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Old 12-12-2012, 09:08 PM   #11
SATX_E46
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Join Date: Jan 2012
Location: San Antonio Texas
Posts: 219
My Ride: 2003 325i
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Sounds like the alternator, many times I have seen this happen, not just on e46s

People replace the battery, but that was already toast but holding enough charge to start you up and run for time while in the end both were bad, alternator and battery is something I've recommended to be changed at the same time. The alternator is probably oem in your car so it wouldn't hurt to change it.
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