Officially back and forth
according to the toyo manual. What I found was engaging 4wd then making a right turn, not necessarily a complete right but most of it, then click it would engage.
What I really found out was PO was not using 4wd monthly for at least 10 miles like the toyo manual sez. So just use 4wd weekly or so for a few miles and in time it will engage/disengage with ease. Luck! :banana: