Got a Metra Axxess AWSC component for my F90BT for my 07 Scion TC. It automatically connected to my steering wheel but it would not recognize/connect the head unit. The installer had tried everything, called Metra and even used another AWSC unit. Didn't work. Metra said it was the radio.
Can this be a hardware or software issue? Can a firmware upgrade solve this?
Any ideas/thoughts on how this can be resolved?
Your thoughts/ideas are greatly appreciated - thanks!