Yeah... the lew probably needs a recalibrate. You'll see when you run inpa or PA soft what is causing it.

My Christmas lights were due to a worn out transfer case motor gear. Cheap plastic that gets chewed up real easy. I bought a brass one to replace it.

https://www.autohausaz.com/pn/UR-27102413711PRM

Then also oil abrasion. Just change your transfer case fluid. To clear that one though you need ista.