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I have mine coded off on my 2021 M340i. However, I want to verify the comment that on these MH cars the start/ stop components are “beefed up”.
There is a combination starter/alternator that both starts the car and uses regenerative power to charge a separate 48 volt starting battery. The standard 12 volt battery in the trunk is not part of the start/stop system.
On a 2021 M340i MH I do not have a button to turn the system off, so I have it coded to start up in Sport Individual mode.
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