USING HILL DESCENT CONTROL
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 0 mph (0 km/h). When
stopped, the parking brake must be applied
or the vehicle must be placed in park (P) 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 3 mph
(5 km/h) and 20 mph (32 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 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 chime sounds when the system
is about to disengage for cooling. At this
time, manually apply the brakes to maintain
descent speed.
Using Hill Descent Control
Press and release the hill descent
button in the center of the terrain
management control. The button
illuminates and a chime sounds when you
switch this feature on.
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.
193
Navigator (TB5) Canada/United States of America, enUSA, First Printing
Terrain Response
(If Equipped)