SOS Malfunction & No Radio/iDrive
 

So, I've been doing a good bit of research into this and it seems as though the most likely culprit is a bad satellite receiver or TCU. I don't believe my X5 has the satellite receiver, so I'm leaning towards the TCU. I do want to clarify something though with the attached picture. I believe I have the TCU marked correctly, but I'm not sure what the other thing is in front of it? Amplifier?

Also, where is the satellite receiver located?

Lastly, the fiber optic wires to the TCU have the red light, but only for a second or two, then it disappears. And the red light does not appear every time I disconnect it.

Thanks!https://uploads.tapatalk-cdn.com/201...a4109da1d9.jpg

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The box you labeled as TCU is a combox. It replaced the TCU and or MULF from late 2011 on. The box in the front is the amp. The sat receiver hardware is built into the head unit from 2010 up. Is there fiber going to the amp? I think that is the base system which should function even if there is an issue with a component on the fiber loop. The logic 7 amp uses fiber and audio is lost if there is a fiber issue.