I bought a well used 03 td6 a week ago and immediately hooked up the caravan and towed to Cornwall. Although the air suspension worked fine during test drive and on the 20 miles home, it threw the error code and the level controls inside stopped working when we pulled out of the drive with caravan attached. I hoped it would reset with the van detached but no luck. Would anyone in Cornwall (St Austell) be able to read the error and reset please? I previously had a BMW e39 which I have the software for, but that is at home, and I don't think it will talk to the L322 anyway? To avoid troubling others in the future what software would be the best to invest in? Thanks. David