Hello all, I have a Citroen Xsara, built in ’99/ first registration ’00. My ventilation has always caused me problems. It always went on full pull or not at all temporarily. But just today at the winter break nothing happens anymore and I hear only a buzzing from the center console. Does one know this symptom? Ventilation engine defective?? Pipes run through?? Or something else??? Can one possibly fix this itself and avoid such an incompetent factory visit? I ask for s Chnelle help, thank you in advance!!! Christian