01-25-2020, 03:24 PM | #1 |
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What are each of the two batteries for?
I have two batteries in my 2014 3.5, one a typically large BMW battery and the other about half the size what are each of these used for?
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01-27-2020, 03:10 PM | #3 |
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What options do you have? The auxiliary battery is usually included when you have options/features that require more electrical power...like electronic steering.
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01-27-2020, 03:15 PM | #4 |
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01-27-2020, 04:03 PM | #5 |
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just a minor correction, all F15s have electric steering; what you're referring to is Active (=variable) steering.
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01-27-2020, 05:59 PM | #7 |
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01-29-2020, 01:56 PM | #8 |
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There are two types of auxiliary batteries...one is a small AGM battery...and some may be optioned with a small Lithium battery.
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01-29-2020, 03:49 PM | #9 |
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Are they interconnected to each other? So if you do a battery reset does it reset both or just one? Or if you unplug one does the other keep power to ecu so there is no need for a tender?
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01-29-2020, 08:32 PM | #10 | |
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Quote:
I just want to change my smaller battery (50ah), from what I see there is no coding or registration needed for that? My small battery is from late 2014, do it is definitely due....
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01-30-2020, 12:45 PM | #11 |
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Here's a question - do heated rear seats mean I definitely have the second small battery? I got dealer to give me new main battery so I haven't looked back there myself, and of course harder to do so in this vehicle than my older Ms.
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