See also:

Deactivating HDC
Press the button again; the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

Automatic mode
The automatic engine start/stop function is operational after each engine start. The function is activated above a certain speed. ▷ Manual transmission: above 3 mph, approx. 5 km/h. ▷ ...

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 ...