SMG Gearboxes

[AlexGTT]

Steve, a faulty gearbox oil temp sender sounds possible, as does the pump relay you mention. Is there any way a diagnostic reader could isolate faults with those individual components? Would be interesting to see what codes have been thrown up when the diagnostics are checked. It's worth a swop of those components, individually to accurately diagnose. Probably the cheapest items to change on the whole SMG system!