NHTSA Complaint #10451677 — 2011 BMW 535XI

THIS VEHICLE IS EQUIPED WITH ACTIVE CRUISE CONTROL TO MAINTAIN A SAFE DISTANCE FROM THE VEHICLE IN FRONT OF IT. WHEN PASSING TO THE LEFT OF A LARGE TRUCK (THIS HAS NOT OCCURRED WHEN PASSING SMALLER VEHICLES) AND WHEN THERE IS NOTHING IN THE LANE IN FRONT OF THE BMW, IT ERRONEOUSLY SENSES SOMETHING VERY CLOSE IN FRONT AND MOMENTARILY APPLIES THE BRAKES CAUSING THE VEHICLE TO SLOW 2 - 4 MPH. IT QUICKLY SENSES THAT INDEED THERE IS NOTHING IN FRONT OF IT AND RESUMES THE SET SPEED. THIS HAS ONLY BEEN NOTED DURING DAY TIME DRIVING ON DRY ROADS. IS VERY SPOADIC BUT HAS OCCURRED PERHAPS TWO DOZEN TIMES IN 7,000 MILES. THE SERVICE DEPARTMENT AT BMW HAS WITNESSED THE PROBLEM BUT IS BAFFLED AS TO THE CAUSE. *TR