I'll second that. It dropped to 26 degrees Fahrenheit (-3C) overnight and my bike developed the CAN error and the battery display reads 0%. It was at 73% when i parked it the previous night. I'ts gotten up to 40 degrees Fahrenheit but the problem persists. I'm going to start checking fuses and maybe put a heater in the garage to warm it up. The manual says the bike bike should operate down to -22F before it shuts itself down, and the recommended minimum riding temperature is 23F, so temperature shouldn't be the cause, but i'm still hoping it is because what else could it be?
(2016 Zero S with the 13.0 power pack)