Recently purchased a 2019 LE. So far, everything about the car is great, except the pro-collision system (PCS) is causing me some concern. Twice when the pre-collision system has activated, the car engaged the brakes automatically but a horrible vibration and sound sound occurred. I analogize the sound and feel to an anchor being dragged directly below the car and attached to the frame. It's really disconcerting because we felt the vibration directly under the car and it extended back. A passenger thought it was coming from directly under the back seat, but we felt it in the front seats too.

Has anyone else experienced anything similar?