Thread: E53 3.0i whine
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Old 11-11-2019, 06:27 PM
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Loperamide Loperamide is offline
Join Date: Jul 2017
Location: UK
Posts: 158
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It is your BM54 amp in the rear of the vehicle under the spare tyre. I had the same problem. Went away when I removed the amp and installed an EONON head unit.
2003 X5 4.4i
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