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2010 2011 BMW 5 Series Forum F10 No Sound from Audio/PDC/Bongs etc - Intermittent loss |
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02-18-2022, 05:30 AM | #1 |
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No Sound from Audio/PDC/Bongs etc - Intermittent loss
All,
Apologies if this has been asked before, but I am losing all sound intermittently (Audio/PDC/Bongs etc) got the "No warning Tones" warning on the I-drive. The really odd thing is I lost it for several weeks (and booked the car in to have it looked at next week) but it is now come back everything working again perfectly!, so a potential intermittent failure. The only thing I did was drove 3 Journeys (70 miles plus) over 3 days when I went to the car on the 4th day everything worked fine. I have read lots of threads and most seem to conclude the H/K Amp is faulty, but how would it all suddenly work again? I guess wiring or water ingress is possible, but I was thinking could it be battery? the car previously had been standing for a week or so at a time, but I am getting no battery warnings? My car is a 2014 530d LCI with Harmon Kardon speakers. Any advice appreciated. |
02-18-2022, 12:52 PM | #2 |
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Same thing has happened to me in one occurence over several days.
In my situation it happened when my car was parked immobile over a week or more during heavy rains. I noticed there was water coming in. Once i cleaned it up and drove with windows down to remove moisture, problem went away on its own. Its been over 6 months without any further symptoms. Just make sure no water infiltration in cabin, or near amplifier. Good luck! |
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02-19-2022, 02:24 AM | #3 | ||
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Thanks. |
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02-19-2022, 08:07 AM | #4 | |||
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Im sure there is a solution that as it seems typical to our models. The air trap for the rear trunk is located just in front of it, with amp laying flat. Less than ideal! Good luck :-) |
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02-20-2022, 04:47 AM | #5 | |
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02-20-2022, 07:12 AM | #6 | ||
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03-13-2022, 06:01 PM | #7 | ||||||
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03-13-2022, 07:40 PM | #8 |
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Ok yeah i suppose it can be a voltage thing as well. But the amp condensation issue has been well documented.
When was the last time you had your battery replaced/registered? Ive replaced mine post amp symptoms…. |
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03-13-2022, 07:41 PM | #9 |
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Looking at your photo i see condensation around the amp. Not sure if photo blurred. But the nuts and bolts look heavily corroded which can indicate humidity to say the least!
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03-15-2022, 02:04 PM | #10 | |
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04-10-2022, 05:11 AM | #11 |
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Battery is original I believe.
Car is booked in at BMW dealer, they disgnosed that the head unit was faulty so its being replaced next week under warranty, hopefully that will resolve it! I guess as pairing phones etc is not happening it could be the head unit, rather than the amp. Fingers crossed! |
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