My roadster is a 2010 2.0 sig sport with the original Blaupunkt unit delivered in Switzerland. The Blaupunkt developped a fault it can no more read CD. Not such a big problem, but the navigation does not work anymore. At the beginning tesla did say, that you can not replace the original unit with an aftermarket type. Now tesla service tells me that I should go and buy any unit which fits the 1 DIN slot. So, has anybody put an aftermarket 1 DIN unit in his/hers car?