I have a 2015 mirage with 30,000 on it and recebtly I saw the red temp light come on. The first time it flickered and went off. The 2nd time (tonight) it came on steady for a few seconds (20-40s?) And then went back off. Anyone else have this problem or ideas? I called the Mitsubishi dealership here and they told me to bring it in if it doesn't happen again but the light does not stay on long enough for them to diagnose it, etc. So, more details. Both think this has happened I have had the windows up, no AC, using the USB for music, no AC or heater, and getting extremely wonderful gas mileage ... Like up50-52. For fairly short distances of highway driving... 30+/- miles total. Coolant is in the resovoir.