Good morning, please don’t think me or my question in this forum is stupid, but: what is your opinion/experience after a heater, in this case a Webasto ThermoTop C ? I had a complete heater installed at a Hyundai dealer, including the remote control T 100 HTM with heating management. I’m surprised that after only 6 minutes the heater regulates or even runs out of the reduced heating area – after only 1 – 2 minutes When I enter a departure time (e.g. 10 a.m.) via HTM, the heating calculates the necessary time before the departure to the heating. In the current weather this is about 35 minutes. For a complete heating of the system incl. motor circuit this would also be the correct time. My heating has done its work after 6 minutes and switches off and on/off again and again. In this case the burner starts to start again. u smoke, so that the exhaust gases reach into the interior. Have now run the heating several times 2×30 minutes, the interior is after a short time already well warm, but the engine is definitely not heated! And that is the real meaning of a heater, namely the avoidance of a KALTSTARTS !! Have now got in contact with Hyundai and send me the installation plans: According to instructions the heating is obviously planned so that by the installation of recoilve In the cooling circuit it should be avoided that warm water can get into the engine ! Why did I then install a burner with 5.2 KW heating power, which can heat up a water quantity of max. 3 liters in a very short time to 65 or 72 degrees, because at these two temperatures the heating regulates in small or off. Once the water has become a little cooler again, the heating phase starts again. Please for tips.