2016 - GLA 250 - Out of the sudden I noticed the car temperature went through the roof in less than 20 min running, moving from the normal 80 to the 120 mark and then the Warning: "Coolant too hot Stop Vehicle Turn Engine Off". I have not used the car much since I am working from home the last 2 weeks so I don't understand what may be wrong. Similar with the post above I believe … Any thoughts? Thank you.