Pre Collisions System Malfunction and Braking Power Low warning

Hi All,

Hope someone can help. I have a 2016 Toyota Prius Touring with 105k miles. I just changed the 12v battery a few days ago with a battery from Toyota for this make/model.

I was driving home and suddenly the car was not accelerating and felt weird when I pressed the gas so I took the first exit off the freeway. As I did all these warning lights started flashing with the the dash saying "Pre Collision System Malfunction and Braking Power low visit your dealer". I pulled over and the car wouldn't move anymore without abrupt shaking when I would apply the break. I just called AAA and had the car towed to my local mechanic and will see what he says when he looks at it.
Any ideas on what happened? The car has been running great will all the maintenance done on time. The only thing I did recenlty was change out the 12V battery which was dead a few days ago. Any help would be appreciated.

Thanks