I WAS DRIVING HOME FROM WORK (70 OR SO MILES AWAY FROM WHERE I LIVE) AT ABOUT THE HALFWAY POINT I HEARD CAR DING AND A WARNING POPPED UP ON MY DASHBOARD SAYING "POWERSTEERING ASSIST FAULT" AND "SERVICE ADVANCETRAC" AND RIGHT AWAY I IMMEDIATELY COULD FEEL THE STEERING WHEEL BEING UNABLE TO TURN. I WAS GOING 50 MILES AN HOUR AND AS SOON AS THE WARNING POPPED UP MY STEERING WHEEL BECAME NEARLY IMPOSSIBLE TO TURN. I WENT RIGHT INTO A FIELD AS THE ROAD TURNED INTO A CURVE AND THE STEERING WHEEL WAS TOO HARD TO TURN. I WENT OFF THE ROAD AND INTO A FIELD. NO AIR BAGS WENT OFF AND I SLAMMED MY HEAD INTO THE STEERING WHEEL. AFTER THE SHOCK OF WHAT HAPPENED I SHUT MY CAR OFF AND CALLED MY FIANC CRYING FREAKING OUT AS I WAS STILL ANOTHER 40 OR SO MILES AWAY FROM HOME. MY HEAD HURT BUT I DID NOT RELIEVE MEDICAL ATTENTION. HE TOLD ME TO CALM DOWN AND HE WOULD SEE IF THERE WAS ANYTHING ON THE INTERNET ABOUT THIS ISSUE WITH MY CAR. AND HE FOUND OUT IT IS AN ONGOING ISSUE WITH MANY PEOPLE. HE TOLD ME TO LEAVE MY CAR OFF FOR A WHILE AND TURN IT BACK ON. WHEN I DID THE POWERSTEERING WORKED AGAIN AND AFTER TAKING A FEW DEEP BREATHS I WAS ABLE TO GET OUT OF THE FIELD AND RICE THE REST OF THE WAY HOME WITHOUT ANY MORE INCIDENTS THAT DAY. 2 DAYS LATER ON MAY 12TH 2015 THE POWERSTEERING FAILED AGAIN AND HAS SINCE CONTINUED TO NOT WORK. I WAS INCHES AWAY FROM GOING INTO A GUARDRAIL AT 65 MPH BEFORE I SLAMMED ON THE BREAKS AND PULLED THE WHEEL TO THE LEFT AS HARD AS I COULD TO GET AWAY FROM THE GUARD