Range Rover: Gradient release control (GRC) - Hill descent control (HDC) - Range Rover Owner's ManualRange Rover: Gradient release control (GRC)

With HDC activated, if the vehicle is stopped on a slope using the foot brake, GRC will become active (except in Terrain response Sand program). During a hill ascent when the foot brake is released GRC will automatically delay and graduate the brake release, to allow the vehicle to move smoothly away. When descending a hill, a similar brake hold and gradual release is employed to provide a smooth transition into HDC control.

GRC operates in forward and reverse gears and requires no driver intervention.

    HDC operation
    With HDC engaged, the speed of descent can be altered using the cruise control steering wheel switches, as follows: • To increase speed press and hold the + switch (2) until the desired speed ...

    Ascending steep slopes
    When ascending steep slopes with HDC selected, the vehicle will allow full control to the driver in the normal manner. If HDC is switched off, the maximum vehicle speed will be limited to allow mo ...

    See also:

    Vehicle-to-vehicle distance control mode
    In the vehicle-to-vehicle distance control mode, the Intelligent Cruise Control (ICC) system automatically maintains a selected distance from the vehicle traveling in front of you according to ...

    Brake fluid
    WARNING   The brake fluid constantly absorbs moisture from the air; this lowers its boiling point. If the boiling point of the brake fluid is too low, vapor pockets may form in the brake ...

    Ultrasonic Parking Assist
    If available, the Ultrasonic Rear Parking Assist (URPA) system assists the driver with parking and avoiding objects while in R (Reverse). URPA operates at speeds less than 8 km/h (5 mph). The sen ...