GAC MOTOR GS4 - Anti-Lock Brake System (ABS)

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5. Driving guide
5.3.2 Anti-lock brake system
(ABS)
Anti-lock brake system (ABS) is a subsystem
of ESP.When the driver brakes, ABS
automatically monitors the slip rate of the
front and rear wheels, and when the wheels
are to be locked, adjusts the wheel cylinder
hydraulic pressure through pressure holding,
depressurisation, and pressurisation to keep

thereby preventing the wheels from being
locked.
When the ABS starts working after the driver
depresses the brake pedal in an emergency,
the driver will feel the brake pedal shuddering,
accompanied by the “click” sounds when the
brake master cylinder is running.It is normal
that shuddering is felt when the ABS works
after the brake pedal is depressed in the
following situations:
- During gear changes.
- During emergency braking.
- During sharp turns at high speed.
- When driving on slippery roads.
- When passing over bumps or ditches.
- When driving off immediately after
starting.
Anti-lock braking system (ABS) indicator lamp
After the ignition switch is switched to
“ON” position, the indicator lamp
on the
instrument cluster will be on for a few seconds
and go out after the system completes self-
test.
If the following conditions occur, it indicates
that the system is faulty:
- After the ignition switch is switched to “ON”
position, the indicator lamp
on the
instrument cluster does not come on.
- After the ignition switch is switched to “ON”
position, the indicator lamp
on the
instrument cluster does not go out after it
is on for a few seconds.
- When the vehicle is running, the indicator
lamp
on the instrument cluster lights
up.
- When there is a fault in the ABS, the
indicator lamps , and on the
instrument cluster will light up.
Electronic brake force distribution (EBD)
As a part of ABS, EBD balances the distribution
of braking force on the front and rear wheels
according to the vehicle load during normal
braking.
Hydraulic brake assist (HBA)
Most drivers can brake in time in an
emergency, but they cannot depress the
brake pedal hard enough in a short time.
Therefore, the brake system cannot generate
the maximum braking force, resulting in an
increase in braking distance as well as the risk
of accidents.
WARNING
HBA can improve your driving safety,
but it is impossible to exceed the laws of
kinematics.Pleaseadjustthedrivingspeed
accordingtotheroadconditionsandtra󰀩c
regulations.