[earlster]

I recently bought a 335is Convertible, it is an early model and has the CIC navigation, but is pre combox.
It has both an Aux and USB connector in the armrest, but they appear to not function. There is no power at the USB connector (USB stick with an LED doesn't light up), and when connecting my phone, or an bluetooth-aux adapter, to the Aux I don't get any sound.
When I select Front Aux in External Devices, it keeps playing music from the harddrive music collection, and the display changes to USB Active and the USB volume control, but I can't change that volume control.

The USB in the glove compartment is working to upload music to the hard drive.
And the 12V outlet in the armrest is also working just fine.

I've dug around the forum but haven't been able to find any hints on where to start trouble shooting. I'm fairly handy, and have replaced radios in other cars, including BMWs in the past.

[ctuna]

In most years the aux and usb come from the Mulf 2 Hi or a combination
of a TCU and a Mulf 2 hi in the trunk. If you have the 6 fl option this is always
true up to the years they started to integrate some of the functions in the Head
unit which occurred first in Europe I believe.(and towards the end of the e9x series)

With USB it is either Mulf 2 hi or a combination of Mulf 2 Hi up to the combox years.
The Mulf 2 hi is under the TCU in some configurations.

with 6fl programmed in the aux at the back of the radio is dead programmed out.
Run your vin through mdecoder.com and see if you have 6fl.

http://www.e90post.com/forums/showthread.php?t=1181654

[earlster]

I have

S609 Navigation System Professional
S615 Extended BMW Online Information
S620 Voice Control
S639 Preparation F Mobile Phone Cpl. USA/CDN
S645 BMW US Radio
S688 Harman/Kardon Surround Sound System
S693 Preparation BMW Satellite Radio
S697 Area-Code 1 For DVD
S6AA BMW TeleServices
S6AB Control, Teleservices
S6FL USB/audio Interface
S6UH Traffic Information

Prod. Date 2010-04-23

So just a few month before they moved to combox

I'll be digging a bit through the trunk to see if there are any loose connections at the Mulf

[earlster]

Apparently the MULF was replaced due to water damage 2 years ago. Found this in the extensive service docs that came with the car.

Digging through the trunk, there is both a MULF and a TCU. Could the MULF need to be coded? Or maybe it's a bad unit?
All the cables look good, but I don't know which pins are for the USB and AUX ports.

[ctuna]

If you have a coding setup Standard tools it would be worth running
functional jobs from Inpa to see if the Mulf is alive then reading the coded
values with NCS expert and perhaps default coding 6fl.

There used to be tis online before bmw or somebody pulled it that allowed you to
look at all the wiring and block diagram pinout's .
Now you need Ista D to get to the diagrams or search the Forums for related Threads.

The earlier idrive version also had a USB Hub that split USB into two outlets the one in the
Glove and the one in the center console.
It was a small board next to the FRM I believe.

[earlster]

My old laptop had a BMW Tools setup. I found the old orignal files, and am re-installing the whole thing. Wish me luck

From what I found on a different forum https://5series.net/forums/e60-discu...-132312/page2/ it looks like I might have a bad MULF.

I'll update here once I had time to run more diagnostics.

Using one of the various Android tools I also found these two fault codes in the CIC section. E1CF and E1DF, but I can't find a proper description for either. E1CF seems to be related to MOST coding.

[ctuna]

I use the Bimmergeeks version of Standard tools.
It seems to be still there for now.
They used to have ista up to and there version was more compact
than others but no more.
Recently BMW or one of the resellers has been shutting the
donwloads down.
There are many Mulf to combox conversion threads some have
info on the pinouts .
The coding subforum here should also be of some use.
There was a thread that had all the various downloads for Ista d / plus.
Ista D is great because it has all the procedure diagrams part no's etc
and is all in English.
Ista is like and online manual with guided trouble shooting , shop manual plus.

https://www.e90post.com/forums/showthread.php?t=1847924

diagnostic manual ista/inpa
https://www.google.com/url?sa=t&rct=...xo19teM9vkTF-C
https://www.google.com/url?sa=t&rct=...7x8H3pN8h1fMuF
https://bimmerprofs.com/diagnostics-inpa-part-1/
https://www.google.com/url?sa=t&rct=...lkXEhlQYy4i9Nb
https://www.bimmerforums.com/forum/s...-P-actually-do
https://www.bimmerfest.com/forums/at...1&d=1590283589
https://www.google.com/url?sa=t&rct=...kBbC27TJLX3BGe
https://www.google.com/url?sa=t&rct=...WekqhcC6hsgK2c
primary links
https://www.e90post.com/forums/showthread.php?t=1681573
https://www.nathansbmwworkshop.com/b...or-dean-videos
ista problems
https://www.e90post.com/forums/showthread.php?t=1661945
https://www.e90post.com/forums/showthread.php?t=1581663

[detelloo]

Originally Posted by earlster

I recently bought a 335is Convertible, it is an early model and has the CIC navigation, but is pre combox.
It has both an Aux and USB connector in the armrest, but they appear to not function. There is no power at the USB connector (USB stick with an LED doesn't light up), and when connecting my phone, or an bluetooth-aux adapter, to the Aux I don't get any sound.
When I select Front Aux in External Devices, it keeps playing music from the harddrive music collection, and the display changes to USB Active and the USB volume control, but I can't change that volume control.

