Quote:
Originally Posted by ard
...And you have a 2007 with a battery that is probably at least 4 years old...how long do YOU think that battery will last? 5 years? It WILL need to be replaced soon, so by dropping a new battery in you eliminate one POTENTIAL issue, and won't spend an extra hour for the dealer to tell you "your battery was also failing as well as a short, and we spent an hour diagnosing the battery and another hour to replace it, so $600 for a new BMW battery".A
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The battery might not be the problem, but at that age it makes sense to simply replace it to eliminate it as a cause. There are some tests you can do with a voltmeter to test the battery condition, but if you're not a DIYer, then at that age replacing it is a good idea, if only as a preventative measure.