Open climate view in the centre display by pressing the symbol in the middle of the climate row.
Select the Rear tab.
Press Third row.
Climate control is activated/deactivated and the button illuminates/extinguishes.
Note
The climate control for the third seat row is activated automatically if anyone in the third seat row fastens a seatbelt.
It is not possible to manually activate the third seat row's air conditioning if the main air conditioning is deactivated or the second seat row's climate control is deactivated.