VSC TRACK SYSTEM ACTIVATES UNEXPECTEDLY UNDER NORMAL DRIVING CONDITIONS PRODUCING A VERY LOUD GRINDING NOISE OF THE FRONT BRAKES AND FOR ABOUT 15-30 SECS THE BRAKES WON'T WORK. THIS PROBLEM CAUSES THE STEERING SYSTEM TO SUDDENLY PULL TO THE RIGHT SIDE WITH A SIGNIFICANT REDUCTION OF SPEED. EXTREMELY DANGEROUS WHEN IT HAS HAPPENED ON HIGH TRAFFIC VOLUME HIGHWAYS. REPORTED THIS SITUATION TO TOYOTA CORP. AND THEY REPLIED THAT THEY DON'T HAVE ANY CAMPAIGN OR RECALL FOR THE CONDITION DESCRIBED. TOYOTA CUSTOMER EXPERIENCE PROVIDED ME WITH INCIDENT NO. XXXXXX-XXX303 FOR MY COMPLAINT REPORT. IT IS WORTH TO MENTION OF THE HUNDREDS OF SEQUOIA OWNERS COMPLAINING OF THIS PROBLEM ON SOCIAL MEDIA WEBSITES FOR VEHICLE COMPLAINTS AND YET NOTHING HAS BEEN DONE BY TOYOTA. *TR