1ST INCIDENT IN JANUARY 2016I WAS DRIVING ON HIGHWAY AND CONSTRUCTION BARRELL ROLLED ACROSS HIGHWAY. MY FORWARD COLLISION WARNING SYSTEM DID NOT ACTIVATE; I HAD TO HIT THE BARRELL; LOTS OF DAMAGE TO MY CAR; THE BOSCH RADAR WARNING SYSTEM IS HELD IN PLACE WITH PLASTIC AND IT BROKE OFF DURING COLLISION. 2ND INCIDENT,APRIL 2016 HIT A RUBBER CONE THAT HAD FALLEN OUT OF A TRUCK ON THE HIGHWAY. THE WARNING SYSTEM SENSOR BROKE OFF AGAIN. WHEN I PURCHASED THE CAR NEW, I PAID EXTRA FOR THE EXPENSIVE $1,000 +DRIVER ASSISTANCE PACKAGE WITH FORWARD COLLISION WARNING SYSTEM. IT HAS NOT ONLY FAILED ME TWICE, IT BREAKS EASILY BECAUSE A PIECE OF PLASTIC HOLDS IT IN PLACE. I HAVE LOOKED AROUND AND HAVE NOT SEEN ANY OTHER CARS WHERE THIS IMPORTANT SENSOR IS POSITIONED SO OPENLY AND IS SO VULNERABLE TO BEING HIT BY SMALL OBJECTS AND BREAKING AND NOT MAKING THE CAR RESPOND. THIS POORLY DESIGNED SAFETY DEVICE IS VERY FRAGILE. EVEN THE VOLKSWAGON DEALERSHIP AGREED THAT IT IS A POOR DESIGN AND THE COLLISION WARNING SYSTEM WILL ONLY WORK IF THERE IS TO BE A COLLISION WITH ANOTHER CAR. THIS IMPORTANT SAFETY DEVICE BREAKS OFF TOO EASILY. DID NOT HAVE POLICE REPORT FOR FIRST INCIDENT, BUT HAD INSURANCE CLAIM..POLICE REPORT NUMBER FOR THE SECOND INCIDENT IS 16-011613 (DURHAM, N.C.). THE PART I AM MOST CONCERNED ABOUT IS: BOSCH, RADAR SENSOR, 5Q0907561F.