Press the driver's side or passenger side seat button at the bottom of the centre display in order to open the control for seat heating.
Tap on the button for the heated seats repeatedly in order to switch the heating on/off and toggle between the three heating levels.
The level changes and the button shows the set level.
Warning
Heated seats must not be used by people who find it difficult to perceive an increase in temperature due to a lack of sensation or who otherwise have problems operating the controls for the heated seats.