Hydraulic brake assist (HBA)*
This system can assist the driver in emergency
braking. It determines whether it is necessary to
carry out full braking based on the speed at
which the driver depresses the brake pedal. As
long as the driver depresses the pedal to the
floor all the time, the HBA will automatically
increase the braking force to the threshold at
which the ABS is activated. If the driver releases
the brake pedal, the HBA will reduce the braking
force to the specified value.
The HBA can shorten the braking distance
substantially, and the driver is nearly unaware of
its operation.
Hydraulic brake boost (HBB)*
When the boost effect produced by the vacuum
booster cannot achieve the expected
deceleration of the driver, the HBB can actively
pressurize the brake wheel cylinder through the
ESC to help the driver achieve the expected
braking deceleration, ensuring the driving safety.
When the HBB is activated, clicks produced
during operation of the ESC hydraulic pump can
be heard in the cab, accompanied by brake
pedal shaking and certain pedal sinking, which is
normal.
Hill hold control (HHC)*
The HHC increases the convenience of parking
and starting on a slope.
It is enabled by default. On a slope with a
gradient of 4%~30%, the system will
automatically keep the vehicle braked for 1.5 s
after the brake pedal is released to prevent the
vehicle from sliding. The driver should quickly
depress the accelerator pedal to start the vehicle
during this period.
The HHC will not be enabled under the following
conditions:
● The vehicle is started on a level road or along
the downhill.
● The shift lever is in “N”.
● The parking brake is applied.
● The electronic stability control (ESC) is faulty.
During the short period of time after the
vehicle starts, the instrument cluster may
display “HHC fault”, because the ESC system
is in the process of self-test, which is a
normal phenomenon and has no influence on
HHC.
● The HHC will keep the vehicle still on the
slope within 1.5 s and stop braking. If the
driver fails to depress the brake pedal or
accelerator pedal in time, the vehicle may
slide, resulting in accidents.
● Please quickly move your foot from the
brake pedal to the accelerator pedal and
drive the vehicle forward.
Traction control system (TCS)*
The TCS limits wheel idling and is activated
when the vehicle is started.
When the vehicle is started by depressing the
accelerator pedal to the end or accelerated
suddenly on roads with low adhesion coefficient,
unacceptable slipping (idling) may occur to the
drive wheel, and the TCS can control the
dynamic performance of vehicle through the
intervention of the braking force and engine
system.
● To disable the traction control system, press
the ESC OFF button, after which the ESC
OFF indicator lamp will come on,
indicating that the ESC is deactivated.
● To enable the traction control system, press
the ESC OFF button again.
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