Now my logic is, with these B8 cars all have the older BEM system, which means that you can't perform re-coding using Carista, it is just not an available option within Carista for B8 cars - I've checked recently. Now with a bit of time, I'm wondering if I should change the coding from lead acid to AGM - I have idea if the origin coding is for a lead acid or AGM battery, but if I could get access to that car I could read the battery info stored in the car's BMS and work that out. I am currently, re-visiting this topic, reason being is that I bought a new Bosch AGM battery for my 2011 B8 S4 - I know that changing a single digit of the serial number wil work perfectly well, but, I helped out a friend back last January with his A6 TDI that came to him with a lead acid battery and his local garage fitted a Yuasa AGM of the same size without changing any coding, at that time I considered that Audi never intended that model to ever use an AGM so swopping a lead acid for an AGM would just be correcting the previous owner's/selling dealership's error, so what I did was "all good".
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