[intel1]

Ctuna i try that and it did not help. Yesterday i ran DIS57 and ran error codes and this is what my car showed up.
TCU-A391 TCU: Main telephone aerial fault---- fault currently present
TCU-A390 TCU: Emergency aerial, fault--------Fault currently present
TCU- A369TCU: GPS Aerial, Open Circuit-------Fault currently not present.
Do u think i have a bad Shark fin Antenna on the top.
Thank you for the help .

[intel1]

Originally Posted by ctuna

http://www.e90post.com/forums/attach...2&d=1260829447

electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU

I would check and reseat connections at the TCU/MULF first the antenna
is in the sharkfin I think.

Ctuna i try that and it did not help. Yesterday i ran DIS57 and ran error codes and this is what my car showed up.
TCU-A391 TCU: Main telephone aerial fault---- fault currently present
TCU-A390 TCU: Emergency aerial, fault--------Fault currently present
TCU- A369TCU: GPS Aerial, Open Circuit-------Fault currently not present.
Do u think i have a bad Shark fin Antenna on the top.
Thank you for the help .

[intel1]

Guys here is the update.
Today i updated my VO, i deleted $639 off of my VO and then i defaulted KOMBI using Expertmode.
I also have BMW_ASSIST_RAD2
nicht_aktiv
BMW_HOTLINE_RAD2
nicht_aktiv

TCM_ALIVE_MONITOR
nicht_active
TCM_ID_MONITOR
nicht_active
I also did add +TELD to VO
But i am still getting SOS error, Am i suppose to change some other options too, Like disable phone ring option or so.
I did run DIS57 and i am not getting any error code since i deleted $639 option on my vo. My radio, BT, and voice commands are all working, plus i dont have BMW assist or phone service. Ment to say that my bmw Assist is expired and i dont use it.
Any help will be greatly appreciated.
Thank you.

[ctuna]

Well all those things are in the Shark Fin

[intel1]

Ctuna should i replace shark fin. If doing so do i need to code it r just needs to swap and no coding needed.

[ctuna]

I would try to verify it has power before replacing.
I haven't heard very many or any reports of this item
failing I don't think it needs coding but can't be sure.

[intel1]

Originally Posted by ctuna

I would try to verify it has power before replacing.
I haven't heard very many or any reports of this item
failing I don't think it needs coding but can't be sure.

How can I check power, so I unplug wire at shark fin and check with voltmeter, if so which wires do I check for power.

[ctuna]

http://www.e90post.com/forums/attach...2&d=1260829447

page 20

which makes me think maybe it just and antenna wire.

[intel1]

Originally Posted by ctuna

http://www.e90post.com/forums/attach...2&d=1260829447

page 20

which makes me think maybe it just and antenna wire.

Thanks man I will check the wires again and tone em all out. I appreciate your help.

[oRIDDLERo]

There is actually a great blog post and YouTube video explaining this in detail. They even have a pre-trimmed version of the MOST adapter now that comes ready to install out of the box.

The stock version bypass/loop requires you to carefully hack away at the plastic to get it to fit. I actually damaged my first unit trying to get it to fit.

Anyhow, here's the link: https://www.modsandprojects.com/bmw-...o-audio-error/

[ctuna]

Yeah but you will still have the friggen error in your instrument
cluster till you program SOS out if you have an SOS failure.
And you you can buy sat modules super cheap on ebay now.

[mweisdorfer]

Originally Posted by oRIDDLERo

There is actually a great blog post and YouTube video explaining this in detail. They even have a pre-trimmed version of the MOST adapter now that comes ready to install out of the box.

The stock version bypass/loop requires you to carefully hack away at the plastic to get it to fit. I actually damaged my first unit trying to get it to fit.

Anyhow, here's the link: https://www.modsandprojects.com/bmw-...o-audio-error/

You can get them on Amazon for $10.00

[oRIDDLERo]

This one is only $13 and it's universal and plug and play! Back when i bought the older ones for a few bucks less it has to be all kinds of cut up and trimmed to fit the adapter =/

https://www.amazon.com/gp/product/B0...QRCXE1QJR2TVE9

[Torgus]

Originally Posted by oRIDDLERo

This one is only $13 and it's universal and plug and play! Back when i bought the older ones for a few bucks less it has to be all kinds of cut up and trimmed to fit the adapter =/

https://www.amazon.com/gp/product/B0...QRCXE1QJR2TVE9

Forgive me for wanting to be spoon fed but what do I plug that into to get rid of this stupid SOS slash on my dash?

[ctuna]

Since anything on the Most Bus could be bad causing this
you have to rotate it though each device.

