WHILE DRIVING 60 MPH DIFFERENTIAL LOCKED UP. THIS CAUSED THE VEHICLE TO VEER OFF INTO A FIELD AND HIT A FENCE. CONSUMER HAD THE VEHICLE TOWED TO THE DEALER FOR ANALYSIS, AND MECHANIC NOTICED THAT THE DIFFERENTIAL WAS WORN OUT AND NEEDED TO BE REPLACED. *AK THE BEARING(S) WERE BURNT AND THERE WAS A FLUID LIKE SLUDGE AS A RESULT OF THE HEAT. *SC