BMW Z4 Audio System Dead: DAB & Sound Gone Silent

Had a similar issue with my 2018 BMW M4. The antenna module went bad and caused the same symptoms, no DAB, error messages, and complete audio system failure. Just got it fixed last month at a specialist garage. Turned out the antenna amplifier module was defective, and they had to replace the whole unit. The repair was pretty straightforward but required special diagnostic equipment to properly code the new module to the car. Not a super serious issue, but definitely something that needs professional attention since it's tied into the car's communication systems. My advice would be to find a shop that specializes in BMW electronics. A general mechanic might struggle with the coding part. The repair took about 4 hours in total, including diagnosis and testing. Been working perfectly since then. Just make sure wherever you go, they have the right diagnostic tools for BMW systems. These electrical gremlins can be tricky if not handled properly.

Hey, thanks for sharing your experience! Really helpful to know it was the antenna amplifier module, sounds exactly like what I'm dealing with. Can't remember if you mentioned the repair cost? And just curious, has everything stayed working properly since the fix, or have you noticed any other quirks with the system? Always good to know what to watch out for with these fancy electronics.

Hey there! Happy to give you an update. Since my last post, I took my M4 to get it fixed and everything's been running like a charm. The total bill came to 255 € for replacing the antenna module, and honestly, it was worth every penny. The radio reception is crystal clear now, way better than it was even before the problems started. I've been keeping a close eye on the system these past weeks and there haven't been any problems at all. No more error messages, the DAB radio works perfectly, and the overall audio quality is spot on. It's such a relief not having to deal with those annoying glitches anymore. If you're still on the fence about getting yours fixed, I'd say go for it. Those antenna issues can be a real pain, but once they're sorted, you'll be back to enjoying your Z4's awesome sound system. Just make sure you get it done by someone who knows their BMW electronics, makes all the difference in the world. Feel free to ask if you need any more details about the repair. Always happy to help out a fellow BMW owner!

Thanks everyone for the advice! Just wanted to update you on what happened. Finally got my Z4 fixed and wow, what a difference! Found a BMW-certified tech who really knew his stuff. Turned out it was exactly what you mentioned, the antenna module was shot. Repair cost me around 300 € including labor, which wasn't as bad as I'd feared. The whole process was actually pretty smooth. Dropped it off in the morning, and they had it ready by late afternoon. The tech showed me the old module and explained everything, which I really appreciated. Now my sound system's working better than ever, crystal clear radio, no more error messages, and the audio quality is fantastic. Honestly, I'm kicking myself for waiting so long to get it sorted. Should've done this months ago instead of putting up with a dodgy system. Really appreciate all the help and guidance from everyone here. Sometimes you just need that push to get things properly fixed!