XM radio

[painter0121]

This might seem like a dumb question, but how can you tell if your HU is XM ready?

I have a 2004 4runner SR5

 

[Mark86]

Instead of AM, your button would say AM/SAT.

 

[cguntharp]

I know there's a lot of discussion here about upgrading the stock radio to a Scion Pioneer system. What additional product is needed to add XM service to a Scion HU?