In most cases it will be subscription based and I think the option is there on some high end ICE cars. EV’s and some PHEV’s have it, but it works as above.
Sorry, can’t edit anymore. I’ve just seen, didn’t you have a Sportage HEV too? The new models (my23 i think) all have remote start, too. There’s another thread in this forum (Sportage HEV winter tip) explaining how it works, so this isn’t my imagination.
No Tuscon ICE. The HEV Sportage has remote park – back and forth only off the battery. but Idon’t believe it has remote heat or whatever they call it. You also have to be within aclose proximity to the car.
The DoT as you said says illegal on the highway, uless you are in the near vicinity,. On private property you can do more or less what you want anyway but the grey area is the insurance – Direct Line said they will cover you if a “quality system is fitted but, as always with inurance read the small print get out clauses. Reading various forums this morning there’s no definitive answer.
As you the questions is on prehheat rather than remote start. I know on some diesels you could have a factory option of a remote heater that had a seperate fuel line pipe i.e Eberspacher/Weber heater.