Earlier this week with ambient temperature 10 to 12 degrees I was getting a range of around 32 miles, Today with ambient 12 to 15 degrees I got 39.5 miles. All vehicle settings were identical and driving style not intentionally different. I noticed a similar step in range at these temperatures last year. It would appear that a heavy power consumer is switched off at around 13degrees. I suspect it might be related to battery temperature management. Anyone have any thoughts or knowledge?