[ems3]

A similar thing happened to me on Tuesday.

I had just merged on to the interstate when I suddenly lost power. I had to absolutely floor it to accelerate enough to change lanes to get on the shoulder. Right after the loss of power, it gave me the same overheating warning. I had it towed to the dealership and I went by a few hours later to see if I could pull some codes. (nope)

I find it funny that it could have "overheated" in less than five minutes of driving, which leads me to think it's a thermostat issue, especially because at the dealership I started it up and the radiator fan went into full blast immediately, even though the engine was completely cold. Then again, thermostat and water pump problems tend to run hand in hand...
(first post, pls don't bite!)