Is this what you mean that was answered by a very knowledgeable member:With the Latitude 4x4, when you engage the 4x4 how man wheels receive power? do both rear wheels spin at the same time, like a limited-slip or posi-traction rear? or is it just one in front and one in rear depending upon traction?
As I had it explained to me.
4wd lock is for any condition that you want the vehicle to drive all 4 tires at the same time. Typically Renegades operate as front wheel drive and engage the rear wheels if the front wheels begin to slip.
Simply changing the dial selector to snow, sand, or mud will engage the 4wd lock. The snow and sand modes provide different torque bias front to rear (along with changing the shift patterns) while the mud mode keeps a 50/50 "locked" bias.
Auto: fwd until wheel slip occurs then 4wd kicks in, traction control on full alert
Auto 4wd lock: 4wd 50/50 torque bias with traction control and stability control on full alert
Snow: 4wd 60/40 torque bias for better stability, traction control set to snow parameters to allow a little wheel slip
Sand: 4wd 40/60 torque bias for better power delivery, traction control is very limited with stability control dialed back
Mud: 4wd 50/50 torque bias with traction control off and I would guess stability control mostly off
Rock: 4wd 50/50 torque bias with first gear engaged and rear differential locked
Credit to the OP, I can't remember whom it was.