2018 NISSAN MAXIMA Vehicle Speed Control Problems

SHOW ME WARNING OF OBSTRUCTION ON RADAR FOR EMERGENCY BRAKE

I WAS DRIVING IN THE RIGHT LANE ON A FOUR LANE INTERSTATE HIGHWAY WITH GOOD DRIVING CONDITIONS AND A 70 MPH SPEED LIMIT. THE CAR WAS AN ENTERPRISE RENTAL. ADAPTIVE CRUISE CONTROL USES THE ACCELERATOR AND BRAKES TO MAINTAIN A SAFE DISTANCE TO THE CAR AHEAD. IT IS DONE BY SENSING THE DISTANCE TO THE CAR AHEAD AT ABOUT 5 CAR LENGTHS THEN ADJUSTING THE ACCELERATOR AND BRAKES AS NEEDED TO MAINTAIN THIS SPACING AND AVOID A REAR END COLLISION. THE FAULT IS SEEN IN CHANGING LANES. THE CRUISE WAS SET AT 70 MPH AND MY CAR APPROACHED A CAR AHEAD GOING 65 MPH. MY CAR'S ADAPTIVE CRUISE DECELERATED TO 65 MPH. I STEERED INTO THE NEXT LANE, AND THE SPACE WAS NOT THE REQUISITE 5 CAR LENGTHS, THE CAR SENSED A CAR CLOSER THAN 5 LENGTHS REDUCING MY SPEED TO LESS THAN 65 MPH. MY CAR WAS NOW SLOWING...