Hill Start Aid - freightliner M2 Plus 2023 Manual

Driver Assistance Features
02/17/2017
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
06/14/2016
1. Descent Control Mode Active Telltale
Fig. 7.4, Descent Control Mode Telltale, ICUC
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
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.
7.3
0
1
2
08/08/2022
3
Fig. 7.5, Descent Mode Speed Set Notification, ICUC
f270164a
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
decelerates at a constant rate until the vehicle comes
to a stop, unless the accelerator pedal is applied to
1
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
f611425
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.
Fig. 7.5.
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.
f611818
Fig. 7.3. The vehicle