2017 Toyota Sienna engine problems

I was driving on the interstate at approximately 65 miles per hour. My 'check all wheel drive system' warning alarm came on shortly followed by the: check engine, battery alarm, collision breaking system, etc. I'm certain there were more alerts going off; however I was trying to steer a car, that had lost power off the roadway. I was able to get the car safely onto the shoulder where I attempted to turn off the vehicle. I couldn't turn the car off until I realized I needed the car to be in park.

The contact owns a 2017 Toyota Sienna. The contact stated that occasionally while driving approximately 35 MPH, the vehicle lost automotive power before jolting forward. There was an unknown warning light illuminated. In addition, the contact stated that the failure had progressed over time. The vehicle was taken to a local independent mechanic; however, the cause of the failure was unknown. The local dealer was not contacted. The vehicle was not diagnosed or repaired.