Hobgoblin wrote:

I've not had the yellow light on yet but I have had the display show 'ENGINE SYSTEM FAULT' 'ALL SPECIAL PROGRAMS OFF', this has happened on 3 occasions but only when towing, once with caravan and twice with horsebox, each time turned off ignition and restarted engine and everything seems ok. Service department at the dealers seems to think I may have an intermittent turbo fault.

Weird bit, just had Turbo Chip out to do the business, absolutely no change what so ever, so I'm off to Diagnos in Oxford tomorrow to see if they can find out why, Alistair from TC seems to think it could be EGR valves possibly, another weird one that he has never seen before is, driving when my engine is cold, the revs stay high by this I mean even if I use command shift to select 6th at 60 mph the engine is doing at 3000 rpm, as soon as the engine comes close to normal running temp the speed stays the same but the revs drop to what I would call normal.
Anyone else experienced this?

Further to the above; went to Diagnos in Oxford, arrived about 11:30am, saw Matt and we took it out for a test drive and he considered that it didn’t seem to have the performance of a standard D3 never mind a tuned one , at this stage they were about to go to lunch and invited me along to the local golf club where we had a great time and laugh on the driving range once I could get the balls to go in the right direction . Anyway, after lunch got busy with the car, because it didn’t seem to have the performance of a standard it was decided to re-flash the ECU back to standard tune, out for another test drive, the improvement was quite dramatic so back to Diagnos to re-install the tune up, the improvement now was stunning particularly in the mid range , speaking then to Andrew, who I am told is ‘The boffin’ it was believed that the original program installed by LR was somehow corrupt which not only disallowed the tune up to make a difference but also hampered standard performance, they also couldn’t understand why the dealer didn’t re-flash the ECU when they had it in , instead the dealer simply cleared the fault codes then road tested it to try to recreate the fault, despite being told that the fault only occurred whilst towing, oh, and on the so called road test took it under such a low bridge that they had to lower the suspension, but forgot about the CB antenna attached to the roof rack and subsequently broke it, got a nice new Wilson 1000 out of them though so not too bad a result .
I feel I must congratulate Matt, Andrew and the rest of the Diagnos team for the entertainment, time and service and give them a BIG THANK YOU!! I know they read this forum, so to let you know, up to now the car seems to be running great, have done a trip to London with no issues, have towed the horse box around last weekend, no issues, so I’m quietly confident that the engine fault issues could have been due to the corruption in the initial programming (touch wood). And to cap it all the fuel consumption has gone from around 30 mpg to around 36 mpg .