Does anyone know what the last letter designation stands for on a sirius reciever. A friend has one for sale and it's this number 8E0 035 593 M.
I know without the M it would work for my 04' A4 w/o nav. But I'm not sure what the M means and if it would work. I would just try it but its 2800 miles away from me.

Thanks

I've never seen the 'M' at the end... I would definatly call a dealer and see if it is compatible... here is a good link for most radios/nav for all Audis: http://www.audizine.com/forum/showth...threadid=70631
Sorry couldn't be more help...hope this points you in right direction!