The USB in the glove compartment is working to upload music to the hard drive.
And the 12V outlet in the armrest is also working just fine.

I've dug around the forum but haven't been able to find any hints on where to start trouble shooting. I'm fairly handy, and have replaced radios in other cars, including BMWs in the past.

Originally Posted by earlster

I recently bought a 335is Convertible, it is an early model and has the CIC navigation, but is pre combox.
It has both an Aux and USB connector in the armrest, but they appear to not function. There is no power at the USB connector (USB stick with an LED doesn't light up), and when connecting my phone, or an bluetooth-aux adapter, to the Aux I don't get any sound.
When I select Front Aux in External Devices, it keeps playing music from the harddrive music collection, and the display changes to USB Active and the USB volume control, but I can't change that volume control.

The USB in the glove compartment is working to upload music to the hard drive.
And the 12V outlet in the armrest is also working just fine.

I've dug around the forum but haven't been able to find any hints on where to start trouble shooting. I'm fairly handy, and have replaced radios in other cars, including BMWs in the past.

Have you tried going through the fuses related to the the systems. My Bluetooth phone fuse caused my USB and cig not to work.

[earlster]

Wow, it's been a while since I was here, spent way to much time on my sons E46 Coupe, instead of my own car.
- I checked all the fuses, and they are all good.
- Running NCSExpert and reading the FA things seem strange, see attached screenshot. No $6FL, am I doing this right?



Here is the link to the screenshot, it won't show the image otherwise. https://1drv.ms/u/s!AtN5gY5p70VQj4Fi...hHoig?e=mdd8f2

[DavesZed]

Originally Posted by earlster

Wow, it's been a while since I was here, spent way to much time on my sons E46 Coupe, instead of my own car.
- I checked all the fuses, and they are all good.
- Running NCSExpert and reading the FA things seem strange, see attached screenshot. No $6FL, am I doing this right?



Here is the link to the screenshot, it won't show the image otherwise. https://1drv.ms/u/s!AtN5gY5p70VQj4Fi...hHoig?e=mdd8f2

That's not a full VO list, use INPA.....
Open INPA
Click on E89 (if there is an E90 option use that instead)
Click on Functional Jobs
Click SHIFT and F2 for Vehicle Data
and that will bring up the full VO list

This fault is sounding like a faulty MULF, but as mentioned above if this is the issue it would probably be just as easy to swap over to a Combox instead of fitting another MULF. Loads of How-To's on here as to how to do it complete with the pin-outs for swapping the wires over (without paying a small fortune for an adaptor lead)

[ctuna]

Also Mdecoder.com will list all installed options from the factory
by inputing the Vin.

Inpa functional jobs F2 and F3 should list all installed modules
and tell you that they are talking to the rest of the car.

[earlster]

Thanks for the hints, I got the below from ISTA+

So I do have $6FL

Sonderausstattung
01CA Selektion COP-relevanter Fahrzeuge
02MP 19'' M Leichtmetallräder Doppelspeiche 225 M mit Mischbereifung
02TC Steptronic Sport Getriebe mit Doppelkupplung
02VB Reifendruck-Kontrolle
0302 Alarmanlage
0319 Integrierte Universal-Fernbedienung
0322 Komfortzugang
0430 Innen- und Außenspiegelpaket
0431 Innenspiegel, automatisch abblendend
0459 Sitzverstellung, elektrisch, mit Memory
0481 Sportsitze für Fahrer und Beifahrer
0488 Lordosenstütze für Fahrer und Beifahrer
0494 Sitzheizung für Fahrer und Beifahrer
04NA Innenspiegel mit digitalem Kompass
04UT Durchladeöffnung mit integriertem Transportsack
04WA Interieurleisten Aluminium Glaciersilber dunkel
0502 Scheinwerfer-Waschanlage
0508 Park Distance Control (PDC)
0521 Regensensor
0522 Xenon-Licht
0524 Adaptives Kurvenlicht
0534 Klimaautomatik
0544 Geschwindigkeitsregelung mit Bremsfunktion
0563 Lichtpaket
0570 Stärkere Stromversorgung
05AK LED-Lichtelemente
05DS Gepäckraumnotentriegelung
0609 Navigationssystem Professional
0615 Erweiterte BMW Online Information
0620 Spracheingabesystem
0639 Komplettvorbereitung Handy USA/CDN inklusive Telematik
0645 Radio-Steuerung US
0688 Harman Kardon Surround Sound System
0697 Area - Code 1 für DVD
06AA BMW Teleservices
06AB Steuerung BMW Teleservices
06FL USB-Audio-Schnittstelle
06UH Traffic Information
0704 M Sportfahrwerk
0715 M Aerodynamikpaket
07XA M Lederlenkrad mit Schaltwippen
0823 Heißland-Ausführung
0840 Hochgeschwindigkeitsabstimmung
0845 Akustische Gurtwarnung
0850 Zusätzliche Tankfüllung Export
0853 Sprachversion Englisch
0876 Funkfrequenz 315 MHz
08S4 Decodierung variable Lichtverteilung
0925 Versandschutzpaket
0992 Steuerung Kennzeichenbefestigung
0653 High Definition Radio
0655 Satellitentuner
B090 Batterie 90 Ah Werk

