I WAS DRIVING ABOUT 30 MPH ON A BACK STREET GOING HOME AND MY STEERING LOCKED ON ME AND I GOT A MESSAGE THAT POWER STEERING SYSTEM ASSIST FAULT. I COULD NOT TURN THE WHEEL AT ALL AND THEN A MESSAGE SYSTEM ADVANTRAC POPPED UP. I HAD NO CONTROL OF THE WHEEL AND I STOPPED REAL QUICK AND RAN INTO A DITCH. THANK GOD NO ONE WAS AROUND AND DID NOT GET HURT.