All Terrain ABS?

[jonesfam]

Can 1 of the more experienced D3 drivers explain All Terran ABS to me & what it is supposed to do?
Not saying it doesn't work 'cause I don't know how it is supposed to work.
A couple of weeks ago I was going to Burketown through the mud in Mud/Ruts mode, hi range & probably a bit quick. Came across a big soft hole full of very sloppy black mud, hit the brakes & got lots of ABS action.
Got through fine but a bit faster than I would have liked, it was rough under the slop & I ended up slightly sideways, usually the D3 is solid as a rock in mud.
Anyway, just wondering how this works & what it does?
Thanks
Jonesfam

[rmp]

All ABS systems monitor the speed of each wheel*. When a computer notices a wheel is slowing down quicker relative to the rest it assumes that it is about to lock, ie stop rotating. A locked wheel can be good for stopping (loose surfaces, dry bitumen) but is often bad (wet bitumen), and in any case you lose steering. So, the computer momentarily releases the brakes and the wheel does not lock up, permitting efficient braking and steering.

Multi-terrain ABS; in some terrains permitting the wheel to dig in results in a shorter stopping distance, and multi-terrain systems do just that. LR's is calibrated slightly differently depending on the TR mode you have it in. VW and Toyota have similar setups albeit not via a TR system.

However, going too fast through mud...the electronics cannot rewrite the laws of physics so what you felt was the D3's best efforts to stop in conditions where there was very little traction. You can help it by using the engine (changing down), and minimisng steering input as the more you steer the more grip you use for changing direction and the less is available for slowing down. There is no driver control for ABS, it works in low range and cannot be disabled, and I've not ever wanted to and if anyone is likely to want to switch electronics over to manual control it'd be me, much as I love them I just want them under MY control!







* well, some primitive ones don't quite work that way.