Thread: The Simpson Desert in a D3

Originally Posted by matti4556

C1A73-1C front right height sensor mechanism ... Circuit voltage out of range.
C1A74-1C rear left height sensor mechanism ... Circuit voltage out of range.
C1A75-1C rear right height sensor mechanism ... Circuit voltage out of range.
C1A07-62 cross articulation ... Signal compare failure.

rrsport.co.uk list a TSB for height sensors prior to vin 9A502505 for LA (Disco) vehicles that can trigger this same set of faults plus the front left. Manufacture process improvements for the sensors were introduced with that vin. Is your vin prior to this?

My D4 rocked badly going slowly across bumps and ruts near where I turn to reverse up to my house until the shocks were replaced recently with current D4 shocks. I suspect the cross-link valves were opened trying to improve the ride but had the opposite effect. Monitoring the cross-link valves was on my to-do list to see if they were indeed opening but the vehicle no longer rocks so no point.

If your vehicle has the earlier sensors then perhaps the rocking combined with LLAMS making the sensors operate out of their normal range triggered the known fault in the sensors.

wasa57, thanks. I really don't think the issues were llams related. The sensors would have gone out of range regardless of what height it was set at. The "wombat holes" we're spaced so that the vehicle was going to rock from side to side (causing the wild swings in sensor readings) A vehicle with an open front diff and no TC will degrade the track even further whenever a wheel lost traction going into a hole and just dig more sand out and on it goes, just digging deeper wombat holes. When you are committed to a long dune climb, on a one lane track, trying to avoid the spinifex type brush ready to bite you on both sides, you just grin and bear it The vehicles towing large trailers were the culprits on this trip. I can't wait for trailers to be banned in the Simpson Desert. They have banned fires in some Aboriginal Parks, so why not ban trailers that stuff up the environment out there more than a camp fire.
Llams was a godsend when fully laden on high speed undulating roads as it gave a good amount of bump stop clearance. I just added one click and kept driving. I have had it on the beach since in similar conditions and no issues after following Graeme's advice to have it on Fade-out mode. Without Llams I guess I would have just driven slower. The D3 does lull you into driving too fast for conditions so you have to remain alert to that.