MY THROTTLE CONTROL LIGHT AS WELL AS MY CHECK ENGINE LIGHT CAME ON IN MY CAR. I CALLED THE DEALERSHIP AND THEY TOLD ME IT WAS SAFE TO DRIVE AND IT WAS DUE TO COLD WEATHER. THEY MADE AN APPT. FOR ME TO COME IN A WEEK LATER. A FEW DAYS AFTER I CALLED THEM ABOUT THE LIGHTS BEING ON IN MY CAR I WAS PULLING OUT OF A CONVENIENT STORE INTO ON COMING TRAFFIC WITH MY DAUGHTER IN THE CAR ON A BUSY ROAD, I WAS GOING TO TURN RIGHT WHEN MY STEERING WHEEL LOCKED UP AS WELL AS THE BREAKS AND CARS WERE COMING AT US AT 40MPH. MY CAR KEPT ROLLING INTO THE OTHER LANE OF TRAFFIC. I HAD TO PULL THE E-BREAK TO TRY TO STOP ROLLING. I BLOCKED TRAFFIC AND COULD NOT MOVE MY CAR. WHEN I PUT IT IN REVERSE AND DRIVE NOTHING HAPPENED....