Get Starting and driving -> Hill descent control Guide for Volvo XC40 SUV 2020

STARTING AND DRIVING

regardless of the gradient of the hill and with-

out the need for the foot brake to be used. The

brake lights are switched on when the func-

tion is operating.

Related information

Hill descent control*

Hill descent control (HDC¹⁶) is a low speed

function with enhanced engine braking. The

function makes it possible to increase or

reduce the car's speed on steep downhill gra-

dients using only the accelerator pedal, with-

out using the foot brake.

Low speed control* (p. 427)

•

Changing drive mode* (p. 419)

•

The driver can brake and reduce crawling

speed, or stop the car at any time by using the

foot brake.

In a car with drive mode button*, the function

is included in the Off Road drive mode.

Hill descent control is adapted for off-road

driving at low speeds and facilitates driving on

steep downhill gradients with difficult surfa-

ces. The driver does not need to use the brake

pedal, but can instead focus on steering.

The function is activated together with low

speed control (LSC¹⁷) which facilitates driving

and improves traction for driving off-road and

on slippery surfaces. The systems are

designed for use at low speed, up to approx.

40 km/h (25 mph).

WARNING

HDC does not work in all situations but is

designed merely as a supplementary aid.

The driver always bears ultimate responsi-

bility for ensuring that the vehicle is driven

safely.

Function

Hill descent control allows the car to roll at

inching speed both forward and backward,

assisted 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,

Hill Descent Control

Low Speed Control

428

* Option/accessory.

STARTING AND DRIVING

Points to remember when driving with

HDC

Activating and deactivating hill

descent control* with the function

button

There is a function button for hill descent

control with Hill Descent Control in the cen-

tre display's function view unless the car was

equipped with a drive mode button in the

centre console.

NOTE

The function is deactivated when driving at

higher speeds and must be reactivated at a

lower speed, if required.

If the function is disabled while driving on

a steep downhill gradient, the braking

effect will gradually decrease.

•

With automatic gearbox

Related information

HDC can be used in gear position D, R,

and with 1st or 2nd gear with manual gear

changing.

•

Activating and deactivating hill descent

control * with the function button (p. 429)

•

Selecting hill descent control in the

centre display function view

Hill descent control only works at low speeds.

Changing drive mode* (p. 419)

Low speed control* (p. 427)

All-wheel drive* (p. 416)

•

It is not possible to change to 3rd gear or

higher with manual gear changing.

•

With manual gearbox

–

Press the Hill Descent Control button to

activate or deactivate the function.

HDC only brakes in 1st gear or with

reverse gear (R). There is no active braking

in higher gears even though the function is

not deactivated until approx. 40 km/h (25

mph).

•

NOTE

> An indicator in the button illuminates

when the function is activated.

When LSC with HDC is activated, the feel

of the accelerator pedal and engine

response are changed.

This function is disabled automatically when

the engine is switched off.

NOTE

The driving mode is not designed to be

used on public roads.

The function is deactivated when driving at

higher speeds and must be reactivated at a

lower speed, if required.

}}

* Option/accessory. 429

STARTING AND DRIVING

Do not run the engine to operating tem-

perature at idling speed, but rather drive

with a normal load right after starting – a

cold engine consumes more fuel than a

warm one.

Related information

Economical driving

•

Hill descent control * (p. 428)

•

Drive economically and in a more eco-friendly

way by driving gently and anticipating situa-

tions.

Adapt your driving style and speed to the pre-

vailing situation.

Changing drive mode* (p. 419)

•

If possible, avoid using the car for driving

short distances. The engine does not have

time to reach normal operating tempera-

ture, which contributes to increased fuel

consumption.

Note the following:

For lower fuel consumption, activate Eco

•

drive mode.

Use engine braking to slow down, when it

can take place without risk to other road

users.

•

Use the Eco Coast freewheel function in

Eco drive mode – engine braking ceases,

meaning that the car's kinetic energy is

•

used to freewheel for longer distances¹⁸

Drive with the correct air pressure in the

tyres and check this regularly - select ECO

tyre pressure for best results.

When driving with manual gear changing

– drive in the highest gear possible, adap-

ted to the current traffic situation and road

– lower engine speeds result in lower fuel

consumption. Use the gear shift indicator.

•

Choice of tyres can affect fuel consump-

tion - seek advice on suitable tyres from a

retailer.

Drive at a steady speed and keep a good

distance to other vehicles and objects to

minimise braking.

•

Remove unnecessary items from the car -

the greater the load the higher the con-

sumption.

High speed results in increased fuel con-

sumption - the wind resistance increases

with speed.

A roof load and space box increase wind

resistance, leading to higher consumption

- remove the load carriers when not in use.

Trip computer indication for instantaneous

fuel consumption can be helpful for driving

more economically.

Avoid driving with open windows.

Applies to automatic gearbox.

430

* Option/accessory.

Starting and driving -> Hill descent control for Your Volvo XC40 SUV 2020

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