5-26 OTHER FEATURES
PA1628 H3-41, H3-45 Operator’s Manual
NOTE
Engine brake is safe to use in any road
conditions including adverse conditions.
CRUISE CONTROL AND ENGINE BRAKE
When cruise control is enabled by the driver, the
engine brake mode is forced to AUTO
mode
and the engine brake will progressively engage
up to 100% if the selected cruise speed is
exceeded by approximately 2 Km/h (1.25 mph).
Manually switching to engine brake LOW
or
HIGH
using the steering switches will
deactivate the cruise control.
CRUISE
CONTROL &
SPEED
ENGINE BRAKE
MODE
ENGINE BRAKE
FORCE
+
CRUISE SPEED
SET
+ 2 Km/h
0%
UP TO
100%
N/A
N/A
ENGINE BRAKE FORCE APPLIED WITH CRUISE CONTROL
NOTE
On vehicles equipped with the Allison
transmission, if cruise control is enabled, the
current engine brake mode is saved in the
vehicle computer (MCM) memory and the
engine brake mode is set to Auto mode
.
When the cruise control is disabled, the
engine brake mode changes back to the mode
saved in the MCM memory.
ANTILOCK BRAKING SYSTEM (ABS),
TRACTION CONTROL SYSTEM (TCS) &
ELECTRONIC STABILITY CONTROL (ESC)
ANTILOCK BRAKING SYSTEM (ABS)
The purpose of the Antilock Braking System
(ABS) is to maintain vehicle stability and control
during braking and to minimize the stopping
distance in any road condition.
On slippery roads and more generally in
emergency situations, over-braking frequently
induces wheel locking. Wheel locking greatly
increases breaking distance on any road surface.
Locked wheels also impede directional control
and cause severe tire abrasion. An antilock
braking system provides maximum braking
performance while maintaining adequate
control on slippery roads.
The basis of ABS is constant monitoring of
wheel parameters during braking. Sensors on
each wheel of the front, drive and tag axles
constantly measure wheel speed during braking.
This information is transmitted to a six-channel
electronic processor which senses when any
wheel is about to lock. Modulating valves
quickly adjust brake pressure (up to 5 times
every second) to prevent wheel lock. Each wheel
is therefore controlled according to the available
grip.
In this way, the vehicle is brought to a stop in
the shortest possible time while remaining
stable and under the driver's control.
WARNING
Vehicles following ABS-equipped vehicles
may not be able to brake as fast on slippery
roads.
TRACTION CONTROL SYSTEM (TCS)
TCS controls wheel spin during vehicle
acceleration to improve traction.
The TCS system will intervene automatically
and apply braking pressure to a spinning
wheel transferring engine power to the other
drive wheel that have better traction. This
Summary of Contents for H 2018 Series
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