[earlster]

I also got the following error codes from it:

Code Beschreibung KM-Stand Vorhanden Klasse
00A6C8 JBE: Heckscheibenheizungsrelais 135432 nein
00CDA7 Botschaft (Status Rückwärtsgang, 0x3B0) fehlerhaft, Empfänger DME,
Sender FRM / LM
135440 ja
00A554 KOMBI: Botschaft (Telefon) fehlt 130120 nein
009E71 SMFA: Schalter Lehnenverriegelungskontakt 130088 nein

so A554 is the only one that's kind of related to comms, but it's just a missing phone code, so it shouldn't be the reason for this.

[earlster]

The 'Steuergereatebaum' / control unit tree shows the ULF-SBX-H as green.

https://1drv.ms/u/s!AtN5gY5p70VQj4Fj...GdLRg?e=Y0TMjD

[earlster]

I have one more guess, that there is an issue with the USB Hub, but since my car is a vert, it's under the floor and not easy to get to. Maybe one of these weekends.

I also bought an AVIN unit, and am wondering if I code out the $6FL and then plug the AUX from the AVIN into the CCC, is that something that has been done before? Pros, cons?

[DavesZed]

Originally Posted by earlster

I have one more guess, that there is an issue with the USB Hub, but since my car is a vert, it's under the floor and not easy to get to. Maybe one of these weekends.

I also bought an AVIN unit, and am wondering if I code out the $6FL and then plug the AUX from the AVIN into the CCC, is that something that has been done before? Pros, cons?

So you are not getting anything from the USB or AUX? So your idea of the USB hub may be at fault won't resolve the AUX issue as only the USB socket goes to the USB Hub and the AUX goes directly to the ULF.

Have you actually checked the USB/AUX socket to make sure both plugs are indeed plugged in? Worth a shot, you never know

For info I'm attaching the wiring diagram

[ctuna]

Year of the car will effect which modules the aux and usb come from
plus the type of head unit, idrive or pro radio in the US.
The 6FL option routes the aux and usb though the module in the Trunk
which could be either a Mulf or Combox. Then it is transmitted to the
Head Unit on the Most Bus . If you have a piggy back Head Unit it should
work as along as the Aux still functions cause that is what most of the piggy
back unit's do .
Piggy back unit's cannot be used with the original head unit removed.
And if you put in a none piggy back unit then everything must go through new
Head Unit.
There may be a usb hub or not depending on the year of the car .
I beleive there was no USB hubs with the Combox cars.
The Logic 7 system requires the Most bus be functional or a Most Bus adapter,
as the amp requires the fiberoptic Input.

There are coding options to code out 6fl that should activate the aux on the rear of the
Head Unit on some cars . I would investigate on the Coding subforum.

[earlster]

I went back at it today and checked connectivity between the armrest aux and the plug that goes into the mulf2 high. Left and Right have connectivity, GND doesn't, so that explains why my aux is not working.
Now, it appears that in order to get to the aux in the armrest I will have to take out the whole center console, which requires the removal of the rear seat console (it's a convertible) and the rear seats. This seems like a crazy amount of work, am I correct or is there an easier way to get there?
This makes it more and more likely that I will simply code out the armrest aux and use the aux on the CCC/headunit to get audio from the AVIN

[earlster]

Thanks everybody for you answers above. I ended up installing the Avin unit, and coding the aux to use the CIC headunit as mentioned here:
https://www.e90post.com/forums/showt...ght=delete+6fl
While I didn't fix the problem with the broken ground connection, I now have my music via Android Auto or Bluetooth, which was my motivation to make this all work.