Yes the fans do kick in, somewhere around 220-230F. I never noticed this issue until I had a P code to replace the ECT sensor. I replaced the sensor and have noticed this issue ever since. The temp could be sitting around 195 while driving and then all of a sudden it will just shoot up to 220+ in seconds. If I have my window down or I park and get out I smell coolant although like I said I am not losing a drop. In my experience with my other vehicles the engine coolant temp reaches its operating temp and stays there, it does not shoot way up then drop way down.