NHTSA Complaint #11448944 — 2018 NISSAN SENTRA

I purchased this car October 10th of 2021 and 2 days after I purchased it I called my service department because I was driving on the highway at 65 miles an hour and the malfunction warning light came on for the automatic braking system and it also depressed my brakes so it scared the crap out of me. I was told that because of the weather it was raining that day that that sometimes happens. I didn't think anything of it on December 10th my son got into a car accident with the car and he did some damage to the front axle and the front end of the car it has since been repaired and now everyday several times a day the same thing happens and it is messing with my brakes and it's scaring me and I don't know what to do.