The Columbus unit in my Superb Elegance 2012 has no sound and the screen language has changed to German. If I try to change it to English it tells me (in German) that it's loading, but it just hangs and does nothing.
My local 'expert' thinks it's sh***ed and advises replacement. Two queries: 1) are these known symptoms and is there a cure? 2) I can see used units forsale on Ebay. My unit's model no. is 3TO035680E. There are a few units for sale on eBay with the same model number but a different final letter, A B C or D, though they all come from Superbs. Is this final letter significant?