hi, getting, Increased Battery Discharge message on 2010 328I convertible, vehicle has 11, 500 miles, does battery need to be replaced? , when the car s turned off i don't see anything that could be draining the battery... thanks

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2011 X5 Premium
2010 328i Hard top convertible
2007 Z4
2007 X5
2003 325
2003 X5