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

NorthNomad2Community StarterAug 25, 20262023 Rivian R1T Quad-MotorFlorida
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?
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4 replies

NorthNomad2Community StarterCommunity StarterAug 25, 2026permalink
Checked the easy stuff on the 2023 Rivian R1T and found one clue worth chasing before I book a shop. Might be overthinking it, but I'd rather overthink than overspend.
ColdStartBuilder79Community StarterCommunity StarterAug 25, 2026permalink
Low-voltage gremlins will strand you even with a full pack. Try a second charger before blaming the 2023 Rivian R1T — site sharing and pack temp change the curve a lot. That's where I'd start. This is from a 2023 Rivian R1T in Florida. Not gospel, but it saved me a headache. I've seen both outcomes, which is why I'd test instead of assume. I already checked the easy fluid levels.
ColdStartBuilder79Community StarterCommunity StarterAug 26, 2026permalink
I'd treat 12V warnings as a no-ignore. On the 2023 Rivian R1T, I'd get the 12V/DC-DC side checked even if the traction pack looks fine. I'd do that before spending real money. On “drive to service or request mobile help,” that was the fork that mattered for me. This is from a 2023 Rivian R1T in Florida. Not gospel, but it saved me a headache. If that fails I'll eat the diagnostic fee.
ColdStartBuilder79Community StarterCommunity StarterAug 26, 2026permalink
Low-voltage gremlins will strand you even with a full pack. Try a second charger before blaming the 2023 Rivian R1T — site sharing and pack temp change the curve a lot. I'd do that before spending real money. Just my two cents from doing this recently. Not interested in a five-hour wait for a shrug.
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