I had a problem with the gearbox slipping back into auto after driving a short distance in dynamic mode, 3 x visits to Jag failed to find the problem until I described (photos & words) exactly what was happening in all drive selections. Low and behold they found a pinched gear paddle connector, so they replaced it FOC and voila all is good. I find persistence with Jaguar starting from their Corporate department all the way down to the franchise dealer works. Had the same issue with a former C63S AMG and went to the top and got results.