E-Class (W212) 2010 - 2016: E 350, E 550
Sponsored by:
Sponsored by: CARiD

No Sound from Comand -Ring Break Position 1

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Feb 4, 2024 | 10:16 PM
  #1  
jjyoung's Avatar
Thread Starter
Newbie
 
Joined: Mar 2007
Posts: 4
Likes: 1
From: Vero Beach, FL
2013 E350 4matic
No Sound from Comand -Ring Break Position 1

In a new to me 2013 E350 I have no sound coming from Comand. I can toggle the mute on and off, so that's not it. I ran the diagnostic menus and scanned it with a basic scanner. Stored and current code is D0 18 "MOST communication has a malfunction (ring break at position 1).

Now what? Any insight into what position 1 is or is it not that easy? I have 518 Universal Media Interface module in my data card, along with SAT receiver, neither of which I'll ever use. I think I just need a signal between the amp and the head unit to get sound. Can I put a fiber optic loop in the media interface module and SAT receiver to take them out of the equation?
Reply
Old Feb 5, 2024 | 12:04 AM
  #2  
CaliBenzDriver's Avatar
Out Of Control!!
Community Builder
Community Influencer
Liked
Community Favorite
 
Joined: Apr 2019
Posts: 12,091
Likes: 6,868
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
MOST RING... who's who

Originally Posted by jjyoung
In a new to me 2013 E350 I have no sound coming from Comand. I can toggle the mute on and off, so that's not it. I ran the diagnostic menus and scanned it with a basic scanner. Stored and current code is D0 18 "MOST communication has a malfunction (ring break at position 1).

Now what? Any insight into what position 1 is or is it not that easy?
I have 518 Universal Media Interface module in my data card, along with SAT receiver, neither of which I'll ever use. I think I just need a signal between the amp and the head unit to get sound.
Can I put a fiber optic loop in the media interface module and SAT receiver to take them out of the equation?
I have had limited exposure to troubleshooting the MOST fiber loop.

Not long ago I was interested in coding out the useless DVD with my cReader... so I looked around COMAND for the device map...

Let me try to locate my pics to point you to Device_1. (Device_0 being the head itself).

Here is what I could gather:

MOST

hope that helps

COMAND identifiant


​​​​Do you have a good complete scan of your chassis?

Last edited by CaliBenzDriver; Feb 5, 2024 at 01:44 AM. Reason: pics
Reply
Old Feb 5, 2024 | 10:09 AM
  #3  
Andre Cateb's Avatar
Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2018
Posts: 213
Likes: 119
From: Brazil
W212 (212.065/276.820)
Does your car has any of the premium sound systems (bang & olufsen or harman kardon)? I think they both uses the MOST network to connect the audio signal from the head unit to their respective amp. I have no idea however if the fiber optic cables that make-ou the MOST network are repairable.
Reply
Old Feb 5, 2024 | 11:27 AM
  #4  
jjyoung's Avatar
Thread Starter
Newbie
 
Joined: Mar 2007
Posts: 4
Likes: 1
From: Vero Beach, FL
2013 E350 4matic
Thank you for this. I believe UCI in Position 1 refers to the Media Interface Module. Let me try putting a loop in that position and with any luck I'll get sound.
Can I ask what scanner you're using? I'm using a Foxwell NT644 you seem to be getting more info. I also don't think I can code anything.
Reply
Old Feb 5, 2024 | 07:15 PM
  #5  
CaliBenzDriver's Avatar
Out Of Control!!
Community Builder
Community Influencer
Liked
Community Favorite
 
Joined: Apr 2019
Posts: 12,091
Likes: 6,868
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
cReader

Originally Posted by jjyoung
Thank you for this. I believe UCI in Position 1 refers to the Media Interface Module. Let me try putting a loop in that position and with any luck I'll get sound.
Can I ask what scanner you're using? I'm using a Foxwell NT644 you seem to be getting more info. I also don't think I can code anything.
Lately our favorite pet scanner is the "cReader Elite for Benz by Launch Co.

I have the portrait model and now a Landscape version has been released running the exact same Benz database.
It's a $150 unit running a fast version of customized Android with touch screen.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 11:19 AM.

story-0
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-1
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-2
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-3
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-4
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-5
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-6
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-7
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-8
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-9
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE