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      02-17-2020, 01:26 PM   #16
dmaxdmax
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Drives: 2016 340i xD 6-spd
Join Date: Jan 2020
Location: New Jersey

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My buddy who owns an auto shop said that bmw advises to replace the battery every three years. Mine, at 80k miles is gone. I'm getting 12V after a nice highway drive on it and the alt is putting out 14.5 as it should.

Sucky batteries. Hope that's all you need!
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'92 325i RIP, '99 328i RIP, '16 340i