Dear sjct_watt! Let me ask You about: You've wrote many years ago at this forum:
https://www.scionlife.com/forums/xa-tech-diy-1816/alarm-programming-scion-security-xa-not-other-models-13011/ - how to programm Ignition-Controlled Automatic Door Lock/Unlock for Scion xA. I have boght the same car 2006 years old and looking for this procedure. But there at Your text is the phrase: - 3. Select the Operating Mode and Complete the Programming Procedure.
How we can do this? When I followed Your procedure , after 5-time key tourn there is no flashes for lights , only the buzzer sound changes from permanent short beeps to one long beep and then no more indication . Probably You have some more variants for this procedure? I'd be very gratefull for Your help! Vadim, Perm city , Russia