tgarten

M7y sat nav is giving the "unable to read data" and "unable to read DVD. Check if DVD is damaged or dirty" errors, so I'm looking to replace it with a second hand unit. I've seen a couple for sale on ebay, but they are both out of 2009 cars. Mine is a 2007, with the Mark Levinson unit. My question is, will the later unit fit, and work correctly in my car? From the photos on ebay, I can see the later model is slightly more rounded on the edges, and I think they also have DAB radio. Also, one of the sellers states that the unit will need a code. Does anyone know how I go about recoding one of these units? Thanks.