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STARTING AND DRIVING
* Option/accessory.
434
Hill descent control*
Hill descent control, Hill Descent Control
(HDC), is a low speed function with enhanced
engine braking. The function makes it possible
to increase or reduce vehicle speed on steep
downhill gradients using only the accelerator
pedal, without using the foot brake.
In a car with drive mode control*, the function is
included in the Off Road drive mode.
Hill descent control is adapted for off-road driv-
ing at low speeds and facilitates driving on steep
downhill gradients with difficult surfaces. The
driver does not need to use the brake pedal, but
can instead focus on steering.
WARNING
HDC does not work in all situations but is
designed merely as a supplementary aid.
The driver always bears ultimate responsibility
for ensuring that the vehicle is driven safely.
Function
Hill descent control allows the car to roll at
inching speed both forward and backward, assis-
ted by the brake system. The speed can be
increased by using the accelerator pedal. When
the accelerator pedal is then released the car
slows back down to crawling speed, regardless of
the gradient of the hill and without the need for
the foot brake to be used. The brake lights are
switched on when the function is operating.
The driver can brake and reduce crawling speed,
or stop the car at any time by using the foot
brake.
The function is activated together with Low
Speed Control (LSC) which facilitates driving and
improves traction for driving off-road and on slip-
pery surfaces. The systems are designed for use
at low speed, up to approx. 40 km/h (25 mph).
Activating hill descent control, HDC
Hill descent control only works at low speeds.
The function is activated in different ways
depending on the car's equipment.
With drive mode control*
•
Select the Off Road drive mode in order to
activate the function.
•
Select a different drive mode in order to
deactivate. If the drive mode is changed while
driving on a steep downhill gradient, the
braking effect will gradually decrease.
In the centre display's function view
A car without drive mode con-
trol has a function button for
low speed control with
Hill
Descent Control in the centre
display's function view.
–
Press the button in order to activate the
function.
> An indicator in the button illuminates
when the function is activated.
Points to remember when driving with HDC
With automatic gearbox
•
HDC can be used in gear position D, R, and
with 1st or 2nd gear with manual gear
changing.
•
It is not possible to change to 3rd gear or
higher with manual gear changing.
With manual gearbox
•
HDC only brakes in 1st gear or with reverse
gear (R). There is no active braking in higher
gears despite the function not being deacti-
vated until approx. 40 km/h (25 mph).
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