Verdict from my audio shop:
-Head unit is bad and needs exchange. Going to ask the amazon vendor to do an exchange but I'm not too hopeful. Really don't want to have to ship it to Pioneer out West but that may be my only option. Shop says that the speakers cutting out has to do with the nav system doing "something weird". They also said my wiring was good and save for a couple loose connections, everything looked to be in order.
-Key fob is Nissan's issue and they need to handle it. Dealership said the next step would be to replace the module (which I suspect may fix the issue).
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