LookyLeasy
EV OwnershipDiscussionCommunity Starter

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

SmoothMechanicish18Community StarterJun 20, 20262023 Rivian R1T Quad-MotorAtlanta
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? I'm in Atlanta. Trying to diagnose before I book a shop.
permalink

4 replies

ShiftMilesCommunity StarterCommunity StarterJun 21, 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. Then you'll know the next fork. This is from a 2023 Rivian R1T in Atlanta. Happy to compare notes if your setup is different. I refuse to clear codes until someone else sees them.
QuietGarageCommunity StarterCommunity StarterJun 22, 2026permalink
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. Stop there until you know. Doing the boring step first on purpose.
RotorFanCommunity StarterCommunity StarterJun 22, 2026permalink
Quick add on that: 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. A shop burned me once by skipping that step. Trying not to diagnose from the couch.
BoxerGarage95Community StarterCommunity StarterJun 23, 2026permalink
Not convinced that's the whole story. Match starting SOC and battery temp if you're comparing 2023 Rivian R1T charge sessions. Then you'll know the next fork. That's the whole play. Make the next action something you can finish this week. If it repeats twice more I'll book time.
Sign in to reply

Similar discussions