* Engaging: They automatically engage when you start driving and the front wheels begin to turn faster than a certain speed. Essentially, they engage automatically when needed for four-wheel drive.
* Disengaging: They automatically disengage when you slow down below a certain speed. Again, this is automatic and happens without driver intervention.
You don't need to manually shift or turn anything to use the automatic hubs. If you are having issues with your 4x4 system engaging or disengaging, it's likely a problem with the system itself and not a matter of manual engagement. You should investigate other aspects of the 4WD system (like the transfer case) or consult a mechanic.
