Adaptive Cruise Control problems of the 2021 Toyota Sienna

I believe the computer caused the problem. The car is available for inspection as personnel at gettel Toyota in punta gorda claimed they couldn't touch the computer and have done nothing. Purchased Sienna in August 2021. In October at about 5:30 a. M. We were in the far left lane on a PA interstate, traffic came to a stop for construction. A delivery truck in front of us rolled backward a bit. When traffic started up again, our car would not go forward, only reverse. We tried "drive"--nothing--only had reverse. Finally, with cars whizzing around us, shut the engine off. Upon restarting, all gears were restored and we continued on to boston. We were shaken by this event. Since then, we have had numerous incidents of the car not moving when I put it (mainly) into reverse. I had to shut the engine off--restart--and it went into gear. Latest incidents--first week February 2024--I pulled into a parking space at englewood hospital. After visiting my husband, came out, started the car, put it into reverse--nothing. Shut the car off--restarted it, and it was ok. Ten minutes later, I pulled off onto the shoulder to take a call from one of his doctors and--no gears. Shut off the engine, restarted it and it was ok. I'm worried I'll stop for a traffic light on one of our 4 or 6 lane streets and get hit because our car won't go into gear.

When I apply brakes sometimes the brake is released and I need to push the paddle hard to engage the brake again. Same thing happens sometimes on adaptive cruise control. It sometimes release the brake and I need to push the paddle to engage the brake.