ArnoldF1scher
Problems with sat nav and sound system in the BMW 3 Series 2001: Possible antenna faults and workshop solutions
(Translated from German)
Summary of the thread
The conversation revolves around issues with the satellite navigation and sound system in a 2001 BMW 3 Series, suspected to be due to antenna faults. The problems include poor radio reception and malfunctioning of the navigation and sound systems. Possible causes suggested include a faulty telecommunications control unit or issues with the aerial or wiring. The recommended solution is to have a precise diagnosis made at a garage to identify the exact problem and then proceed with the necessary repairs.
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21 comment(s)
ArnoldF1scher (community.author)
Thanks for your quick reply! The radio reception is really poor, it keeps cutting out. Otherwise everything works quite well, so at least the car still runs smoothly despite the 238592 km I have on it! I had my last service about two months ago and everything was still OK with the sound system and sat nav. Your assumption about the telecommunications control unit sounds pretty logical. I'll have to ask the garage. Thanks again!
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GisiSchwarz
Hey, no problem, always happy to help! I'm glad that I can help with my experience. Your problem with the radio reception actually indicates that something could be wrong with the aerial. But it could also be due to the wiring. So, if I were you, I would definitely go to the garage and have a precise diagnosis made. It's always good to know such things. Now to the telecommunications control unit. It was simply defective in my 5 Series. And if the part no longer works properly, it can affect the navigation system and the sound system. That's how the workshop technician explained it to me. The repair costs weren't exactly cheap, but since then everything has been working perfectly again. So if you think this could be the problem, it would probably be a good idea to have it checked. I hope I've been able to help you and wish you every success!
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ArnoldF1scher (community.author)
Hey, thanks again for the detailed answer. I guess you're right that an accurate diagnosis makes sense. Even if I'm not particularly looking forward to a possible bill... But well, safety first. And if it really is the telecommunications control unit, then it will just have to be repaired. Your statement gives me a good indication of what I can address in the workshop. Well then, thanks again and have a nice day!
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Hussar
Got that error, what strange that it doesn’t show on insta+ or inpa only on Carly. Also it is not critical error so I don’t think it should be mark as red.
Racer2024
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Hey, thanks again for the detailed answer. I guess you're right that an accurate diagnosis makes sense. Even if I'm not particularly looking forward to a possible bill... But well, safety first. And if it really is the telecommunications control unit, then it will just have to be repaired. Your statement gives me a good indication of what I can address in the workshop. Well then, thanks again and have a nice day!
Did anything come out of your workshop visit? I would be delighted if you could share your experiences with us.
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CarlyAdminBenny
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Got that error, what strange that it doesn’t show on insta+ or inpa only on Carly. Also it is not critical error so I don’t think it should be mark as red.
Hello, Thanks for your feedback. Which error code did you save exactly?
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Hussar
CarlyAdminBenny
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It’s B7F805.
Is your radio reception working normally?
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R3d-Shadow
Connection head unit to DAB L-band antenna: Line interruption. How important is this and how do I fix the problem?
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GisiSchwarz
Hello, I had a similar problem with my BMW 5 Series, built in 1999, which is the big brother of your car. I am not an expert on cars, but I have had some experience with repairs and so on. In my case, the telecommunications control unit was the problem. The repair in the workshop cost about 765 euros. Maybe that will help you. Can you confirm that all the other functions are working properly? What about the radio reception? Perhaps I can then help in more detail.
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