AFTER DRIVING MY 2001 TOYOTA SEQUOIA SR5 4X4, 70 MPH FOR 45 MILES, THE VEHICLE MADE AN ABRUPT RIGHT HAND TURN ON ITS OWN. THE STABILITY CONTROL SYSTEM LOCKED THE FRONT RIGHT WHEEL AND CAUSED THE VEHICLE TO TURN RIGHT. LATER THAT WEEK MY MECHANIC REPLACED THE YAW SENSOR. SINCE THEN, THE TRUCK HAS BEHAVED AS EXPECTED. I JUST HEARD A FRIEND ALSO HAD A 2001 4X4 TOYOTA TACOMA AND THE SAME THING HAPPENED, ALTHOUGH HIS VEHICLE ROLLED 5 TIMES AND THERE WERE SEVERAL INJURIES. HE HAD ABOUT 135000 MILE ON HIS VEHICLE. *TR