Smoke from the engine compartment

Hello! Yesterday I got a terrible shock: I am standing at the traffic light and suddenly squirts like stupid out of my bonnet. On the right side are really thick clouds come out. Since no red lamp approached I drove on and immediately called the workshop. There they told me that this would be normal and a well-known problem with the diesel. I had then parked the car and then drove again a piece and again smoke. Then I went to the factory after all On the way there…. Qualm. 🙁 The master told me that there is a known problem with diesel and additional heaters. But with heaters (of factory) the Probelm is not known. Now my question: Do you know the problem one of you? I only got the car about three weeks ago and at the price I expect a smoke-free driving. Today it did not smoke by the way. With the car I apparently have no luck. Balance of three weeks: 1. In the delivery are at d he bumper scratches from the installation of the parking aid and then also bangs something on the car (such a stand), 2. Scratched rear door on the passenger side (1 day old the car), but went away polish, 3. 10 days: I was crawling at the parking in the fender on the driver side (but reported), 4. Yesterday: smoke from the bonnet and keeling has an explanation. But in the diagnostic unit there was an error (something with flash point in the heater, how critical is the ?) protokoliert. Nevertheless I look forward to every new day with the moose… Many greetings and for help I am grateful, Matthias