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      03-10-2012, 03:38 AM   #32
x5mad
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Drives: iX 40
Join Date: May 2009
Location: Australia

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I had this problem on my x5 which I took in 3 times before they fixed it.

Admittedly the SA was great as it was BMW that were being difficult and my SA went to bat for me. In the end I got a new AGM battery and they reprogrammed the alternator to come on earlier. By the way he was talking it sounded like our cars do not have AGM batteries as he said the battery was upgraded after he argued with BMW.

The problem with our cars is the high draw, car not going to sleep and alternator only charging when coasting or braking. One thing that helped a lot was to lock the car when in your garage. The car will go to sleep quicker if you lock the car. Many of us leave the car unlocked when in the garage but this increases draw as the car is awake for longer and the multiple computers are continuing to draw power.
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