Tap the symbol in the center of the climate bar to open Climate view in the center display.
Select the Rear tab.
Tap Third row.
The climate system is activated/deactivated and the button lights up/goes out.
Note
The climate control for the third row of seats is automatically activated if any of the third-row seat belts are buckled.
It is not possible to manually activate climate control for the third row of seats if the main air conditioning system is deactivated or the climate system for the second row of seats is deactivated.