With HDC engaged, standard descent speed will not exceed 20km/h (12.4mph).
While the green warning lamp is continuously illuminated, HDC target speed can be modified using the cruise control steering wheel switches, as follows: - To increase speed, press and hold switch (2) until the green pointer in the target speed display is at the desired speed.
- To decrease speed, press and hold switch (3) until the green pointer in the target speed display is at the desired speed.
Release the switch to set the target speed.
Note: The white needle indicates the current vehicle speed.
To increase or decrease speed gradually, tap switches (2) and (3) as required. Each tap of the switch will increase/decrease the speed in increments/decrements of 1km/h (0.6mph).
Note: If a new target speed is set and then reverse gear is selected, the target speed will change to the default reverse speed. When a forward gear is next selected, the new target speed is reinstated.
Note: Each gear has a pre-determined minimum speed.
Descent speed will increase only when a slope is steep enough to provide additional momentum. Therefore, use of switch (2) on a gentle slope may not increase the speed.
If the brake pedal is depressed, HDC will be overridden and the brakes will operate as normal. When the brake pedal is released, HDC will resume control of the descent.
If HDC is switched off during a descent, HDC will fade out gradually. This is to prevent loss of control if HDC is switched off in error.
HDC will resume control when switched back on, at the standard default speed.
Do not attempt a steep descent if HDC is inoperative or warning messages are displayed.