12V battery change

[Taycanistra]

So my OBC killed also my 12V battery.OBC I fixed sucessfully.12V baterry i found on ebay almoust new.Car is driving but still I have isue with 12V battery,the car still shows yellow electicity issue.Do I need some coding or what?

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[Taycanistra]

So noone knows how to successfully change 12V baterry on Taycan?I both used Battery,i think from Lambo.It must be changed firmware or bms or what?How to do that?Can it be done with programing in PIWIS maybe?Anyone please?The car drives and battery is beeing charged.But I have yellow sign on the dash,and PIWIS says bad BMS.