How to fix Android screen no sound for Mercedes With NTG4.5 system

• If your car has optic fiber(Ignore if no optic fiber), need to relocate it to android harnes  Click for details

• Some Mercedes models require connection to the AUX port to output sound

• Aux has two switching modes, manual and automatic：

Note: if your car is NTG4.5 system and has no AUX options in NTG menu, need to activate Aux inside factory settings first, the route is : Factory Settings-Vehicle-AUX Activate, after restart, you will see AUX options inside NTG menu.

https://youtu.be/k6sPVUkM9F0  — Video to show how to activate Aux

https://youtu.be/UwSd1sqx5P4 —- Video for Benz to show how to set AUX Switching mode to “Manual/ automatic” for sound.

Automatic modes( different Android versions, different setup Routes.):

setup Routes 1：

① Setting->System->AUX setting->Check “Automatically switch AUX” (Default is checked)

②Go to the NTG menu, check Position of “Audio” and “AUX”, in the example below, the “Audio” and “AUX” positions are “2″ and “5″, so set AUX Position as “2″ and “5″ ( A few cars need to add 1 to the actual value, which is “3″ and “6″), Route: Setting->System->AUX setting

setup Routes 2：

①Setting->Factory(code”2018″)->Vehicle->AUX Switching modes->select Automatic (Default is checked).

②Go to the NTG menu, check Position of “Audio” and “AUX”, in the example below, the “Audio” and “AUX” positions are “2″ and “5″ ( A few cars need to add 1 to the actual value, which is “3″ and “6″) , so set AUX Position as “2″ and “5″ .Route: Setting–>system >AUX Position

Manual modes( different Android versions, different setup Routes):

setup Routes 1：

① Setting->System->AUX setting->Uncheck “Automatically switch AUX”, and set AUX Position as “0″ and “0″, then go to NTG menu and Choose “Audio-AUX”, touch screen to android system, sound out.

setup Routes 2：

Setting->Factory(code”2018″)->Vehicle->AUX Switching modes->select Manual, and set AUX Position as “0″ and “0″ (Route: Setting->system->AUX Position), then go to NTG menu and Choose “Audio-AUX”, touch screen to android system, sound out.

• Check if the “CAN Protocol” chosen is “NTG4.5/4.7″

• Checking the volume value of the Android system

NOTE：

        1.Some models not support Automatically switch AUX and need to be set to manual mode.

2. “AUX Switching scheme” is Amplifier selection, “Scheme A” is for ” Alpine “, “Scheme H” is for “Harman “, “Customize” is for other brand, Choose it according to head unit brand