I spent a year reading about the 12 volt battery drain issues as I have the low battery charge state issue every time the weather turns cold. I finally went to Walmart and bought their 12 volt Everstart AGM battery did a battery replacement in the parking lot and have never had a problem since...
My daily drives in N.W. Washinton are hilly and short (5 miles). In the summer the hybrid assist would come on as I leave the driveway. Now at 38degrees it's ~2 miles into the drive. I suspect hybrid assistance is not activated until the battery hits 40deg. or so. (My Mpg dropped ~8mpg (38 to...