Ответ: Альтернатива штатной MMCS ("голове" с DVD и навигацией)
Получил ответ от производителя переходника по поводу "фейдинга".:
I have checked with our technic, and according to them the original function of the car amplifier of Outlander only allows 2ch input. So the new deck might have 4 ch output but only 2ch input is allowed to connect to the car amplifier side. So the feder function is not possible to use in Outlander. If you would really like to use the fader, it might be possible by cutting and rewiring the wires, but according to our technician, it can cause trouble because of different resistance value requires to the original car amplifier of Outlander.