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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > AUX activated but still not working :(



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      08-01-2021, 01:12 PM   #1
OrestasX
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Hello everyone !

I have BMW 320d 2007 and I have problem with aux.

When I bought the car already AUX did not work(just didn't show "AUX" on the screen). Later I bought INPA and I activate AUX with "Ncs Expert" program. The AUX function appears on the screen, but the music still does not play, just silent from speakers . What else to check?

My video:


Other info.
According to VIN code:
1. my car have AUX BMW PROFESSIONAL
2. AUX female plug is good (checked with tester)

And sorry for my English skills
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      08-01-2021, 02:00 PM   #2
ctuna
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Aux in cars with usb (6FL)comes from the Mulf 2 Hi or combox in most
setups. If you activated it and it is not wired to the plug well it's not
connected physically .
Since all the configurations can vary you better check where the actual
wiring goes.

I would read your Head Unit files and search for everything to do with the Aux.
Also the files for the Mulf 2 hi or combox or whatever is in the trunk .
Sometimes there is a combo of a Tcu and a Mulf.
Also check which modules you have in the Trunk plus the wiring stuff.

What are the pc boards for?

Last edited by ctuna; 08-01-2021 at 02:05 PM..
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      08-01-2021, 02:32 PM   #3
OrestasX
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Quote:
Originally Posted by ctuna View Post
Aux in cars with usb (6FL)comes from the Mulf 2 Hi or combox in most
setups. If you activated it and it is not wired to the plug well it's not
connected physically .
Since all the configurations can vary you better check where the actual
wiring goes.

I would read your Head Unit files and search for everything to do with the Aux.
Also the files for the Mulf 2 hi or combox or whatever is in the trunk .
Sometimes there is a combo of a Tcu and a Mulf.
Also check which modules you have in the Trunk plus the wiring stuff.

What are the pc boards for?
[IMG]https://ibb.co/WymFW9M[/IMG]

I will check wirring tomorrow, but still i think all wires should be from the factory already because according to the VIN it says that there is a "USB / audio interface (USB-AUDIO-SCHNITTSTELLE)".

Can there be my programming error?
I followed this video (
)
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      08-01-2021, 04:00 PM   #4
ctuna
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Could be a European configuration or Radio thing.
Everybody here has the Pro Radio or a idrive best to ask from Euro sources.
Can't see how they would have and aux and not enable it .
But then again they do that with the steering wheel button's

Check for modules in the Trunk .
Go to Inpa Functional jobs to have a look at
what Inpa see's in the way of modules.
Read the contents of the modules with Ncsexpert and look
and search for Aux enabling entry's within the files.

You may have confused things if Aux was already enabled in the Trunk modules.
Was the USB or is the USB working?

Last edited by ctuna; 08-01-2021 at 05:40 PM..
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