THE PRE-COLLISION SYSTEM DOES NOT WORK PROPERLY. THE CAR REAR ENDED THE VEHICLE IN FRONT OF IT WITHOUT WARNING AND BRAKE ASSIST BY PRE-COLLISION SYSTEM AS LEXUS CLAIMED. IT RESULTED IN AN ACCIDENT. LEXUS HAS PERFORMED THE INVESTIGATION AND EXTRACTED DATA FROM EDR. THEY CONCLUDED NO DEFECT FOUND. I STILL BELIEVE THAT THE CAR PRE-COLLISION SYSTEM DID NOT WORK AT ALL AND WAS NOT ABLE TO PREVENT THE COLLISION AS EXPECTED.