Adding XM radio to A4 B7 Avant with Nav+

Hey gang,

I've connected XM 8E0 035 595 E to my factory Nav+ system. So I click on Satellite radio and give me some garbage saying that adding satellite radio is a simple add-on and to contact my Audi dealership.

I took a look at the can bus to see if I need to move it over one... but there's no plug to move it over to.

I was wondering, do I need to use the VAG tool to get it noticed by the Nav+?

Any help would be great.

P.S. my audi Canadian 2006 B7 Avant with Nav+ (without XM from the factory), if that means anything