New to forum, here's my situation.
Driving back from store I notice the ses light on and there's been huge power loss, I cannot switch into 2wd or auto or anything. The 4wd indicator lights on dash (green tires) aren't on. I park in driveway and turn it off. Now it will not crank , no clicking no headlight dimming. There is however a high pitched whining noise barely noticeable. I'm guessing its the relay or the switch. I understand the switch is on outside of trans but idk where the relay is, I would like to teat relay first before I do the switch. Thanks in advance.

Maybe try posting this in the Pathfinder/QX4 forum under the trucks category???