2014 DB9 B&O sound system not working - 6SpeedOnline - Porsche Forum and Luxury Car Resource

Go Back  6SpeedOnline - Porsche Forum and Luxury Car Resource > British > Aston Martin
Reload this Page >

2014 DB9 B&O sound system not working

Aston Martin DB7, DB9, DBS, Vantage V8, Vanquish, and Classic models
Sponsored by:

2014 DB9 B&O sound system not working

  #1  
Old 11-03-2018, 11:33 AM
Registered User
Thread Starter
Join Date: Nov 2018
Location: Long Beach
Age: 52
Posts: 7
Rep Power: 0
erwinrafar is an unknown quantity at this point
2014 DB9 B&O sound system not working

B&O Sound system stopped working. I had an iPod plugged in the cubby and it blew the 20A cubby fuse. Replaced the fuse but the radio will not operate. When I press On/Off, I can click Mode and see the optional inputs (CD/AUX/USB etc...) but the tweeters do not rise and audio system does not turn on. No bluetooth; and still no power in cubby (USB or any input). Any ideas? Is there a 2nd infotainment fuse box to check? Thanks in advance.
 
  #2  
Old 11-03-2018, 06:51 PM
Registered User
Join Date: Jun 2009
Location: Northern CT
Posts: 1,849
Rep Power: 117
XJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond repute
Sounds like a bad Sirius module. When it fails, it takes the rest of the audio system with it.
 
  #3  
Old 11-03-2018, 10:31 PM
J doubleU's Avatar
Registered User
Join Date: Mar 2013
Location: So Cal
Posts: 725
Rep Power: 38
J doubleU is a jewel in the roughJ doubleU is a jewel in the roughJ doubleU is a jewel in the roughJ doubleU is a jewel in the rough
If your referencing the 20amp fuse for the power port, it is not a related circuit to the infotainment system. If you did replace the correct fuse it has failed again, or there is more going on. No sound, no tweeters the network has been compromised. Component fault as XJRS has mentioned or additional power/ground interrupt. Year and model would help. Have you had other issues and what is the state of the battery?
 
  #4  
Old 11-04-2018, 09:01 AM
Registered User
Thread Starter
Join Date: Nov 2018
Location: Long Beach
Age: 52
Posts: 7
Rep Power: 0
erwinrafar is an unknown quantity at this point
XJRS - Thank you for your comment. Pardon my ignorance, is the Sirius module the satellite radio? Or is it a different device? Do you know if there is a separate fuse for Sirius? Or is there a fuse box under passenger side as I saw referenced in DB9 workshop manuals?
 
  #5  
Old 11-04-2018, 09:09 AM
Registered User
Thread Starter
Join Date: Nov 2018
Location: Long Beach
Age: 52
Posts: 7
Rep Power: 0
erwinrafar is an unknown quantity at this point
J Double U - thank you for your comment too. The 20A fuse did not fail after I replaced it. I did notice the charging cable connected to USB port in cubby have burn marks. So I suspect my iPhone charging was what caused the short-circuit. And you are correct, the Beosound inputs are on a different circuit than power. I tested the cig lighter on back side of cubby and it works. I checked all fuses in trunk and they are all fine. Navigation system, climate controls, all other electrical systems work fine. No battery issues past or present. This is for a 2014 DB9.
 
  #6  
Old 11-04-2018, 10:06 AM
Registered User
Join Date: Jun 2009
Location: Northern CT
Posts: 1,849
Rep Power: 117
XJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond reputeXJRS Owner has a reputation beyond repute
Can't help you, other than to tell you that when my audio system failed to work (same symptoms as you describe), the culprit was a failed Sirius module which was located behind the right rear wheel liner on my Vanquish. Lots of trouble shooting on the dealer's part to narrow it down to that particular module. All the modules talk to each other in a fiber optic data loop and apparently when any module fails, the whole loop is taken down.
 
  #7  
Old 11-04-2018, 10:30 AM
Registered User
Join Date: Jan 2015
Location: Florida
Posts: 375
Rep Power: 20
MRCW will become famous soon enoughMRCW will become famous soon enough
Originally Posted by XJRS Owner View Post
Can't help you, other than to tell you that when my audio system failed to work (same symptoms as you describe), the culprit was a failed Sirius module which was located behind the right rear wheel liner on my Vanquish. Lots of trouble shooting on the dealer's part to narrow it down to that particular module. All the modules talk to each other in a fiber optic data loop and apparently when any module fails, the whole loop is taken down.
I had something similar happen to me with another brand, I was able to isolate the problem by taking each item on the MOST fiber loop out and in my case it was a bad CD changer...

