2019 BMW 640XI Forward Collision Avoidance Warnings Problems

2019 BMW GT640I ON THREE DIFFERENT OCCASIONS HAS STOPPED ABRUPTLY. 1) ON THE FREEWAY DRIVING MY VEHICLE STOPPED AS IF I HIT SOMETHING CAR RESTARTED SECONDS LATER. 2) DRIVING DOWN THE STREET VEHICLE CONTROL PANEL STATED OBSTRUCTION BUT NOTHING WAS AROUND THE VEHICLE, VEHICLE STOPPED WOULD'NT MOVE FORWARD OR BACKWARD HAD TO TURN VEHICLE OFF AND RESTART TWICE. 3) DRIVING MADE A LANE CHANGE AND VEHICLE STOPPED/BREAKING ABRUPTLY NO OTHER VEHICLE IN CLOSE PROXIMITY. THIS IS A SAFETY HAZARD AND I FEAR FOR MY FAMILY AND OTHER DRIVES SAFTEY I HAVE REPORTED IT TO THE DEALERSHIP AND THIER SERVICE DEPARTMENT THEY SAID NOTHINGS WRONG BUT ASKED DURING THE INSPECTION WAS THE VEHICLE EVER IN AN ACCIDENT I TOLD THEM KNOW ITS A BRAND-NEW VEHICLE, I ASKED WHY HE MADE THAT STATEMENT HE SAID IT APPEARS TO HAVE EXTRA PAINT OR SOMETHING ON ONE OF THE SENSORS.