A 'Frost Plug Heater' is just a low cost almost guarantee that my Cherokee will be on the road no matter the temperature. I've looked at quite a few Renegade window stickers and have not seen a 'frost plug heater' listed. To me this means a 'frost plug heater' is not installed in this particular vehicle. Or does this mean a 'frost plug heater' is not a Renegade option? Do any of you current owners have a dealer installed 'frost plug heater' in your Renegade?