RNS-E Satalite Radio?

[DocDubman]

Hello,

I currently own a 04' Audi A4 with OEM RNS-E Navigation unit.

My question is what steps must I take to have XM Radio Activated and working? The car does have an active whale tail.

Are there any additional hardware installations necessary?

[ApexIt]

make sure that you have a satellite radio receiver installed in the car. I believe that satellite radio was an option. If you do have the receiver, id check the owners manual for activation, possibly call the dealer or call xm satellite radio.