Owners Flag Possible Gen 2 Rivian Charging Bug in Sub Freezing Temps

A few RivianTrackr readers and viewers have reached out over the past few days to share reports of a potential software issue affecting Gen 2 Rivian vehicles in colder parts of the U.S. At this time, there is no official confirmation from Rivian, and the information below is based on owner accounts.
According to these owners, when temperatures drop below a certain threshold, the vehicle may display a 12V battery warning that prevents AC charging. In the cases shared with us, DC fast charging continued to work normally. One reader in Minnesota noted that the issue appeared after temperatures dropped well below freezing, including a night that reached -14F.
Owners reporting the issue say it may be affecting multiple vehicles at once. One reader shared that while visiting the Minneapolis Service Center, several additional Gen 2 vehicles were present for the same concern, with staff indicating that appointments are filling up. Some owners were reportedly told the hardware appears to be fine and that the issue could be software related, though this has not been officially confirmed.
At this point, there is no certainty around the cause, scope, or whether this is a widespread issue. We have reached out to Rivian to see if they can confirm whether this behavior is a known issue and if a fix is in development. In the meantime, affected owners said they were advised to rely on Level 3 charging.
We will update this post if and when Rivian provides more clarity or official guidance.
Shoutout to Don for making us aware of this.
