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BMW 3-Series (E90 E92) Forum
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Sub is making weird sound
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| 06-12-2018, 05:40 AM | #1 |
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Lieutenant
 
64
Rep 478
Posts |
Sub is making weird sound
I've just noticed from past few days every time I start my car when the sub comes on it makes kind of humming sound..
When I switch the ignition off sub still makes humming sound for few seconds then it goes off. What could it be..? Any advice.. |
| 06-12-2018, 09:52 AM | #2 |
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Captain
92
Rep 660
Posts
Drives: E90 330D M-Sport LCI
Join Date: Aug 2017
Location: Buckinghamshire
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Sounds like a dodgy earth somewhere, have you checked your ground locations?
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Appreciate
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