Mercedes-Benz GL-Class: Braking - ABS (Anti-lock Braking System) - Driving safety systems - Safety - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Braking

If ABS intervenes when braking, you will feel a pulsing in the brake pedal.

If ABS intervenes: continue to depress the brake pedal with force until the braking situation is over.
To make a full brake application:

depress the brake pedal with full force.

The pulsating brake pedal can be an indication of hazardous road conditions, and functions as a reminder to take extra care while driving.

WARNING Do not pump the brake pedal. Use firm, steady 
Do not pump the brake pedal. Use firm, steady brake pedal pressure instead. Pumping the brake pedal defeats the purpose of the ABS and significantly reduces braking effectiveness.

    Important safety notes
    Observe the "Important safety notes" section. ABS regulates brake pressure in such a way that the wheels do not lock when you brake. This allows you to continue steering the vehicl ...

    Off-road ABS
    An ABS mode specifically suited to off-road terrain is activated automatically if the offroad drive program is activated or the LOW RANGE off-road gear is selected. At speeds below 18 mph(30 km ...

    See also:

    Trip computer
    Switches for the trip computer are located on the right side of the combination meter panel. To operate the trip computer, push the switches as shown above. When the ignition switch is push ...

    Headlight switch
    Lighting 1 Turn the switch to the position: The front parking, side marker, tail, license plate and instrument lights will come on. 2 Turn the switch to the position: Headlights wil ...

    Hood
    To open the hood: 1. Pull the handle with this symbol on it. It is located inside the vehicle to the lower left of the steering wheel. 2. Then go to the front of the vehicle and locate the seco ...