No sound from speakers/ no reverse camera/Navi
https://mbworld.org/forums/e-class-w212/881295-no-sound-speakers-no-reverse-camera-navi.html#post8901200



Have you tried contacting the company you bought it from?
If no sound, the stock comand has to be set in the AUX position. This only works if you connected the AUX extension cable from the Android monitor to the AUX out connection in the center console.
The original back up cam can be activated through the monitor. Back up lines too. Those can be turned on or off.
Have you tried contacting the company you bought it from?
If no sound, the stock comand has to be set in the AUX position. This only works if you connected the AUX extension cable from the Android monitor to the AUX out connection in the center console.
The original back up cam can be activated through the monitor. Back up lines too. Those can be turned on or off.
On CarPlay, to toggle between the factory MB system and the CarPlay system, I press and hold (for 2-3 seconds) the “Hang up” button on the steering wheel or the “Back” button on the center console.
Maybe that works similarly on an Android system.
Good luck!
Pete


