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      01-07-2013, 09:13 PM   #14
Second Lieutenant
Drives: 2008 BMW 135i Convertible
Join Date: Aug 2012
Location: West Nyack, NY

Posts: 260
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Originally Posted by Southjersey128 View Post
I talked to a BMW tech the other day concerning the battery coding. He said as long as your not switching to a mat battery you don't need to code it. I checked with the parts guy at another dealership I buy from and he said the same thing. White battery, no coding needed. Black battery, coding needed.
I have read the opposite of this (on the internet, so take it for what it's worth). I've read that the charge profiles for new/old OEM batteries differs. I think you have to reset something in the computer so it knows that a new battery has been installed at the least so that it can modify the charging profile for it. The charging profile helps extend the length of the battery.
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