Ford 2015 F-550 v.2 Manuel d'utilisateur télécharger pdf (Page 175)

PRINCIPLE OF OPERATION

WARNINGS

Hill descent control cannot control

descent in all surface conditions and

circumstances, such as ice or

extremely steep grades. Hill descent

control is a driver assist system and cannot

substitute for good judgment by the driver.

Failure to do so may result in loss of vehicle

control, crash or serious injury.

Hill descent control does not provide

hill hold at zero miles per hour (0

kilometers per hour). When stopped,

the parking brake must be applied or the

vehicle must be placed in P (Park) or it

may roll away.

Hill descent control allows the driver to set

and maintain vehicle speed while

descending steep grades in various surface

conditions.

Hill descent control can maintain vehicle

speeds on downhill grades between 2 mph

(3 km/h) and 12 mph (20 km/h). Above 20

mph (32 km/h), the system remains

armed, but descent speed cannot be set

or maintained.

Hill descent control requires a cooling

down interval after a period of sustained

use. The amount of time that the feature

can remain active before cooling varies

with conditions. The system will provide a

warning in the message center and a chime

will sound when the system is about to

disengage for cooling. At this time,

manually apply the brakes as needed to

maintain descent speed.

USING HILL DESCENT

CONTROL

E163957

Press and release the hill

descent button located on the

instrument panel. A light in the

cluster will illuminate and a

chime will sound when this feature is

activated.

To increase descent speed, press the

accelerator pedal until the desired speed

is reached. To decrease descent speed,

press the brake pedal until the desired

speed is reached.

Whether accelerating or decelerating, once

the desired descent speed is reached,

remove your feet from the pedals and the

chosen vehicle speed will be maintained.

Note: Noise from the ABS pump motor may

be observed during hill descent control

operation. This is a normal characteristic of

the ABS and should be no reason for

concern.

Hill descent modes

• At speeds below 20 mph (32 km/h):

When the Hill Descent Control switch

is pressed and Hill Descent Control is

active, the Hill Descent Control telltale

will flash.

• At speeds below 20 mph (32 km/h):

When the Hill Descent Control switch

is pressed and conditions are not

correct for hill descent activation, the

Hill Descent Control system will be

enabled, the Hill Descent Control

telltale will be solid and a message will

display in the information display.

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Terrain Response (If Equipped)

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