Making adjustments in 5 mph (Canada: 10 km/h) increments

lever Briefly press the cruise control lever beyond the pressure point, up 1 for a higher speed or down 2 for a lower speed.
The last speed stored is increased or reduced.

    See also:

    Vehicle data, GL 550
    The data stated here refers specifically to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...

    Recovering a vehicle that has become stuck
    Pull away smoothly, slowly, and in a straight line when pulling out a vehicle that has become stuck. Excessive tractive power could damage the vehicles. If the drive wheels have become stuck in ...

    Introduction
    The Sett. menu can be used for:  - changing the instrument cluster settings  - changing the light settings  - changing the vehicle settings  - changing the convenien ...