TL*THE CONTACT OWNS A 2002 TOYOTA SEQUOIA. THE CONTACT NOTICED THAT THE STC LIGHT AND THE VSC TRACT SENSOR LIGHT ILLUMINATED AND THE FRONT END OF THE VEHICLE SHOOK VIOLENTLY WHEN HE WAS DRIVING 70 MPH. THE CONTACT PULLED OVER AND COULD FIND NOTHING WRONG. WHEN HE TURNED THE VEHICLE BACK ON, THE LIGHTS WERE STILL ON ALTHOUGH IT NO LONGER SHOOK. WHEN HE GOT OUT AND CAME BACK A COUPLE HOURS LATER, THE LIGHTS HAD TURNED OFF. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALERSHIP BUT THE DEALER COULD NOT FIND ANYTHING WRONG. RECENTLY, THE LIGHTS ILLUMINATED MORE FREQUENTLY AND SOMETIMES THE VEHICLE SHOOK AND OTHER TIMES, IT DID NOT. THE VEHICLE WAS TAKEN BACK TO THE DEALERSHIP BUT THE DEALER STILL COULD NOT FIND ANYTHING WRONG. THE FAILURE CONTINUED. THE VEHICLE WAS TAKEN BACK TO THE DEALERSHIP WHERE THE CONTACT WAS INFORMED THAT THE YAW SENSOR WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED AT THE DEALERSHIP. THE MANUFACTURER HAD NOT BEEN NOTIFIED. THE CURRENT MILEAGE WAS APPROXIMATELY 142,000. THE FAILURE MILEAGE WAS APPROXIMATELY 30,000. UPDATED 01/26/11*LJ UPDATED 04/13/11