I live in New York & its pretty cold so my assumption is that the issue may be that the battery is frozen but I read in the manual that it only freezes at temperatures of -15 or less. So is there anything I can do to warm my car up & figure out if the battery did freeze? What could be another reason for it to not turn on or even respond? It is fully charged because I literally just took it off the charger. Does anyone have any idea on what the problem might be??