In order to retrofit heated steering wheel you need to existing Dual zone climate control system in your car, usually, it comes on SEL or Highline models
if you have that then you need heated steering wheel, you will need new angle steering module that your steering is attached to; with additional plug for a heated steering wheel , you will need as well new dual climate control unit that has additional functionality to turn on heated steering wheel and this is tied to front driver seat heating button new wiring and probably coding...
