NHTSA Complaint #10896134 — 2016 TESLA MODEL S

ON IH90 BETWEEN GILLETTE WY AND BILLINGS MT ON AUG 8, 2016 I WAS DRIVING AT 75 MPH WITH AUTOSTEER ENGAGED. THE DAY WAS CLEAR, IT WAS ABOUT 9AM, AND THE ROAD LANES WERE CLEARLY MARKED. AS I WAS GOING AROUND A MODERATE CURVE (NO SPEED REDUCTION SUGGESTED) IN THE RIGHT LANE, THE CAR SUDDENLY VEERED TOWARD THE RIGHT SHOULDER. I HAD MY HAND ON THE WHEEL, BUT THE RIGHT TWO WHEELS WENT PAST THE RUMBLE STRIP AND ONTO THE SHOULDER BEFORE I COULD BRING THE CAR BACK ONTO THE ROAD, DISENGAGING AUTOSTEER. IF AUTOSTEER HAD CONTINUED THE CONTROL THE CAR, I AM CERTAIN WE WOULD HAVE LEFT THE ROAD AT HIGH SPEED AND CRASHED THE CAR. HOWEVER, THERE WAS NO CRASH, AND WE CONTINUED ON OUR JOURNEY. I REPORTED THIS INCIDENT TO TESLA AT THE TIME IT OCCURRED. AT THE TIME WE WERE ON A 26 DAY ROAD TRIP ACROSS COUNTRY. I HAD PREVIOUSLY NOTED THAT AUTOSTEER HAD TRIED TO VEER THE CAR TO THE RIGHT, BUT NOT AS AGGRESSIVELY AS THIS INCIDENT. EACH TIME IT OCCURRED, HOWEVER, I HAD TO DISENGAGE AUTOSTEER AND TAKE BACK CONTROL OF THE CAR.