See also:

The concept
The tire inflation pressure is measured in the four mounted tires. The system notifies you if there is a significant loss of pressure in one or more tires. ...

Requirements
▷ Subscription to the optional Convenience Plan. ▷ The date setting on the Control Display is current. ▷ The vehicle is located within wireless network coverage. ...

Close the windows and glass sunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...