I have experienced a dead battery twice in the last year. Both times were on a Monday after not driving at all the Sunday prior. Starts right up with a jump and then seems to be just fine. I have owned the car 5 years and have installed a new battery. I have replaced the FSR.

The only other source I can think of is my sub amp, but I connected that per the write up on the How To page. Also wouldn't this be a constant problem if the sub amp were somehow draining the battery?

Anyone experience anything similar?

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2004 BMW X5 3.0i - Mine
2011 BMW 328i xDrive - Hers
2002 BMW 325xi - waiting for a new owner