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my 2008 TDV6 HSE did the same thing a few months ago. Warning lights, messages and went into limp home mode. When i came to a stop I lost all drive. Got out, locked it and waited afew minutes and problem was gone. Rang dealer next day and they indicated the usual brake switch issue as the most likely cause. When it went in and they plugged it into the computer it turned out to be the fuel pump which was replaced. It appears problem is fixed. Luckily it was still under warranty.
Found the suspension error a few times over 1000km traveled over the last week with no trailer on. I had the brake control in. Un-plugged controler and 300km later had seen no more errors. Coming back saw the error occur again and have seen it a few more times with the controler unplugged so I can scratch that theory.
Ritters suggested the air compresor was working just not as effecently as the specs. The error if it goes to Red and with 30mph speed limit warning resolves it self back to yellow. New compressor might be needed.
Re flashing the Suspension Control unit on my 2005 D3 SE worked a treat. Should have been done a long time ago. I wonder why it isn't done? If the coding is updated as much as it was from 2005 to 2010 as I have just discovered then I would have thought this is a must for all D3 and after a while D4 owners as well.
How can we tell if new codes are developed by LD for our trucks?
How many Control units do we have? Height, E.C.U., 4WD options at a guess.
All my issues are now fixed. Going to get the above list answered next time it is in the shop in another 10k km. I wonder if I had had the re-flash before the new compressor was fited if the new one would have been needed. It was pumping a little slowly so I am happy to have it new now.