Bottom line is, I actually like the mod and am debating installing it. However, as with all things, it has to be used correctly or it COULD damage/destroy something. Yes, if you engage it a few times while in 4LO it probably wont be catastrophic but it certainly could and probably will cause unnecessary wear that will result in reliability problems or a break in the future. Same could be said for jamming your truck into 4LO while the truck is not in neutral. You “can” do it but it will cause problems over time. My only point is this whole post is use the mod the way the manufacturer says to. The OP asked a specific question about it’s engagement/disengagement and the manufacture provides guidance along with a “warning” and “important” notice. Those should be abided by if you are going to use this mod or you CAN risk damaging or destroying something.