2023 Toyota 4Runner Steering Problems

I was driving the vehicle and suddenly the steering wheel started to getting hard to turn it and the dash board doesn’t show any failure I went right away to dealership close by they inspected the vehicle they states there is a power steering failure but the car never showed any failure on dashboard or safety system

On [XXX] while driving approximately 60 mph on a straight smooth highway only about 4 miles from my home my 4 Runner started violently shaking. The whole vehicle was shaking like the wheels were going to fall off. The steering wheel was shaking and I was shaking due to the amount of vibration. I did not depress the brakes for fear it would flip and crash. I let off the accelerator to slow down carefully and find a spot to pull off the highway. As I got slower I checked the onboard tire pressure which indicated all tires were holding correct amounts of air. About 3/4 to a mile from the time the shaking started it stopped shaking and about a quarter mile later it did it one more time for a few seconds. After that it did not occur again. After making a couple stops along my day I was driving at about 40mph when the big red box that reads BREAK came on while the vehicle made a loud beeping noise over and over until the light went off. There were no vehicles in front of me to cause the anti collision alert to deploy. As of [XXX] Toyota of Fayetteville, Arkansas has my vehicle to check this issue. They are also replacing my front facing camera that has finally arrived after months of waiting for it to be delivered. It was found to be defective shortly after purchase August or September 2023. I only had the vehicle for a few weeks when the camera stopped working. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)