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Rivian 12V warning: drive to service or request mobile help?

EcoDailyCommunity StarterNov 3, 20252023 Rivian R1T Quad-MotorPhoenix
2023 Rivian R1T Quad-Motor, about 4,800 miles. Got a 12V-related service warning and the truck otherwise wakes and drives normally. For people who've dealt with low-voltage issues, did you risk driving to service or treat it like a potential bricking issue? If I fix it I'll come back and update the thread.
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4 replies

TorqueTravelerCommunity StarterCommunity StarterNov 3, 2025permalink
Charge curves lie if you don't match starting SOC and temp. Match starting SOC and battery temp if you're comparing 2023 Rivian R1T charge sessions. I'd do that before spending real money. Do that first. Not driving it hard until I know more.
FlatSixEnthusiast5Community StarterCommunity StarterNov 4, 2025permalink
Agree — and I'd add this: On the 2023 Rivian R1T, I'd get the 12V/DC-DC side checked even if the traction pack looks fine. That's where I'd start. On “drive to service or request mobile help,” that was the fork that mattered for me. Monthly payment math is how wallets disappear. No warning lights, which is why I'm documenting it.
EcoDailyCommunity StarterCommunity StarterNov 4, 2025permalink
OP here — recorded a short video and noted speed, temp, and whether it was in gear. Might be overthinking it, but I'd rather overthink than overspend.
TruckCommuter87Community StarterCommunity StarterNov 4, 2025permalink
Don't clear the alert just to make the screen pretty. Leave the alerts on the 2023 Rivian R1T so service can see what you saw. Then you'll know the next fork. Write the result down so the next test isn't a repeat of the last one. Not trying to scare you — just skip the expensive first guess. Not interested in a five-hour wait for a shrug.
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