Quote:
Originally Posted by jeffrey yap
It has nothing to do with the battery. Had the same problem last year and the dealer had the alternator changed. Discussed the situation with a friend who works for BMW in Munich and confirmed that some of the alternators on the X5 could be faulty and failed to charge the battery fully.
If you drive your car regularly your battery should not have the problem as the battery is designed for the full options on the X5.
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I'm not convinced of this any more I had the battery drains then got a 90aH battery replaced in it.. I had some malfunctions after a long drive 3 months back and nothing since and I only drive about 50k's a day .. 25k runs each...