I WAS IN THE MIDDLE OF A LEFT HAND TURN WHEN THE POWER STEERING WENT OUT AT APPROX 10-15 MPH - THE FAULT CODE APPEARED & ALARM SOUNDED-I HAD TO "MUSCLE" THE STEERING WHEEL TO COMPLETE MY TURN WHILE NEARLY GOING OVER THE CURB INTO A BUSINESS. MY FIRST REACTION WAS THAT THE ENGINE HAD STALLED BUT WHEN THE FAULT SHOWED AGAIN & ALARM SOUNDED THIS TIME IT WAS SHOWING THAT THE TERRAIN MANAGEMENT SYSTEM HAD FAILED. AS IT WAS A 2-3 MILE STRAIGHT ROAD TO MY FORD DEALER & I DROVE THERE. AFTER ARRIVING AT THE DEALER I SHUT OFF THE ENGINE, REPORTED WHAT HAPPENED. THE SERVICE ADVISOR STARTED THE VEHICLE & THE POWER STEERING HAD RESET. THEY PUT THE VEHICLE ON THE DIAGNOSTIC UNIT & IT SHOWED A STEERING GEAR & STEERING GEAR MODULE/COMMUNICATION SENSOR(?) NEEDED REPLACEMENT. IT WAS ORDERED & INSTALLED ON 6/18/12 & HAS NOT FAILED SENSE THEN. I MENTIONED AN INJURY - IT WAS TO MY RIGHT SHOULDER AS I HAVE A TOTAL SHOULDER IMPLANT. I HURT IT "MUSCLING" THE STEERING WHEEL TO STRAIGHTENING THE VEHICLE OUT. *TR