Various little quirks on Italy’s mountain road

Hello together, for a long time my fat guy has been mucking. And that’s what I have here in Italy often the error “find the chassis workshop error” in the display. Have my chassis set up here on the bad roads extra high. And if I drive up the narrow mountain road here and in some curves fully hit I have the error in the display stand. Shortly afterwards it is gone again. Can this be normal, because the phantom has not been built for such conditions? I noticed that when I go uphill for 15 minutes he jerks at a certain curve just before the finish. But there is no warning light on. He does not do a bit of smoke either. This error is then also gone shortly afterwards. Can there be air bubbles in the diesel supply due to the many curves? Oil temperature also rises to 100-110 degrees. Generally, the Phaeton is already very tormented at 30 degrees under extreme conditions. Next year we drive again with our good a lten e39. Can these things be normal? Because a towing service could have problems up here. I attached a photo of the curves. I drive about 30 of them uphill until I am at our house.