BMW 3 Series humming sound coming out of speakers when car is off

2011 BMW 3 Series Problem

Ref#20487
CarBMW 3 Series 328 coupe
Year2011
Ownerjhlafren
Posted08/07/2017
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fter I closed it.also when car is running.
very annoying. audio person thought I might try to replace radio and amplifier in trunk (boot). But I this seems to be some weird electronic signal it is getting. When I was charging the car it was really loud if I opened the car door, and for 30 seconds after.
this has been going on for several years. I stopped driving the car it was so annoying. also makes louder sound if I use turn signal indicator. Any ideas?. RF problem? grounding? Help!
Problem Category
Electrics, ECU, Warnings & Lights

Leaks & Noises, Interior and Bodywork


Solution 1
1/4drive | Auto Insider | Since: Jun 2011 | Posts: 25 | Fixes: 1539 | View Garage
Suggested Solution

Has to be getting this "signal" from somewhere.
And as it's getting it when the car is "off" I'm leaning to a power system that's independent from the key.
Your going to need an auto spark to chase this down.


Posted on Saturday 8th of July 2017
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