My bad, i thought that BMW is almost the same as Mercedes, it turns that it is not. Mercedes doesn't have such flaws by design - there are no writable connectio

My bad, i thought that BMW is almost the same as Mercedes, it turns that it is not. Mercedes doesn't have such flaws by design - there are no writable connections from media and can bus to steering, engine, gearbox etc. And everything is encrypted there (unlike CAN). I expected that BMW is same as Mercedes (since they use same flexray chips), but it seems that BMW screwed up their setup.