Press the driver's side steering wheel and seat button in the climate row of the centre display in order to open the controls for seat and steering wheel.
If the car is not equipped with heated seats or ventilated seats, the button for heated steering wheel is immediately available in the climate row.
Repeatedly press the button for heated steering wheel in order to change between the four levels: Off, High, Medium and Low.
The level changes and the button shows the set level.