My battery has been discharging after the car sat over the weekend so I unlocked the tests and checked. It said it was at 12.8 idyling and the battery light came on. My Fluke says its at 13.9.

I turned it off & back on (cranks fine) battery light still on and says its at 12.4, Fluke 13.7-9.

I am charging the battery which is at 12.9 on the Fluke with the car off.

How do I reset the battery light?

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BMWCCA # 480346

'72 e6Tii rip
'90 e30iC sold