Moin my Megane (Bj 97, Classic, 1.6 75hp) leaves me no rest. Since today my ventilation “cracks” when I turn on the air (no matter if the air is on or off) The ventilation seems to “turn on” (is getting louder) then it cracks once or twice, is quiet again and then turns on again until it “cracks” The phenomenon only occurs when the air is switched on and seems to come out of the area below the windshield. I suspect that there is the blower engine there? Does someone have something similar to this? Does anyone know what that might be? And of course what would cost a reperture? Thank you Mfg Pirke