So just wanted to update on this pesky issue since I made some progress. I took the door panel off and took the seat out and cleaned all the connections. Couldn't see any issues with the connections, maybe it was just loose but the memory seats now work!
The driver seat still does not heat or cool but I also found the culprit. It is the climate control module for the driver seat. One of the connectors had melted and fused with the module. Seems to be a common issue with infinitis. I found this link as well, again from myg37.
https://www.myg37.com/forums/general-te ... rly-2.html
There's even a reply on there from an m37 owner with the same issue. So if anyone has the problem of the seat not heating or cooling, the connections to this module would be the first thing I would check as it seems like a common issue. Mine also had the symptom of the light on the seat heat/vent dial coming on for a few seconds and then turning off.
Ordered the module for 60$ off of eBay, can't wait to get it and replace it!
Part number for this front driver seat climate control module is 873D6-1MA0A and it's located under the seat. Very easily accessible once the seat is removed. Hope this helps anyone else with this problem.