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      10-02-2012, 03:02 AM   #6
Drives: 2008 Alpine White E90 M3
Join Date: Jan 2012
Location: Calgary, AB

Posts: 3
iTrader: (0)

Had this issue also, dealership told me it was due to the fact that the alternator doesn't kick in for 15-20 min so if your daily drive is under that then battery doesn't get a chance to charge. Installed the trickle charger and plug it in once a week to top off. Time will tell I guess!
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