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      08-04-2014, 12:52 PM   #4
Tom Wiedeman
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Drives: 2008 BMW X3 3.0si
Join Date: Dec 2012
Location: Salem, OR

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Hey guys the starter circuit is computer controlled. The delay is the time it takes for system checks and sets. It does not take very much voltage drop for the system to just not work, requiring a jump. From my experience not much below 11.5 will do it. you can have the battery load tested to be sure. Some (most) models require reprogramming when new batt is installed. You are best off with factory (OEM) BATT, regardless of what other manufactures say.
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