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BMW 5-Series (G30) Forum Wheels | Tires | Suspension | Brakes | Chassis Auxiliary battery question

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      11-14-2019, 06:24 PM   #1
xc3
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Auxiliary battery question

Hi,

First time posting, sorry in advance if wrong forum.

I have M550i 2018 with 2VF option, Adaptive M Suspension. I want to retrofit / change / upgrade it to 2VW, Adaptive M Suspension Professional.
Got a donor, everything is fine etc., but right now I am confused.

G30 technical papers told me that in M550i xDrive one should use 24 V steering rack.

-----
Ok, fine. After that I find that part:


Awesome. I need third battery. Continue reading, find this picture:

And here the problems begin. There is no auxiliary battery in BMW Catalogues, that is mounted in the luggage. The only thing I found is extra battery (10 Ah), but it has to be mounted in front of vehicle, not behind. Here is a picture from catalogue -


As far as I understand, I need a part number 12. But there is literally zero information available about it.

Maybe someone had an experience and could help me with this? Thank you in advance.
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      11-14-2019, 07:22 PM   #2
xc3
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UPD, seems I found it. 61219394648

Lol. After couple of minutes since thread creation. Sorry guys.

/DEL
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      11-14-2019, 09:11 PM   #3
LogicalApex
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Thanks for posting the part number once you found it. I am sure someone else will he helped a lot by this.
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      02-09-2024, 04:45 AM   #4
_Martin_
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Hello, have you completed the retrofit? I am doing this on my 2019 G31 530d RWD.

I already had VDC, active steering and auxiliary heating (= second battery). I "only" installed both EMARS and acceleration sensors and corresponding wiring.

Both EMARS are communicating fine over FlexRay, everything seems to be working. The last thing I can not figure out is the coding. VDP ecu is still complaining about coding. Could you share your FA please? I added 2VW, deleted 2VH and 223. And still not OK...
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