If the car came with heated seats then it has the elements. if it did not originally come with heated seats then there are no elements. the reason the parts film doesnt show with or without heated seats is because all of the new replacement parts come with heaters built in, this way they dont have to manufacturer 2 different part #s. In the long run its easier/cheaper to just install the grids in all replacement parts. If 1 or both of your seat bottoms needed a replacement for other reasons and you may have at least one or 2 of the seat bottom elements. You will still need the elements for the seat backs.
With best Regards,