Brake Light On problems of the 2014 Kia Motor Optima

I left the dealer lot at closing time 2/5/2021 the traction light and brake lights warnings were on the abs light the car brakes skidded upon applying brakes driving at a slow speed the car shook while applying brakes and it felt as though the entire motor was going to fall out . Later my 17 year old whom has driven for 2 years was driving a few miles from home she said the steering went out the brakes went out she skid across to the other side of the road did not hit anything yet the entire engine and entire front end of the car came apart the frame and all . She could easily have been killed I would like this investigated thoroughly. I told her to drive slow and she was only going around the corner I had planned to take it back to the dealer the following Monday bjut was totalled before I did. She reported going 45 mph on a road when I had the issues I was driving about 35 to 45 on a regular road did not drive it on an interstate yet due to the uneasy ways it was handeling and I have never had a wreck in all my years of driving and 1 and a half hour drive each way to work for 40 years . The car also felt as though it was accelerating on its own also'.

While driving my check brake light will come on intermittently. Seems to happen more frequently when its warm outside. The traction control light always comes on at the same time. The brake light will go off after the car is turned off and restarted, the traction light will stay on for awhile. Sometimes it will go off after a few miles, others it takes a day to go off. Only difference I can see while driving is that before it comes on the brakes will grab harder than usual. The lights only come on when the car is in motion or immediately after coming to a stop. Never when in park. This started a few days after I purchased the car. I've had the car at the kia dealership many times for this issue and they have never fixed the problem.

Brake rear lights went out, changed brake switch and fuse and lights still not working. Only have 49800 miles on the car. Was on highway and a man stooed me and let me know they are not working.