Quote:
Originally Posted by crystalworks
Hopefully the IVM fixes it. If not, your symptoms certainly fit a failing voltage regulator on the alternator. Sometimes it will put out 14+v and other times it will drop down. I had your symptoms and a new alternator was the resolution. Fortunately an alternator on the N62 isn't too bad of a job.
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+1 on this.
Given you can verify and solve any parasitic drain issues, and are confident the battery is good, if you unlock the cluster and access the battery voltage menu (#9 on the updated clusters), watch for fluctuations while the car is running.
If the voltage dips and jumps around, away from the ~14.0-14.3V the alternator "should be" constantly putting out, you may suspect the issue is alternator related.
I had similar symptoms with an irrational battery, and solved all with a new voltage regulator.
10-18-2016, 05:30 PM
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