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      12-27-2020, 03:08 PM   #8
sebseb
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Drives: 2023 X5 45e
Join Date: May 2020
Location: PNW

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Quote:
Originally Posted by biterror View Post
What if the car logs the battery charge status and reports it back to BMW? (I wouldn't be surprised if it did this, even my old F11 records the battery charge levels and they can check those at the dealer.) Then BMW can see that you have been using the full battery capacity and in case of any battery problems, make you pay for the service..
Even if the car doesn't report back to BMW, I'm pretty sure the battery management electronics (SME) takes log of all the data reported by each Cell Supervision circuit (there are 12 of them - one per cell). This data is stored on the SME so I don't think flashing anything would erase it. The SME probably records the energy going in and out of each cell as well.

So when you have an issue with your PHEV and you bring it in, the engineers will probably request the tech to pull the log and they will see that the battery pack was outputting more than it should. I don't think the extra 10-20 miles you get are worth the warranty issues you might have.
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