Forward emergency braking (feb) system warning light issue and car is slamming on the brakes, even when there are no obstacles around: 1. driving at 65mph, light started blinking, no other observed problems. car / all sensors were clean, no obstacles. 2. after driving further (about 15 minutes) light went off by itself. 3. on a return trip the next day, while driving at 75mph, no traffic in front or rear of car, and, cruise control set, car suddenly and violently felt like someone hit the brakes. we went from 75 to 40 very quickly. no indicators on the dash were lit. this could have been fatal if someone had been behind us, because when this happens, the brakes light do not engage. this is a serious safety issue, that needs to be addressed, or the car bought back. it is no longer just a safety feature, but, could lead to death on the highway if this system acts up and stops the car without warning or even brake lights.