Thread: 640D what is the extra battery for?
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      09-30-2017, 01:52 AM   #2
nygron
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Drives: 640d
Join Date: Aug 2017
Location: Norway

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I found the answer on this thread http://f10.5post.com/forums/showthread.php?p=16739086

It is a combination of big engine and active steering needing more power. So the EPS needs 24V.
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