2024 Rivian R1S Dual-Motor — low-voltage battery warning after software update

I'd treat 12V warnings as a no-ignore. On the 2024 Rivian R1S, 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 “motor — low-voltage battery warning after software,” that was the fork that mattered for me. I'd want that in writing, not as a promise. Next check is the cheap one I can do in a driveway.

I'd treat 12V warnings as a no-ignore. On the 2024 Rivian R1S, I'd get the 12V/DC-DC side checked even if the traction pack looks fine. Then you'll know the next fork. On “motor — low-voltage battery warning after software,” that was the fork that mattered for me. Stop there until you know. If your situation is the opposite, ignore me. I refuse to clear codes until someone else sees them.

Low-voltage gremlins will strand you even with a full pack. Try a second charger before blaming the 2024 Rivian R1S — site sharing and pack temp change the curve a lot. I'd do that before spending real money. This is from a 2024 Rivian R1S in California. Verbal 'we'll take care of it' is not a plan. Might be overthinking it, but I'd rather overthink than overspend.

Charge curves lie if you don't match starting SOC and temp. Match starting SOC and battery temp if you're comparing 2024 Rivian R1S charge sessions. I'd do that before spending real money. Stop there until you know. Doing the boring step first on purpose.

I'd treat 12V warnings as a no-ignore. On the 2024 Rivian R1S, I'd get the 12V/DC-DC side checked even if the traction pack looks fine. That's where I'd start. On “motor — low-voltage battery warning after software,” that was the fork that mattered for me. Stop there until you know. If your situation is the opposite, ignore me. Next check is the cheap one I can do in a driveway.

Tried a second charger / second scan and the story on the 2024 Rivian R1S didn't change. If that fails I'll eat the diagnostic fee.

Don't clear the alert just to make the screen pretty. Leave the alerts on the 2024 Rivian R1S so service can see what you saw. Then you'll know the next fork. Parts cannon is a personality type I try to avoid. I'll poke at it this weekend.

Charge curves lie if you don't match starting SOC and temp. Match starting SOC and battery temp if you're comparing 2024 Rivian R1S charge sessions. Then you'll know the next fork. Stop there until you know. A day of patience here is cheaper than a wrong part. This is the version I'd tell a friend.