So my Pioneer base head unit doesn't have an option to select "FR-S". I went online to the Scion live chat thing and this was the conversation:
Clayton: Hi, my name is Clayton. How may I help you?

Kurt Anderson: Hi Clayton. I have a question about the Pioneer base audio unit in my 2013 FR-S

Clayton: Thank you for contacting Scion. How can I further assist you today?

Kurt Anderson: In the audio manual, it tells you how to set the audio preset to the correct Scion model type (i.e. xB, iQ, tC, FR-S)

Kurt Anderson: however, on my audio system, I can select the preset for any current Scion model except the FR-S, there is no FR-S to select, just xB, xD, iQ, and tC.

Kurt Anderson: do you know why this would be?

Clayton: I can certainly look into that for you.

Kurt Anderson: thanks

Clayton: Please standby while I research that for you.

Kurt Anderson: ok thanks

Kurt Anderson: not sure if this helps - but I've been on some forums with this question, and someone replied that I should check the part # of the Pioneer head unit. He said that TOYOTA PART NO. PT546-00120 does not have the FR-S preset but TOYOTA PART NO. PT546-00130 does have it. I can't know if that's accurate or not, but may be helpful if the part #s he references are actual Toyota/Scion parts.

Clayton: Thank you for your patience, I apologize for the delay.

Clayton: I was looking through a copy of the manual and was only able to find the tC, xB, xD and iQ settings for the standard audio system.

Clayton: The BeSpoke premium audio system has an FR-S mode but not the standard Pioneer unit.

Kurt Anderson: ok

Clayton: Is there anything else I can assist you with today?

Kurt Anderson: no that was it

Clayton: Thank you for contacting Scion. Have a great day!
So my question is - does anyone here (from the U.S./Canada) with the Pioneer base audio have the same issue as I have? (no FR-S option to select). It seems that most do/some don't - and then the Scion customer service rep says there is NO FR-S selection on the Pioneer base head unit.
/Frustrated.