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PRINCIPLE OF OPERATION
WARNING: 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.
WARNING: Hill descent control does
not provide hill hold at zero miles per hour
(0 kilometers per hour). When stopped,
you must apply the parking brake or place
the vehicle in P (Park), or it may roll away.
Hill descent control allows you 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 you cannot use the system to set or
maintain the descent speed.
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 provides a warning in the
message center and a tone sounds 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
You can switch the hill descent
control on and off through the
information display.
To increase descent speed, press the
accelerator pedal until you reach the desired
speed. To decrease descent speed, press
the brake pedal until you reach the desired
speed.
Whether accelerating or decelerating, once
you reach the desired descent speed,
remove your feet from the pedals and hill
descent control maintains the chosen vehicle
speed.
Note: You may observe noise from the ABS
pump motor 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 between 2 mph (3 km/h) and
20 mph (32 km/h): Your vehicle maintains
the speed you desire while in this mode.
• At speeds between 20 mph (32 km/h)
and 40 mph (64 km/h): Your vehicle does
not maintain the speed you desire and
you cannot set your descent speed.
• At speeds above 40 mph (64 km/h): You
need to switch this feature back on to
use.
Refer to the Information Display for additional
hill descent control messages. See
Information Messages (page 125).
235
Navigator (TB9) Canada/United States of America, enUSA, Edition date: 201808, First-Printing
Hill Descent Control (If Equipped)
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