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:

    Ignition Transmission Lock Check
    While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. ► The ignition should turn to LOCK/OFF only when the shift lever is in P (Park ...

    Important safety notes
    WARNING   It is dangerous to shift the automatic transmission out of parking position P or neutral position N if the engine speed is higher than idle speed. If your foot is not firmly o ...

    Floor Mats
    WARNING If a floor mat is the wrong size or is not properly installed, it can interfere with the accelerator pedal and/or brake pedal. Interference with the pedals can cause unintended acceleratio ...