Hello. New owner of 2010 xD.
I have a Pioneer radio and want to put a used Alpine in for HD functionality. Can I just change the radio with a used one from another 2010 Scion? Do I have to enter an anti theft code? Will it just work? Thank you

 

I didn't buy an Alpine radio from ebay. Instead, I went to picknpull and got a touchscreen radio from a 2013 xB. It had the adapter harness connected, so I got lucky I guess. Put it in my 2010 xD and it works. There was no code required. The steering wheel controls function as well.