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Battery/Alternator weird issues? Battery/Alternator weird issues?
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  #41  
Old 10-28-2016, 04:29 PM
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Quote:
Originally Posted by Chucklez View Post
Sorry for the double post but I was able to check the voltage. I'm getting 12v almost exactly when the car isn't on from the battery and it's not moving at all soo that seems like it's good. While on the alternator fluctuates from 14v to 14.5v max so it's not over or undercharging anything or the voltage isn't off. Soooo I have no idea on why all these lights are on the alternator seems to be working just fine. Anyone have any ideas now?
Did you have those lights on when the system was reading 14-14.5? You need to know the voltage the second those lights turn on. That's why it's best to drive with the cluster unlocked on the voltage test to see the current voltage at the time of issue.
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  #42  
Old 10-28-2016, 05:06 PM
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Originally Posted by crystalworks View Post
Did you have those lights on when the system was reading 14-14.5? You need to know the voltage the second those lights turn on. That's why it's best to drive with the cluster unlocked on the voltage test to see the current voltage at the time of issue.
Yes the lights were on when I was taking that reading. They are constantly on now from startup till I shut the car off.
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Old 10-28-2016, 11:51 PM
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Time to get it scan and find out what is tripping the lights on.
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Old 10-29-2016, 01:02 AM
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Time to get it scan and find out what is tripping the lights on.
Even with the check engine light not on I can get it scanned? Didnt know that. (I figured check engine light had to be on for like codes to be read I dunno why) Alright guess thats my only next step! Thanks guys here hoping this isnt a can of worms...
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Old 10-29-2016, 09:17 AM
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Originally Posted by Chucklez View Post
Even with the check engine light not on I can get it scanned? Didnt know that. (I figured check engine light had to be on for like codes to be read I dunno why) Alright guess thats my only next step! Thanks guys here hoping this isnt a can of worms...
Yep, not a cheap OBD2 reader though. UAN is referring to an actual code reading. Something that will pull the BMW specific codes.

Would be a crazy coincidence to have a something like the transfer case actuator gear or a wheel speed sensor go out 1 day after replacing a failed alternator. But it could happen.
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