We purchased our 2011 Volt in 2014 off lease. We've run it almost exclusively on battery and have been very happy with it. The front right has damage due to a conversation with a guard rail, but the vehicle is/was rock solid. A couple of weeks ago a message popped up on the display, indicating that the battery was too cold and we should plug it in (the outside temperature was 40+F). A few days later it appeared again and this time it threw a check engine light. The two codes were P1E00 and P0C36. The dealer ran diagnosis and found that the sensor embedded in battery bank 2 had failed. They informed us that 2011-style batteries were no longer available, and that replacing all three batteries would be $10,000 plus labor. We're sad that we won't be interacting with the service managers at the dealership, and that our car, with only 76,000 miles on it, is no longer viable - we've loved driving the Volt.
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