The vehicle is switched on.
The recommended tyre pressure is correctly set for the respective operating condition on each of the four wheels More.
or 
button to select Service. 
or 
button to select Tyre pressure. 
button to confirm. The display shows the current tyre pressure of each wheel or the Tyre pressures will be displayed after a few minutes of driving message.
button. The Use current pressures as new reference values: message is shown in the display.
button. The Tyre pressure monitor restarted message is shown in the display.
After you have driven for a few minutes, the system checks whether the current tyre pressures are within the specified range. The new tyre pressures are then saved as reference values and monitored.
button. The tyre pressure values stored at the last restart will continue to be monitored.
The vehicle must be at a standstill. Use the buttons on the instrument cluster.
button to select the Tyre pressure menu. 
button to confirm. The Tyre.pr.mon.active message is shown in the display.
button to confirm. The Tyre pressure OK? message is shown in the display.
button. The display shows the Distance menu.
After you have driven for a few minutes, the system checks whether the current tyre pressures are within the specified range. The new tyre pressures are then saved as reference values and monitored.
button. The display shows the Tyre pressure menu.
The tyre pressure values stored at the last restart will continue to be monitored.