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      11-19-2011, 10:47 AM   #14
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Drives: 2008 E92 M3
Join Date: Apr 2010
Location: Austin, Tx

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Quote:
Originally Posted by isugoo View Post
Make sure your remote keys are not in the range of your car over night.
If your keys are near the car overnight, your car is always in standby mode which drains battery.
Here's the thing. Nothing has changed in years where my keys are stored or where my car is parked in my garage. Nothing has been modified on the car or any equipment added. So the problem has to be caused by something going wrong with the car. I am betting the battery is simply beginning to fail and I need a new battery. Although I admit I have never had a battery in a car fail at 3.25 years. Usually it is 4+ or closer to 5 years before the battery fails.