measure your battery voltage with a digital volt mater, DMM.
report battery voltage when running and when not running.
report here.
12.65v , resting for 4 hours, = good. (key off reading)
14.7 v while running shows alternator is working. all that ROOM TEMP.
your computer is not that smart. ( Maybe on a Lexus)
most computers (ECU) just get stupid at below 10vdc.
the power supply just shuts down , harmless.
there you go. good luck
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