socalxr

I've searched and found no answers. (surprisingly) Ok, the factory nav unit has more than just HVAC controls, it also has the mechanics, maintenance, and error codes on it too. So are there other after market unit that cover all that? Plus, all I've seen in the after market world is unit that work with a stock cd changer/radio and not a nav unit. If anyone can give me some insight or point me to other threads, that would be great. Plus, is it a fairly direct swap with a 2010-2012 nav unit.