NHTSA Complaint #10701005 — 2008 BMW 528XI

THIS OTHERWISE FINE AUTOMOBILE SEEMS TO GO THROUGH BATTERIES QUICKLY. I PURCHASED THE VEHICLE NEW IN MAY 2007. SINCE THEN BATTERIES HAVE NEEDED TO BE CHANGED AS FOLLOWS: 2009 2011 2013 AND NOW IN 2015 THE NEW BMW BATTERY INSTALLED IN 2013 IS BADLY DISCHARGED. IN 2011 THE DEALER RAN THIS CAR THROUGH AN EXHAUSTIVE ELECTRICAL ANALYSIS AND FOUND NO PROBLEMS. THEN WHY ARE BATTERIES DYING SO QUICKLY? COUNTING THE ORIGINAL BATTERY I'VE BEEN THROUGH 4 ALREADY AND THE 5TH ONE SEEMS ABOUT TO DIE. BMW TOOK CARE OF THE 1ST TWO REPLACEMENTS UNDER WARRANTY, BUT THE 3RD AND PENDING 4TH REPLACEMENTS ARE ON MY TAB. SOMETHING APPEARS TO BE FAULTY WITH THE ELECTRICAL CHARGING SYSTEM AND POSSIBLY THE VEHICLE'S SLEEP MODE. BMW SHOULD FIND THE DEFECT AND REPAIR IT AT NO OR NOMINAL CHARGE TO CUSTOMERS LIKE ME WHO BUY CAR BATTERIES MORE OFTEN THAN FLASHLIGHT BATTERIES. THANK YOU. *TR