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      09-16-2020, 10:37 PM   #8
lookalikehuuh
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Drives: 2006 330i, 2007 335i
Join Date: Sep 2014
Location: San Diego, CA

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I presume the regulator you replaced is not OEM? The error can happen when shit quality parts are used that do not fall within the proper spec, or do not report back properly to the ECU what its true status is. For example "Duracrap" parts from Autozone.

Install the new alternator and make sure its a true quality unit OE or OEM unit do not install ones from Autozone/Oreilly or the like. The odds that you will have the issue continue is very likely and could actually cause other sensors in the vehicle not to work. I know this from first hand experience.
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