So, after 6 years it looks like I finally need to replace the 12V battery. If I connect battery charger to battery cables maintaining 12V to car while I change the battery. Will that allow me to avoid all of the various resets called for in the manual.
Look at the manual. There are numerous steps that are referenced from the original item of disconnecting the battery. Some steps involve the Nissan service tool.
To anyone that has replaced the 12V battery. Did you go through all of the steps the manual calls out? Or, just replace the battery like any conventional car. Pull negative cable first , then positive. Reverse for installing new battery.