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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Audio cuts out for a few seconds continuously after frequent use of 330i



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      11-28-2012, 09:59 AM   #23
F1fan
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I have the exact same issue. Dealer was no help because they couldn't replicate
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      11-28-2012, 10:20 AM   #24
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In my case I've had TCU (Bluetooth, voice commands unit) replaced and this sorted out the issue. From the general reading, due to the network architecture in the car, it's enough that one of the units generates "problem"/error or just breaks network connection and other units will experience problems. As result, there might be problems with sound, CCC might be resetting, etc.

Have checked your wiring, i.e. around TCU unit in the trunk or maybe have it disconnected and see if it helps. Just remember that's the "go through connection" therefore in place of the unit you'll need to connect cables. If I'm not mistaken connections are fiber optic based.

Good luck!
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      10-23-2016, 11:54 AM   #25
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I simply unplugged the MULF unit in the trunk (under carpet on the right)
For my 2006 330i this solved the audio issues completely. I believe the MULF unit is needed for bluetooth which I do not use.
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