Yesterday my mother-in-law called me completely dissolving and told me that she was standing in Ludwigshafen and it was steaming out of the engine of LUPO 1.0, EZ 12/1999 with currently 125,000 KM. I immediately packed tool case and 4 bottles of water. In fact, the balance tank was totally empty and everything under it was wet. All hoses were tight. I filled water and started the engine. The engine was warm and the liquid level in the balance tank rose continuously. Seeing from the cooler to the engine was warm, the lower cold. Since there was no workshop open yesterday, I thought I was trying to bring the car somehow to my local Bosch workshop about 10 KM away. After about 2 KM ride the temperature rises to 100 degrees. I drove out to the right (motorway) and let the car cool down. Then I tried again, but managed only 1.5 KM until the next exit. There I finished the game. From the balance tank it steamed, the cooling temperature indicator I called the ADAC, which then dragged the car to my Bosch service after 1 hour of waiting. There it is now and I am waiting for the diagnosis of the workshop. I tap on defective thermosstat, which did not open the large cooling circuit and or water pump. I do not hope that the cylinder head gasket has burned through or anything else has gone wrong. That would be a total damage.