I'm no expert on these different systems, but from what I understand, no. Hopefully someone can correct me if I'm wrong, but this is how I understand things: In pre-IQ systems, there was an add-on component for the sat nav that added a module and I think a DVD for the map disk. This plugged into the headunit and used its screen and controls. When they put out the IQ system, the nav was incorporated into the IQ chassis, not an external module. So either your IQ has sat nav or doesn't, there's no real option to upgrade by plugging in a module. So that would indicate to me that that plug is only relevant to pre-IQ headunits. And if you've got the old module from your previous system, you can make around $350 selling it.
Again, with a bit of guess work, I would think your nav is either not picking up a proper signal from the satellite and isn't thinking you're somewhere else, just can't see you, or some funny bugger has played with your settings. In my aftermarket unit, there is a setting for correcting your location if the GPS has you in the wrong spot. If it tracks along with pretty much the same path you travel, but in the wrong spot, I'd look at settings. If it either jumps all over the place or doesn't move, I'd look at the signal being an issue.
As for the mic and bluetooth, is there one in your car? Is it plugged in? Sorry, I don't even know if it has bluetooth built in to the IQ or uses a separate module like earlier systems. Did you have bluetooth in your original system? If not, you probably don't have a mic unless the installer put one in. Have to check the settings and either hope someone knowledgeable pipes up or see the person that you got the IQ from. Did you install it, or get it installed? If you bought it off someone and had them install it, I'd be going back to them asking questions.