How do I get my iPod to work after changing the car battery in my 2006 Toyota Avalon.?

I have an aftermarket iPod system (or whatever you call it) installed in my 2006 Toyota Avalon. I was able to play my iPod using the AM/Satellite button. Ever since the car battery was changed, the button only goes to AM and not to satellite and the system no longer recognizes my iPod.How do I get my iPod to work after changing the car battery in my 2006 Toyota Avalon.?Sounds like a computer problem. Take it to the Toyota dealership, they can hook it up to their computer and tell you. It shouldn't cost anything, but some will charge to hook it up, it depends on the dealer.