Sat , Mulf, TCU and Logic 7 amp if you have one.
There are a few more devices in the UK such as
DAB and the newer cars have a Combox instead or
a TCU/Mulf.

Logic 7
https://www.e90post.com/forums/showthread.php?t=1056432
http://www.bmwlogicseven.com/?p=3837
http://www.bmwgm5.com/
https://www.e90post.com/forums/showt...5#post24455335
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.google.fr/url?sa=t&rct=j&...slMu2A&cad=rjt
https://www.bmwgm5.com/Logic7_E90_91_92_93.htm
http://www.bimmerfest.com/forums/sho...d.php?t=982666

http://www.e90post.com/forums/attach...1&d=1209780605
Most
http://www.e90post.com/forums/showthread.php?t=727663
http://www.e90post.com/forums/showthread.php?t=347222
https://www.google.com/search?q=BMW+...VCkMqy2aCK09M:
http://www.1addicts.com/forums/showt...php?p=19256760
https://www.teacremotes.com/bmwgm5/
https://www.e90post.com/forums/showthread.php?t=347222

[Kcib0928]

So I'm new to the forum but I'm having the same problem. I bought the fiber optic feedback loops, since I have a 335is 2012 my car did not come with a satellite radio module I only have the TCU in the back along with the amp. At the front I have one of the optic fiber connectors and I used the feedback loop on that. But it still wouldn't solve the problem. It turned out that the TCU had not been sending the signal back to everything else. So I used one of the feedback loops but now I have no aux/Bluetooth but the chimes and radio works fine. Do I have to get the SOS malfunction coded out of the TCU or do I have to buy a new TCU? (Bought a used one off ebay and didn't fix the problem and owner said it worked)

[ctuna]

A 2012 would have come with a Combox not a TCU at least in the United
States. Aux , USB and streaming bluetooth Music , bluetooth phone is handled by that module in a 2012 in the US.
At some point some of this stuff was integrated into the head unit especially satellite radio.

Generally you can not pop in another module and have it work without programming.
Also you need to pop in the exact same type of module.
What apply to a 06 car does not necessarily apply to a 2012 car.
You need to find out what's in your Head Unit and which Head Unit
you have weather it be Idrive or ProRadio.

[Kcib0928]

Originally Posted by ctuna

A 2012 would have come with a Combox not a TCU at least in the United
States. Aux , USB and streaming bluetooth Music , bluetooth phone is handled by that module in a 2012 in the US.
At some point some of this stuff was integrated into the head unit especially satellite radio.

Generally you can not pop in another module and have it work without programming.
Also you need to pop in the exact same type of module.
What apply to a 06 car does not necessarily apply to a 2012 car.
You need to find out what's in your Head Unit and which Head Unit
you have weather it be Idrive or ProRadio.

So I have the iDrive head unit and I was wondering if there was something I could try with Bimmercode like activate or turn off different codes to get my aux to come back. Im just not sure what codes to try.

[DiskoSleaZe]

I just got this damn code too now. Should I buy that Amazon MOST adapter and try and find where it's coming from? I only care about my aux port as that's where I have my Bluetooth adapter plugged in. Nav and the screen functions work fine... just no radio functions Any insight would be great.

I have a 2007 335

[ctuna]

What do you mean by no Radio Functions do you mean no audio?
If you have the Logic 7 speaker and amp system any break in the
most Loop will cause loss of audio. If you have the Hi Fi system
it will not.
Aux may or may not come from the Mulf 2 hi depending on your options.
The Mulf 2 hi does aux and usb and is buried under the TCU in the early model years but the sos is in the TCU so bypassing the TCU would fix
sound and aux issures if you have Logic 7.
There are cheap optic loops on Amazon as you pointed out.

[DiskoSleaZe]

Originally Posted by ctuna

What do you mean by no Radio Functions do you mean no audio?
If you have the Logic 7 speaker and amp system any break in the
most Loop will cause loss of audio. If you have the Hi Fi system
it will not.
Aux may or may not come from the Mulf 2 hi depending on your options.
The Mulf 2 hi does aux and usb and is buried under the TCU in the early model years but the sos is in the TCU so bypassing the TCU would fix
sound and aux issures if you have Logic 7.
There are cheap optic loops on Amazon as you pointed out.

Yea I have no audio at all. Radio, USB, or aux. I usually have my BT adapter plugged into the USB for power, and the BT into the aux. I have nothing. I've read it his entire thread and kind of understand what to do...but i use this optic loop to isolate what's going on, and then what? Does it bypass whatever module is broke and just complete the loop? I'm not 100% of what to do....

[ctuna]

Entry number 37 in this thread has almost all you need to know about
troubleshooting problems on the Most Bus .
Please look at the videos and read the links.