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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 12-06-2012, 07:40 PM
italy04 italy04 is offline
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Location: Texas
 
Join Date: Dec 2012
Posts: 6
Mein Auto: BMW 750
Battery Drain

My 2006 750li has a serious battery drain .I bought a new battery, dead in five hours. I am also receiving a transmission error message.Do you think the problem is the alternator?
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Old 12-06-2012, 07:53 PM
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wjjklj wjjklj is offline
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Location: Louisville, Kentucky USA
 
Join Date: Dec 2008
Posts: 1,587
Mein Auto: 2009 750i
Transmission Failsafe on my 2004 745i and all kinds of codes a few months after replacing the battery and registering it ended up being the alternator. I replaced the alternator with a 180amp Valeo and the car runs perfect now.
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Old 12-06-2012, 08:15 PM
italy04 italy04 is offline
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Location: Texas
 
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Mein Auto: BMW 750
Battery Drain

Thanks, I didn't program the battery either.
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