Hello, my first question to post. I have a 1998 A6 Quattro with the Bose 6 cd changer. During cold temperatures my unit cannot read my cds. It just goes through each one of them and it may finally read one of them but not very often. When the warm weather comes back, it seems to be okay. This is frustrating for me as we have 5 to 6 months of cold, snowy winter. Please let me know who does these repairs and is it very expensive? Thank you