E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > SOS Malfunction with No Sound / Chimes - Cannot Diagnose



Reply
 
Thread Tools Search this Thread
      04-28-2021, 01:00 PM   #23
ctuna
Lieutenant General
2033
Rep
13,348
Posts

Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

iTrader: (0)

The cables don't Fail the Most Bus modules Fail.
As far as cable's failing there have been a couple of cases of
Rodents eating into them .
Sos failure and no sound are the common symptoms.
When one module fails on the Most Bus all the others cease to function
because it is a Ring Bus and the failing module breaks the Ring.
Appreciate 0
      05-08-2021, 09:30 AM   #24
LivinLrge
First Lieutenant
LivinLrge's Avatar
United_States
217
Rep
352
Posts

Drives: M4 Competition
Join Date: Apr 2012
Location: West Palm Beach

iTrader: (3)

Garage List
2021 BMW M4 Comp  [0.00]
2011 335is  [9.83]
Thank you for the guide. ctuna

Worked perfectly and ended up being the last connector under the driver side panal..it was simply disconnected. It is a short wire and if you take to be scanned it seems it was not plugged back in...

Also a note on the amp led color, it is YELLOW and there is a red power indicator to the right of the blinking led, which for most people would be caution but the amp is working just fine as long as it's blinking.

I would check the cable under the dash first before dismantling your trunk as the dash wire took 5 mins and removing the amp and panels in the trunk took about 30.
Appreciate 0
      10-22-2021, 10:06 PM   #25
Jaye820
New Member
0
Rep
11
Posts

Drives: BMW 335
Join Date: Oct 2021
Location: Nj

iTrader: (0)

I know this is an old thread. My radio only works in accessory mode. Has anyone experienced this?
Appreciate 0
Reply

Bookmarks

Tags
audio, chimes, malfunction, most system, no sound, sos


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:54 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST