NHTSA Complaint #11596694 — 2020 JEEP COMPASS

At first my car would only display the “Coolant Temp Too High” message if I came to a complete stop, and went again.. or if i would go over a certain speed. At that time, i could pull over, turn it off, wait a few minutes, and turn it back on and i could watch my coolant temp drop drastically.It has progressively gotten worse to the point that i cannot drive the vehicle longer than five minutes without it overheating. I do the same thing, pull off and wait and turn it back on. It starts to go down a bit, however, as soon as i pull out and begin to drive it, it starts to raise back up immediately. There have been times where the message will display as soon as i turn the car on in the morning.. Please help me. I am a young college student and I have not been able to drive my car for over 6 months. We have changed the thermostat, flushed the coolant, checked for leaks, replaced the radiator cap, and water pump. I don’t know what else to do..