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2023 Rivian R1T — eV has plenty of main battery but shows a 12V warning

CityNerd482Community StarterJun 11, 20262023 Rivian R1T Quad-MotorNew York
Traction battery is charged, but a low-voltage warning appeared after the car sat overnight. I know the small battery can still immobilize an EV. What information would you capture before service? If I figure it out I will update the thread.
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WrenchDadCommunity StarterCommunity StarterJun 12, 2026permalink
Ask what changed right before it started. Capture voltage while the 2023 Rivian R1T is actually failing — after it restarts you've lost the clue. Don't erase codes until someone who can help has seen them. This is from a 2023 Rivian R1T in New York. Not gospel, but it saved me a headache. Not driving it hard until I know more.
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