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:

    4ETS (Electronic Traction System)
    Observe the "Important safety notes" section. Traction control is part of ESP®. Traction control brakes the drive wheels individually if they spin. This enables you to pull away and ...

    Cargo light
    The cargo light switch has three positions: ON 1 , center 2 and OFF 3 . ON position When the switch is in the ON position 1 , the cargo light will illuminate. Center position When the sw ...

    Rear towing point
    The rear towing point is located behind a removal panel in the lower rear bumper. The rear towing point may be used to tow another vehicle if required. 1. Rotate each of the fasteners 90 degrees ...