[F1fan]

I have the exact same issue. Dealer was no help because they couldn't replicate

[bugsy]

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!

[MW]

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.

[Mc 007]

Hello
Need help
I have CIC with combox in my E92,sound vanish when i start drive,after some mins of driving sound come back(from every source same situation),also radio stations vanish,music mins play normally,navi work
This problem start when i move from CCC to CIC

[ctuna]

You should start you own thread.
And also list all the audio options you have.
Did you reprogram the car for the changed Idrive type?

[Mc 007]

Originally Posted by ctuna

You should start you own thread.
And also list all the audio options you have.
Did you reprogram the car for the changed Idrive type?

Have hi-fi(no L7),cd changer,Combox(early mulf(no high)
Never had similar trouble with CCC

https://youtube.com/shorts/ro9sLE4f064?feature=share

[Mc 007]

Trouble was no register battery,old battery was old & ex owner hasen’t register it,today i buy a new one,register it & the music play without problems

For not believe...after 1 year...