USB and Aux in center console stopped working

RobG_M340 · 02-01-2018, 07:47 PM

Hey All,

My USB and Aux in my console has stopped working (the 12v cigarette power outlet next to it still works). All other audio functions work (including bluetooth). Any ideas what is wrong or how I can fix this? Is it a fuse?

Some background, around the time it went it out ... 1) my battery was going bad and constantly losing the time or all out dying and 2) at one point I got an SOS malfunction error, but that went away on it's own. The battery has since been replaced.

Thanks in advance!!

ctuna · 02-01-2018, 11:09 PM

In a US 08 the USB come through the Mulf 2 Hi module
and also passes through a USB Hub at least in an Idrive car.

You could try finding the fuses for those.
USB Hub = F13
TCU or ULF =F26 or F59 not sure on this one.

If you have SOS you could have both a bluetooth
TCU and a Mulf.

nagrande · 02-14-2018, 01:12 PM

My Aux connection stopped working along with my Bluetooth and SOS call displays a warning light at start up. This happened about a year ago, everything else works and seems to be fine. Biggest headaches are the loss of hands free calling, aux input and the SOS warning every time I start the car. On the Idrive the AUX volume is shaded out grey. Any advice?
I purchased a used TCS controller for in the trunk but I am worried that changing it out will make the situation worse, I don't want to lose the radio or navigation.

ptpending · 02-14-2018, 01:28 PM

it is seems that fuse which powers tcu and mulf in trunk died because aux and sos functions are on different modules until 2010/09 man date

lucek95 · 03-01-2018, 11:14 AM

Hi! Sorry for the bump

I have e92 335 XI made for NA region and my aux and usb wasn't working since I bought the car. I changed the socket for aux and usb, wiring looked ok. However I couldn't get it to work, I even got the Y cable :P Do you guys know what fuse is responsible for this socket in armrest? Or is it just connected to the radio (it is bmw professional logic 7 without navi)?

FYI I have it normally on radio display Radio/CD/Aux settings and while on aux I have checked the volume but all I can hear when turning it up is white noise. While I'm connected to the socket (usb + aux) - the usb port is not charging my phone.

Do you think is it the fuse or some wiring got old?

Thanks for any responses!

ptpending · 03-01-2018, 02:06 PM

the module to which usb and aux connected in that configuration can die
you can dig this forum a little, there are plenty topics and post about dead mulf2high

02-01-2018, 07:47 PM	#1
RobG_M340 Private First Class 53 Rep 152 Posts Drives: '21 M340xi Join Date: Jun 2010 Location: N. Miami Beach, FL iTrader: (0) Garage List 1973 Jeep CJ5 [0.00] 2021 BMW M340xi [0.00]	USB and Aux in center console stopped working Hey All, My USB and Aux in my console has stopped working (the 12v cigarette power outlet next to it still works). All other audio functions work (including bluetooth). Any ideas what is wrong or how I can fix this? Is it a fuse? Some background, around the time it went it out ... 1) my battery was going bad and constantly losing the time or all out dying and 2) at one point I got an SOS malfunction error, but that went away on it's own. The battery has since been replaced. Thanks in advance!!
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02-01-2018, 11:09 PM	#2
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	In a US 08 the USB come through the Mulf 2 Hi module and also passes through a USB Hub at least in an Idrive car. You could try finding the fuses for those. USB Hub = F13 TCU or ULF =F26 or F59 not sure on this one. If you have SOS you could have both a bluetooth TCU and a Mulf. Last edited by ctuna; 02-01-2018 at 11:46 PM..
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02-14-2018, 01:12 PM	#3
nagrande Registered 0 Rep 1 Posts Drives: 2009 e93 Join Date: Feb 2018 Location: New York, NY iTrader: (0)	Aux input, bluetooth and SOS call stopped working My Aux connection stopped working along with my Bluetooth and SOS call displays a warning light at start up. This happened about a year ago, everything else works and seems to be fine. Biggest headaches are the loss of hands free calling, aux input and the SOS warning every time I start the car. On the Idrive the AUX volume is shaded out grey. Any advice? I purchased a used TCS controller for in the trunk but I am worried that changing it out will make the situation worse, I don't want to lose the radio or navigation.
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02-14-2018, 01:28 PM	#4
ptpending Colonel 456 Rep 2,747 Posts Drives: e91 Join Date: Dec 2013 Location: Poland iTrader: (1)	it is seems that fuse which powers tcu and mulf in trunk died because aux and sos functions are on different modules until 2010/09 man date __________________ E81 2007 130i 6cylinder Montego blue Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes.
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03-01-2018, 11:14 AM	#5
lucek95 Registered 0 Rep 3 Posts Drives: E92 335 XI Join Date: Mar 2018 Location: Poland iTrader: (0)	Hi! Sorry for the bump I have e92 335 XI made for NA region and my aux and usb wasn't working since I bought the car. I changed the socket for aux and usb, wiring looked ok. However I couldn't get it to work, I even got the Y cable :P Do you guys know what fuse is responsible for this socket in armrest? Or is it just connected to the radio (it is bmw professional logic 7 without navi)? FYI I have it normally on radio display Radio/CD/Aux settings and while on aux I have checked the volume but all I can hear when turning it up is white noise. While I'm connected to the socket (usb + aux) - the usb port is not charging my phone. Do you think is it the fuse or some wiring got old? Thanks for any responses!
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03-01-2018, 02:06 PM	#6
ptpending Colonel 456 Rep 2,747 Posts Drives: e91 Join Date: Dec 2013 Location: Poland iTrader: (1)	the module to which usb and aux connected in that configuration can die you can dig this forum a little, there are plenty topics and post about dead mulf2high __________________ E81 2007 130i 6cylinder Montego blue Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes.
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