JohnTomaszewski said:-13 in Chicagoland today. Managed to squeeze out about 45 miles in my 2013 from 100% at normal driving speeds (35-45mph) with climate control set at a nice, toasty 70 degrees. Just about hit VLBW. The car will be outside tonight at potentially -15 for 12 hours @ 90-92% SOC. I'd like to see how the battery warmer zaps the pack during that time...
It may not come on, since you drove the car today, unless it's breezy. The pack seems to take a very long time to drop to the warmer's preset activation temp.