Volvo XC90 TWIN ENGINE Owner's Manual page 468

STARTING AND DRIVING
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NOTE
When LSC with HDC is activated by the OFF
ROAD driving mode, the feel of the accelera-
tor pedal and engine response are changed.
NOTE
The driving mode is not designed to be used
on public roads.
NOTE
The function is deactivated when driving at
higher speeds and must be reactivated at a
lower speed, if required.
Related information
•
Activating and deactivating low-speed driving
using a function button (p. 466)
•
Changing drive mode (p. 461)
•
Hill descent control (p. 466)
•
All-wheel drive (p. 455)
466
Activating and deactivating low-
speed driving using a function
button
Any car that is not equipped with a drive mode
control in the tunnel console has a function but-
Hill Descent
ton for low-speed driving with
Control
in the centre display function view.
Select low-speed driving in the centre
display function view
– Hill Descent Control
Press the
activate or deactivate the function.
> An indicator in the button illuminates
when the function is activated.
This function is disabled automatically when the
engine is switched off.
NOTE
The function is deactivated when driving at
higher speeds and must be reactivated at a
lower speed, if required.
Related information
•
Low speed control (p. 465)
•
Changing drive mode (p. 461)
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.
The function is included in drive mode Off Road.
Hill descent control is adapted for off-road driv-
button to
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.