Mercedes-Benz GL-Class: Setting a speed - DISTRONIC - Driving systems - Driving and parking - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Setting a speed

WARNING Keep in mind that it may take a brief moment 
Keep in mind that it may take a brief moment until the vehicle has made the necessary adjustments.
Increase or decrease the set vehicle speed to a value that the prevailing road conditions and legal speed limits permit. Otherwise, sudden and unexpected acceleration or deceleration of the vehicle could cause an accident and/or serious injury to you and others.

► Press the cruise control lever to the pressure point, up 1 for a higher speed or down 2 for a lower speed.
► Keep the cruise control lever pressed until the desired speed is reached.
► Release the cruise control lever.

The new speed is stored. DISTRONIC is activated and adjusts the vehicle's speed to the new speed stored.

    Switching on DISTRONIC, storing andmaintaining the current speed
    WARNING   The vehicle can be braked when DISTRONIC is activated. For this reason, deactivate DISTRONIC if the vehicle is to be set in motion by other means (e.g. in a car wash or by tow ...

    Making adjustments in 1 mph (Canada:1 km/h) increments
    ► Briefly press the cruise control lever to 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:

    Passing Another Vehicle While Using Cruise Control
    Use the accelerator pedal to increase the vehicle speed. When you take your foot off the pedal, the vehicle will slow down to the previous set cruise speed. ...

    High-Beam On Light
    This light comes on when the high-beam headlamps are in use. See Headlamp High/Low-Beam Changer   for more information. ...

    Parts and accessories
    WARNING The fitting of non-approved parts and accessories, or the carrying out of non-approved alterations or conversions, may be dangerous and could affect the safety of the vehicle and occ ...