See also:

Switching on/off manually
Press the button. ...

Tire identification marks
Tire size 255/50 R 19 103 Y 255: nominal width in mm 50: aspect ratio in % R: radial tire code 19: rim diameter in inches 103: load rating, not for ZR tires Y: speed rating, before the R on ZR ...

Possible commands
Having possible commands read aloud   Briefly press the button on the steering wheel. ›Help‹. Possible commands are announced. The digits from zero to nine are recognized. The digits can ...