See also:

Declaration according to NHTSA/FMVSS 138 Tire Pressure Monitoring Systems
Each tire, including the spare (if provided) should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire i ...

Malfunction
A message is displayed in the instrument cluster. HDC is not available, e.g., due to elevated brake temperatures. ...

Switching on/off
Press the button. ...