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BMW 5-Series (G30) Forum 2017+ BMW 5 Series (G30) General Discussions Brake regeneration error

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      04-13-2021, 10:01 PM   #1
DNYC1919
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Brake regeneration error

Have had my 2021 540 for 4 months with about 1,200 miles. I got an error the other day that popped up on the i drive screen that said "break regeneration error, you can still drive car but take it to service center". Something along those lines. I left it at the dealer to get it checked out. Anyone ever had this happen?
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      04-17-2021, 09:57 AM   #2
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If I understand it correctly, the newer BMWs use AGM batteries, which can be charged rapidly by intelligent alternators which disengage during acceleration, and are activated by braking to charge the batteries, thereby enhancing overall performance. The system constantly monitors battery health. Not surprising that there might be a malfunction in such a sophisticated system.
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