Mine is a 2000MY Disco2 TD5 and I occasionally get the urge to make a home made mech to action the difflock. But TBH I don't often get into a situation where I might need it. I have yet to really test traction control. But with my Disco 1 300tdi I did once get into a situation where even with diff lock I was stuck.Well technically all guesses are correct, I took the gaiter off and it's not the type of lever that will push to the side for diff lock
Not only that I don't think it's even an original LR sticker, my other is literally a sticker but this is a raised flexible plastic thing ...
Not even off road. On a (big) piece of grass (VERY wet!) in front of a mate's house. Fortunately he too had a Landy, with a winch, but even then he had to secure the back of his to a tree to be able to pull me and help me out! Good thing he wasn't bothered about the ruts I left behind!