Notices
Audio & Electronics Use this forum to discuss audio and electronic upgrades for your Mercedes-Benz.
Sponsored by:
Sponsored by: Innova

ML Sound Issue

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 21, 2007 | 05:47 PM
  #1  
CarrsML5's Avatar
Thread Starter
Newbie
 
Joined: Nov 2007
Posts: 4
Likes: 0
ML500
Exclamation ML Sound Issue

While driving my 2004 ML500, the sound completely cut out. This includes the navigation voice prompts. I have no sound and the HU isn't detecting the cd changer. Everything is factory and I've only had the car for a few months. My mechanic had mentioned something on earlier year ML's that was in the rear (next to the changer) that could come loose and would cause the stereo to cut out the speakers and the changer. He now tells me this year the same device is contained within the HU. If anyone has any advice or insight into this dilemma, please help. I have a feeling that I'll have to replace the HU or buy something after market.
Reply
Old Nov 22, 2007 | 03:17 AM
  #2  
Diesel Benz's Avatar
MBWorld Fanatic!
15 Year Member
 
Joined: Dec 2006
Posts: 6,494
Likes: 334
From: Europe
223.168 & 213.012 & 906.633 & 214.005
You must have a fibre based system, it could be that some of the fibre cables have bent or come out of their connectors.

Changing to an after market HU may not be straightforward if you have a phone, CDC and/or other equipment on the ring. You did not mention if you have sound system, it may then be that you don't have speaker wires at the rear of the HU.
Reply
Old Nov 22, 2007 | 10:45 AM
  #3  
CarrsML5's Avatar
Thread Starter
Newbie
 
Joined: Nov 2007
Posts: 4
Likes: 0
ML500
I haven't added anything "after market" to the vehicle. It has the Bose upgraded sound system and the Mercedes phone. I can't use the phone because of the issues with the V60 and the out-dated connectivity. I appreciate any help anyone can give. I'm just trying to get sound back.
Reply
Old Nov 22, 2007 | 05:35 PM
  #4  
Richard's Avatar
MBWorld Fanatic!
 
Joined: Nov 2001
Posts: 1,148
Likes: 16
From: Berkshire, UK
2004 SL55, 2015 A250d, 2016 GLC250d
Originally Posted by CarrsML5
I haven't added anything "after market" to the vehicle. It has the Bose upgraded sound system and the Mercedes phone. I can't use the phone because of the issues with the V60 and the out-dated connectivity. I appreciate any help anyone can give. I'm just trying to get sound back.
Sounds like your fibre optics is messed up. There is a loop, so if anything fails on it, or any connector breaks, nothing on D2B works.

With Star diagnosis you can work out where the break/broken item is.

Richard
Reply
Old Nov 22, 2007 | 07:34 PM
  #5  
CarrsML5's Avatar
Thread Starter
Newbie
 
Joined: Nov 2007
Posts: 4
Likes: 0
ML500
Thanks for the help, but I'm not exactly sure what the D2B is and is there anywhere that I can take the car to have the diagnostics done other than the dealer. I'm trying to avoid a large bill for something as ridiculous as this. I do thank you though for your input.
Reply
Old Nov 22, 2007 | 08:07 PM
  #6  
Richard's Avatar
MBWorld Fanatic!
 
Joined: Nov 2001
Posts: 1,148
Likes: 16
From: Berkshire, UK
2004 SL55, 2015 A250d, 2016 GLC250d
Originally Posted by CarrsML5
Thanks for the help, but I'm not exactly sure what the D2B is and is there anywhere that I can take the car to have the diagnostics done other than the dealer. I'm trying to avoid a large bill for something as ridiculous as this. I do thank you though for your input.
D2B is the fibre network that goes round the car's audio system, connected the COMAND to the voice recognition to the phone to the CD changer to the sound system and back again

It is likely something on that loop has failed, so if that is the case its not going to be cheap as something needs replaceing. (the phone unit being the cheapest at a couple of hundred $ or more)

It may be , of course, that some plug has dropped out, and someone without the specialist tools the dealer has may be able to find it. Its unlikely because they clip in place, but if any are likely to come loose its the one that connects the CD changer in the trunk, or possibly if youre phone system control unit is under the right front seat that one. The plugs are black with 2 orange leads coming out, which are fibre and must not be bent too much or sharply.

So, you either need a dealer, or an indepedant workshop with the Star Diagnosis system.

If you are in UK I can suggest one south west of London a bit, and one in Poole in Dorset. But I think you are not.

Richard
Reply
Old Nov 23, 2007 | 03:06 PM
  #7  
CarrsML5's Avatar
Thread Starter
Newbie
 
Joined: Nov 2007
Posts: 4
Likes: 0
ML500
Richard - thank you very much. I'll update you as to what the issue is and how i solve it.
Reply
Old Nov 23, 2007 | 04:14 PM
  #8  
Diesel Benz's Avatar
MBWorld Fanatic!
15 Year Member
 
Joined: Dec 2006
Posts: 6,494
Likes: 334
From: Europe
223.168 & 213.012 & 906.633 & 214.005
Originally Posted by CarrsML5
I haven't added anything "after market" to the vehicle. It has the Bose upgraded sound system and the Mercedes phone. I can't use the phone because of the issues with the V60 and the out-dated connectivity. I appreciate any help anyone can give. I'm just trying to get sound back.
Yes I understand the car is "original" at the moment. I understood you were thinking of fixing the issue with a new after market head unit where I just wanted to comment that this would not necessarily be straightforward.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-1

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-2

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-3

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-4

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-5

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-6

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-7

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
story-8

Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

 Verdad Gallardo
story-9

8 Mercedes Models With Poor Reliability Records

 Verdad Gallardo
Old Nov 23, 2007 | 04:17 PM
  #9  
Diesel Benz's Avatar
MBWorld Fanatic!
15 Year Member
 
Joined: Dec 2006
Posts: 6,494
Likes: 334
From: Europe
223.168 & 213.012 & 906.633 & 214.005
Some basic info about the Domestic Digital Bus (D2B):
http://www.mercedestechstore.com/pdf...2003-09-04.pdf

You might be able to check the connectors yourself, would just need to know which devices are on the fibre ring and where those are located.
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 08:09 AM.

story-0
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-1
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-2
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-3
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-4
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
story-5
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-6
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-7
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE
story-8
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

Slideshow: The 2027 update adds a fully digital steering system, revised styling, and potential charging upgrades as the company looks to revive interest in the luxury EV.

By Verdad Gallardo | 2026-04-04 10:24:38


VIEW MORE
story-9
8 Mercedes Models With Poor Reliability Records

Slideshow: From problematic air suspensions to early dual-clutch transmission issues, these specific models and years stand out as the least dependable modern Mercedes vehicles.

By Verdad Gallardo | 2026-03-26 18:08:10


VIEW MORE