The engine must not be running when tyre pressure monitoring is activated/deactivated.
The settings are made with the control in the centre console, see MY CAR.
Select key position I or II.
Select the system MY CAR to open the menus for tyre pressure.
Select Tyre pressure system/Pressure monitoring and press OK.
An X is shown in the information display if the system is activated, the option disappears if the system is deactivated.