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      07-19-2018, 11:34 PM   #4
masterh
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Drives: bmw 328i
Join Date: Oct 2017
Location: Los Angeles CA

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I doubt the Alternator is going bad. The battery was completely dead. I coudn't even unlock the door with a key fob. I drove around little bit, turned it off and it started normal which means Alternator charged the battery?

thanks for pointing out AGM battery. Maybe the car with AGM from the factory and it hasn't been coded yet.


Quote:
Originally Posted by ctuna View Post
This is not the sub forum for battery questions which have
been quite hashed out .
1) If you don't drive the car enough the battery won't get charged.
2)If you switched battery types from lead acid to AGM or vice versa
it can cause problems if you don't reprogram the car for battery type
and size.
3) Did you match the amp hour size.
4)You could have a parasitic drain.
5) The alternator could be going bad.

http://www.bimmerfest.com/forums/sho...15&postcount=6
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