2009 E92 TCU replacement and coding

m3wannabee · 12-09-2023, 11:54 AM

Hello all

Just a quick question,

The car in question is a 2009 335i xDrive pre-LCI if it matters.

My hands-free Bluetooth and other such functions have stopped working. I have traced the problem down to a busted telematics control unit. If I were to buy OEM used/refurbished TCU (not shelling out for a new one) and install it, would it have to be coded in any way? Or could I just slap it in and call it a day?

I am not talking about a combox retrofit or anything, just replacing the module with the same kind already in the car, same part numbers, etc.

If there is coding needed, could I be walked through the coding steps? I have BimmerGeeks standard tools.

Thanks for the help!

ctuna · 12-09-2023, 03:08 PM

You might as well get a used Mulf 2 hi or Combox you can find
them on Ebay.
That will give you USB . The TCU is pretty much useless now
that there is no 2g telephone.

Or you could get a Mr12volt adapter that gives you bluetooth phone
bluetooth streaming usb and sd card plus another aux.

https://www.e90post.com/forums/forumdisplay.php?f=27

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

TCU probably work right away for bluetooth if it's the only problem
Mulf I think requires the microphone connection to be re-pinned.

Go to the coding subforum for instructions on modifying the module
settings.(or stereo sub forum)

https://www.e90post.com/forums/forumdisplay.php?f=27

https://www.e90post.com/forums/forumdisplay.php?f=368
If you have idrive the next on to.
https://www.e90post.com/forums/forumdisplay.php?f=122

12-09-2023, 11:54 AM	#1
m3wannabee Registered 0 Rep 2 Posts Drives: 2009 BMW 335i xdrive Join Date: Jul 2023 Location: Boston Mass iTrader: (0)	2009 E92 TCU replacement and coding Hello all Just a quick question, The car in question is a 2009 335i xDrive pre-LCI if it matters. My hands-free Bluetooth and other such functions have stopped working. I have traced the problem down to a busted telematics control unit. If I were to buy OEM used/refurbished TCU (not shelling out for a new one) and install it, would it have to be coded in any way? Or could I just slap it in and call it a day? I am not talking about a combox retrofit or anything, just replacing the module with the same kind already in the car, same part numbers, etc. If there is coding needed, could I be walked through the coding steps? I have BimmerGeeks standard tools. Thanks for the help!
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12-09-2023, 03:08 PM	#2
ctuna Lieutenant General 1920 Rep 13,119 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	You might as well get a used Mulf 2 hi or Combox you can find them on Ebay. That will give you USB . The TCU is pretty much useless now that there is no 2g telephone. Or you could get a Mr12volt adapter that gives you bluetooth phone bluetooth streaming usb and sd card plus another aux. https://www.e90post.com/forums/forumdisplay.php?f=27 http://www.e90post.com/forums/showthread.php?t=1181654 TCU probably work right away for bluetooth if it's the only problem Mulf I think requires the microphone connection to be re-pinned. Go to the coding subforum for instructions on modifying the module settings.(or stereo sub forum) https://www.e90post.com/forums/forumdisplay.php?f=27 https://www.e90post.com/forums/forumdisplay.php?f=368 If you have idrive the next on to. https://www.e90post.com/forums/forumdisplay.php?f=122
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