I purchased the Tesla Mold S with Autopilot feature in August 2018, then upgraded it to Full Self Driving for $5,000 and got it through a software update at the end of 2021. But this FSD feature has many defects such as hesitating before turning or stopping at a sign, which makes the car swing around like a drunk; Sometimes it doesn't turn the turn signal on when changing the line, and even enters into the reverse lane. If the above problems can be taken over by switching human drive to avoid accidents, phantom braking is a terrible safety problem that can not avoid accidents. There have been many times in which the vehicle suddenly decelerated and braked without warning while driving by FSD. Fortunately, the rear vehicle did not follow too close or the rear driver took deceleration measures in time to avoid rear-end collisions. But on January 5 this year, not so lucky, I was just out of the Tesla services center of Berkeley, my vehicle under SFD to the Ninth Street and Gilman Street intersection and is turning left from north to the east after the green light on, but the phantom braking happened when driving road central, the vehicle behind me didn't react and bumped into my car. The rear-end collision not only caused serious damage to the vehicle but also caused very discomfort in the driver's neck from the violent vibration of the collision. Although the accident was dealt with by the insurance companies of both parties and the damaged body was repaired in the Bodyshop des