Hello first to everyone, I have a Renault Laguna K56 2 liters from 1997. He ran 260000Km and gasoline. Now to my problem. I was standing in the traffic jam just before Cologne when the board computer said at once. Temperature please rise and turn off engine. Then I immediately drove cars on the sides and parked them. That happened once on the way back when I was at home because I brought cars to the workshop the next day. There they told me that the water pump, thermostat and a thermoswitch are defective. Then they told me that they had to change the belt directly with it. Everything would be done. Now I drive exactly 10KM with the car and the engine overheated directly and goes directly into the red area. I to the workshop there they told me that it is probably broken at the cylinder head seal. Can this be ????? because it only runs in the stand really hot ???? Except after workshop visit there he would be inside 10KM direk is that normal? I don’t know about cars she has since my last hope. Oh yes maybe I should notice that the engine is running exactly as it should run it doesn’t jerk or any other white smoke. That’s why I personally don’t think it’s the cylinder head seal but as I said, is laie? Could it lie on the container lid if it’s leaking or on the thermoswitch or on the valve or ? Love greetings and thank you very much