So I know that the heated seats retain their heat setting until you change it. There's also a sensor in the passenger seat that knows if someone is sitting there and whether or not to turn off the airbag. But it doesnt seem to turn off the heated seats if it senses no passenger. I thought heated seats draw quite a bit of power so I have to turn off the passenger heated seat manually if no one is sitting there. Does anyone know if it turns off automatically after a short while? or maybe heated seats dont draw enough power to affect my mileage??