2011 (W212) 180K Miles. NO sound. Checked Fuses, Amplifier and Head unit with another working items and No sound at all. Where should On the display I can see the mute symbol when I press the mute button but no volume up or down bar when I press plus (+) or (-) buttons. Where should I start again to fix this? Please help.

 

how did you test amplifier? Have no sound also! I suspect my amp is blown. Any ideas where to get a replacement amp besides the dealer?

 

Dubya, I ordered used one from ebay and tested and returned. The return shipping cost would be $10. The audio store charging about $50 to check. I am thinking to test with audio gateway module. Anyone knows where it is and how to replace it. Thanks.

 

It is my understanding that the AGW is the amplifier. The one you got from ebay did it produce sound? Did you have it coded to car? I heard it has to be coded and is not a plug and play part. If you did not have it coded and it worked awesome.

 

Provide VIN I'll pull compatible part #s. See attachments.

 

WDDHF5GB0BA426361

Thanks.

 

Coded? NO. I did not do any code. I just plugged and played and do nothing. Can you guide me? Thanks.

 

WDDHF8HB1BA359592 Are AGW and Amplifier the same unit? Is there any repair shops? THANX Konigstiger
ps: no sound no equalizer and no logic7 logo as in past use...

 

Hey jayalaba, Konigstiger answered message. He is far more knowledgeable about the vehicle than me.

 

Dubya, I think it is Multimedia Interface Control Unit A2049009301. I am not sure. Google says, Audio gateway control unit.

 

Yes, I am waiting for him to reply. Thanks.

 

Definitive answer have someone pull fault codes using Xentry (MB diagnostics). Steadfast on replacing parts without diagnostics, begin with amp you may get lucky with plug & play replacement but any problems, for instance still no sound you will need to transfer data using Xentry anyway so why not pull codes to begin with.

 

Thank you Konigstiger, I have no luck by replacing the amp. I did try with another one plug and play. Still no sound. How to transfer data using Xentry or how to pull code? can you please guide me? Thanks.

 

You need to find an independent shop that works on MB equipped with MB diagnostic system – called Xentry, DAS, or STAR. Request they erase all stored codes and retrieve current codes. These codes will identify your problem. If it is the amp see if shop will install amp you supply if so, they will need to transfer data from your original amp to replacement using same MB diagnostics system used to pull fault codes. Shop for replacement using part # 2129007108 only. Only alternative is MB dealer $$$ and they will only install new replacement most likely not allowing to to supply part $$$.

 

Thank you.

 

Boss, Any idea about this, 2011 E350. Not starting. Got the message in RED on the display. What went wrong. Stopped overnight and this morning not starting. Battery is good. Charged and Checked.

 

Check following @ front SAM (engine compartment):

Fuel pump control unit f4 (7.5A)
Starter relay f7 (20A)
Steering lock CU & Ignition f19 (20A)

 

I will check first thing in the morning and keep you updated.

 

All, Here is the fix for my No sound issue. The media interface was the problem. I just bypassed with optical fiber loop, under the front glow box compartment. Now, I need to update with one I bought from ebay. Help please.

 

Does the weather channel work?? Its a different antenna.
Have you pulled the radion and pushed in all the connectors??
My antenna connector clicked and radio AM FM then worked.

 

Before I replaced the loop, I did ty all the possibilities. Pulled the fuses, radio, amp, subwoofer amp, Sirius radio, all the cables.. only worked after bypass the optic. All radio station working.

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