Is it normal that the apertures of the ventilation remain open at approx. 15 degrees outside temperature and normal solar radiation at temperature preselection of 21 – 22 °C? The apertures function perfectly, but I have often wondered that the apertures are open at relatively low outside temperatures. Can it be that the cooling capacity of the air conditioning system has decreased and therefore the system no longer cools sufficiently with closed apertures, so that these can be opened? If one eg. to 20 degrees It is also cool, but I have the suspicion that the climate would have to be able to do more. Will the days drive to VW, but without an appointment there is no wheel turning. Still have a guarantee, that should be fixed before it expires.