You may be able to try this is you are handy
 
  #8  
Old 11-04-2018, 02:39 PM
J doubleU's Avatar
Registered User
Join Date: Mar 2013
Location: So Cal
Posts: 725
Rep Power: 38
J doubleU is a jewel in the roughJ doubleU is a jewel in the roughJ doubleU is a jewel in the roughJ doubleU is a jewel in the rough
You should check fuses in the passenger footwell compartment, they do not show those in the owners book. I believe there is a USB circuit fuse that may relate to your fault. Passengers footing, peel back the carpet from the top and there is 7 Torx 30 headed screws to remove the aluminum panel. For access to the fuses. If you do not have a reference to them, carefully check each fuse 1 by 1. Hopefully you have removed the iPhone cable and discarded it.
 
  #9  
Old 11-04-2018, 02:58 PM
Registered User
Thread Starter
Join Date: Nov 2018
Location: Long Beach
Age: 52
Posts: 7
Rep Power: 0
erwinrafar is an unknown quantity at this point
Thanks for the tip on passenger fuse box. I will check it out. I have discarded bad iPhone cable :-)...
 
  #10  
Old 11-05-2018, 10:04 AM
Registered User
Thread Starter
Join Date: Nov 2018
Location: Long Beach
Age: 52
Posts: 7
Rep Power: 0
erwinrafar is an unknown quantity at this point
MRCW - would greatly appreciate any tips on where to begin with troubleshooting individual components connected to the MOST fiber loop. How do I test each unit to determine if it is faulty? Note, I checked all fuses under passenger footwell and all are good.
 
  #11  
Old 11-07-2018, 03:27 PM
J doubleU's Avatar
Registered User
Join Date: Mar 2013
Location: So Cal
Posts: 725
Rep Power: 38
J doubleU is a jewel in the roughJ doubleU is a jewel in the roughJ doubleU is a jewel in the roughJ doubleU is a jewel in the rough
Cross your fingers it's not the B&O amplifier. They have been known to cause trouble in other makes.
 
  #12  
Old 11-07-2018, 06:59 PM
irish07's Avatar
Registered User
Join Date: Sep 2011
Location: British Columbia, Canada
Posts: 1,426
Rep Power: 100
irish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond reputeirish07 has a reputation beyond repute
Originally Posted by erwinrafar View Post
MRCW - would greatly appreciate any tips on where to begin with troubleshooting individual components connected to the MOST fiber loop. How do I test each unit to determine if it is faulty? Note, I checked all fuses under passenger footwell and all are good.
Unplug the connector and see if you have that pretty light in the line, no light = No MOST. I usually look for the MOST connector that still has signal then replace the module with a MOST loop or MOST tester and loop the feed, the loop/tester acts like the module and your able to see if other systems come to life. So lets say your SAT was pullling down the most. If you replaced the SAT with your loop tester, the radio will come back to life but the SAT will still not work, plug back the SAT and everything cuts out..aka you would need a SAT module.

Also if you need the B&O fuses, there in the rear boot, there's a F18 30amp and F5 30amp and SAT+Nav is F11 10amp. If all fuses are good and have 12v, pull the battery ground off and do a hard reset, if all still fails, get it to the dealer and have it scanned for faults. Very possibly the B&O module just needs to be updated and at worst a module needs to be replaced.
 
  #13  
Old 11-08-2018, 11:14 AM
Registered User
Thread Starter
Join Date: Nov 2018
Location: Long Beach
Age: 52
Posts: 7
Rep Power: 0
erwinrafar is an unknown quantity at this point
Thank you for the guidance. Had tried a few troubleshooting tasks to no avail and decided to have Aston Martin service troubleshoot and repair. Audio module failed. Awaiting replacement. Thank you to all contributions.
 
  #14  
Old 11-08-2018, 01:08 PM
Registered User
Join Date: Jun 2012
Location: Los Angeles
Posts: 540
Rep Power: 28
rohnin is on a distinguished road
Let us know how much it ends up costing!
 
  #15  
Old 11-10-2018, 01:28 AM
Registered User
Join Date: Jan 2006
Location: Bay Area, CA
Posts: 1,358
Rep Power: 72
spyder997s is a glorious beacon of lightspyder997s is a glorious beacon of lightspyder997s is a glorious beacon of lightspyder997s is a glorious beacon of lightspyder997s is a glorious beacon of lightspyder997s is a glorious beacon of light
I had the same thing happen to my Aston recently also: failed am/fm module took down the entire system!

I resolved it temporarily (and verified that the am/fm module was the culprit) by placing a MOST fiber optic loop on the connector.

My system is working again: navigation, iPod, CD player all functioning again with only the am/fm not working.

I ordered a used replacement part and will install it to fully resolve.

This was such a pain to diagnose. The quickest way to get likely suspects is to use the AMDS (Aston Martin computer system) to show which module isn't communicating first. Fortunately my indy mechanic had one and it narrowed down which modules were suspected of failure.
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: 2014 DB9 B&O sound system not working


Join 6SpeedOnline
Visit our Sponsors

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.