Hifimax Mercedes Benz Android navigation cable connection & setting tutorial, step by step guide to fix mercedes android no audio/ no sound problem, all Mercedes NTG4.5 android screen Install tutorial. order products from : https://hifimaxgps.com/

NO SOUND checking:
(1) Check if have moved the optical fiber (if any) correctly;
(2) Check if have connected the AUX/AMI cable correctly;
(3) Check the setting for "audio position" as mentioned in this video;
(4) Choose "AUX" before playing the music or video from android screen;
(5) If your phone connecting to Apple Carplay (or Android auto), it not allow to connect the OEM Bluetooth at the same time;