This would be accompanied by a check control warning of excessive battery discharge.” Also, when the IBS sees that battery voltage is too low for normal vehicle operation it can start shutting down vehicle functions to conserve power while keeping the vehicle operational. The registration process takes place in the ECU, which is the main player in this system. Therefore, at battery replacement time, if you don’t tell the ECU it has a new battery it will overcharge the new battery causing it to wear out faster. The IBS reads this and the ECU tells the charging system to increase voltage and amperage output incrementally as the battery matures. A battery deteriorates normally over time and depending upon service demands and driving profile. The ECU uses this information to control how much charging voltage is needed from the alternator to support vehicle electricity needs. The IBS measures the state of battery charge and sends this information to the ECU. In detail…the answer: “The negative battery cable has an electronic control unit on the battery end of it called an intelligent battery sensor (IBS). In detail…the answer: “ The negative battery cable has an electronic control unit on the battery end of it called an Registering a new battery resets the algorithm back to optimal charging voltage for the specified battery.
Simply, the answer is that BMW designed the charging system with an algorithm that varies the rate of charge by the age and type of the battery installed. Why do you need to register a new battery :
N54 INPA DOWNLOAD IOS HOW TO
Good to know: how to register and code a new battery from a BMW car
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