car bumped and electronic nannies acting up


We have since driven the car several times. Most of the time it seems fine. Once while on a side street the car slammed to a stop and had a dash warning that the car had been hit. This morning, my wife told me that it declared the lane keeping and blind spot nannies inoperative.
Aside from the scrapes on the light, nothing looks off. The person who hit our car was good enough to leave a note. I don't want to deal with the hassle of going through his insurance or bringing it to a dealer if all else was well, but it seems something has been impacted. Does anyone have any experience with this or any advice?
Thanks in advance!


