2021 LINCOLN AVIATOR Vehicle Speed Control Problems

Driving 75mph. Cruise set to 75mph. Vehicle randomly reset cruising speed to 85 and 105mph or two separate occasions over 4 days. I went through the settings and disabled intelligent cruise control and switched it to adaptive cruise control, which doesn't use radar and navigation data. Only tell will tell if that fixed it. I already had speed sign recognition disabled.

UNKNOWN ON several occasions the vehicle would just shut off. Another occasion while getting on the freeway I pressed the accelerator pedal and the car pumped the brakes,there was no one in front of me or on side of me upon entering the freeway. Another incident I was in the fast lane on the freeway and the vehicle just shut off Thank goodness the fast lane had a place where I could pull over and and restart the vehicle. Also where the vehicle pumped the brakes, that happened on several occasions. Another thing the vehicle shut of again in the middle of the street. I couldn't put the car in neutral the steering was locked. All of incidents were extremely dangerous. The vehicle has been in the dealership shop twice now and I mentioned it to them on both occasions. And I was told it was the battery. That starts...