KOASON 12.3inch screen installation guide for Mercedes Benz A CLA GLA class W176 W117 A117 C117 GLA X156 NTG4.5 4.7 system.

The car in video is Mercedes Benz AMG A45 2015 year.

If you have no sound/no audio in android after installation, please check if your car has no Aux , for NTG4.5 system without Aux , need to activate Aux first as following video:

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If your car Mercedes Benz A class W176 W117 A117 C117 X156 is NTG5 system, please check the following installation guidance:

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For more details ,please visit :
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