4WD Engages with 20A fuse removed

Recently noticed it seemed like my 2015 Trd sport V6 6spd was in 4wd but no indication that it was. Tried removing fuses to see if it was. Seemed to ride smoother(less wheel chatter), stopped at store came back out reversed out of spot seemed tough to turn wheel. Proceeded forward and made a hard right turn in lot and heard a loud bang from 4wd disengaging. Truck had Viper remote start on it. Could this cause it to act up?

 

Not 100% on the electrical component of having a starter, but - the actuator may need a tune up, as far as cleaning and lubricating / coating with silicone grease.
I have an 07 and needed to give it a good once-over for my intermittent 4wd issues.