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      05-26-2020, 10:19 PM   #240
GewoW
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Drives: E92 M3 LSB/Black 6MT
Join Date: Mar 2007
Location: Montreal, Canada

iTrader: (4)

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2011 BMW M3  [9.34]
Hey all

got a 61 AH mini battery to save weight
coding it into DME

- coded CAS thru NCSExpert, changed 90 to 60 ah_agm
- re-read ECU and it's well labeled/coded
- registered new battery via ista
- also registered via tool32
- when i check on ista as well as inpa, it says 86 AH (it was previously written 90) even though it's coded in NCSExpert CAS as 60

any ideas?

thanks

**update
Changed VO in CAS and NFRM
Was only able to change to A070 (70ah)
Tried 55 and 60 didnt work
Then i recoded the CAS. Tried 55, 60 and 70
Then registered it after each time
When then checking battery info in inpa and ista, when i code CAS to 55 or 60, it reads 86. When I code to 70, it reads 70.

Seems to me you can't code a lower AGM value.

Anyone have anything to add or suggest that is different so the car sees the proper 60 ah value?

Thanks again
Appreciate 0