You need to "register" the battery with the car to let it know you have replaced the battery. This can be done with bavarian technic tool or INPA i believe. Or take it to dealer to register battery.
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Montego Blue E90 335i
7" VRSF IC | OFT Tune | DCI | RB PCV | Secondary CAT Delete & CYBA 3.75" Tips | M3 Front | Mtech Rear | CSL Trunk | 219M | KW V1 | AA CP
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