Try googling this search term “2012 S350 (W221) Japan Spec - can these quirks be fixed?” It May lead to helpful information.
Thanks very much, BoatWaco, that link looks to have the answer I've been looking for, although some of the posters in the thread think it still can't be done using the way suggested; but I remain optimistic.Try googling this search term “2012 S350 (W221) Japan Spec - can these quirks be fixed?” It May lead to helpful information.