On my first longer journeys over Easter, where it was quite cold, I also tried the heating. I tried the automatic air conditioning, AC on On. I set the temperature regulator to 21,5 degrees. The air from the central nozzles was cooler. No noticeable heating effect. Slowly I regulated the temperature upwards. Up to 23 degrees nothing changed noticeably. Only from 23,5 – 24 degrees the air temperature was warm. Is this a “normal” behavior or a known phenomenon with best immter cause? Are there still possibilities in the regulation so that the warm air adjusts earlier? Have already tried the SuFu but found nothing appropriate.