My understanding ( From a Navara hatchback owner ) is that you can't turn the traction control off, you can't in mine anyway. When you shift into low range it disables stability control but leaves the traction control on, hence the blinky lights when you loose traction. Same as when you press the button you are disabling stability control not traction control. In a low traction situation, just put the boot into it hard, I've done it a number of times with mine on steep loose hills and muddy rutted stuff, the traction control does its thing and works really well, as long as you are powering it, very different to diff locks where you can crawl with no throttle.