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      01-12-2013, 11:43 PM   #2
First Lieutenant
cdmulders's Avatar

Drives: 2013 535xi
Join Date: Dec 2009
Location: Montignies-Lez-Lens, Belgium

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I lived this exact scenario with my E39. It turned out to be an electrical drain on the battery caused by a malfunctioning electric fan. While this may not be the exact cause of your problem, I would suspect a short or unexpected drain on your battery. Troubleshooting may find the problem - check the draw on your battery and start eliminating circuits one by one until the circuit that is draining your battery is identified.

Good luck!
2013 535xi, Carbon Black, beige interior, M Sport package, HUD, DDC & ARS
2010 Z4 35i, Crimson Red, beige interior, 6sp manual, Adapative Suspension
2000 528i, Cosmo Black, beige interior, Sport package (retired)