Veradux

I am having a problem. I did a search but did not find much help. I just bought a 2007 Civic Si not to long ago, but I am unable to get my iPod to connect to the Aux port or get the XM button to do anything. The car has the standard Non Navigation Audio system for an SI. I press the button and it does nothing. The radio and everything works, just not the AUX/XM button. My Aux cord works in other cars so I already ruled out that.

Any help is greatly appreciated.