speed becomes the set speed after the driver
releases the service brakes. In this instance, a
pop-up window in the ICU notifies the driver that a
new set speed was captured, as shown in
Fig. 7.5.
Descent control mode does not keep the speed
above the lower limit of the set speed, so it is
possible to eventually coast to a stop, unless the
stalk lever is moved to ’off’ (position 0), or the
accelerator pedal is applied.
After accelerator pedal application, descent control
mode is resumed.
Moving the lever to the 0 position deactivates
descent control mode and resumes cruise control,
using the descent control set speed as the cruise
control set speed.
Deceleration Mode
Deceleration mode reduces the vehicle speed at a
constant rate.
While in cruise control, activate deceleration mode
turning on the engine brake using the right-hand
stalk switch as shown in
Fig. 7.3. The vehicle
decelerates at a constant rate until the vehicle comes
to a stop, unless the accelerator pedal is applied to
override the deceleration, or the right-hand stalk
switch is moved to ’off’ position.
Moving the lever to ’off’ resumes the previously set
cruise control speed.
Hill Start Aid
The hill start aid (HSA) feature prevents the vehicle
from rolling on a slope steeper than three percent to
allow for a controlled launch.
HSA prevents a stationary vehicle in forward gear
from rolling downhill prior to continuing to drive up
the hill; HSA also prevents a stationary vehicle in
reverse gear from rolling downhill prior to continuing
to back up the hill.
HSA delays the release of service brakes until
enough torque is available to begin moving the
vehicle, up to a maximum of three seconds. If
sufficient driveline torque is not detected after three
seconds, the system audibly alerts the driver and
releases the brakes.
f270164a02/17/2017
0
1
2
3
0. Resume cruise control set speed
1. Engine Brake Low
2. Engine Brake Medium
3. Engine Brake High
Fig. 7.3, Descent Control Mode Engine Brake Positions
f61142506/14/2016
1
1. Descent Control Mode Active Telltale
Fig. 7.4, Descent Control Mode Telltale, ICUC
f61181808/08/2022
Fig. 7.5, Descent Mode Speed Set Notification, ICUC
Driver Assistance Features
7.3
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