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92 SAFETY
Dynamic Steering Torque (DST)
Dynamic Steering Torque (DST) is a feature of
the ESC and Electric Power Steering (EPS)
modules that provides torque at the steering
wheel for certain driving conditions in which the
ESC module is detecting vehicle instability. The
torque that the steering wheel receives is only
meant to help the driver realize optimal steering
behavior in order to reach/maintain vehicle
stability. The only notification the driver receives
that the feature is active is the torque applied to
the steering wheel.
NOTE:
The DST feature is only meant to help the driver
realize the correct course of action through small
torques on the steering wheel, which means the
effectiveness of the DST feature is highly depen-
dent on the driver’s sensitivity and overall reac-
tion to the applied torque. It is very important to
realize that this feature will not steer the vehicle,
meaning the driver is still responsible for steering
the vehicle.
Electronic Brake Force Distribution (EBD)
Electronic Brake Force (EBD) manages the
distribution of the braking torque between the
front and rear axles by limiting braking pressure
to the rear axle. This is done to prevent overslip
of the rear wheels to avoid vehicle instability,
and to prevent the rear axle from entering ABS
before the front axle.
Electronic Roll Mitigation (ERM)
Electronic Roll Mitigation (ERM) anticipates the
potential for wheel lift by monitoring the driver’s
steering wheel input and the speed of the
vehicle. When ERM determines that the rate of
change of the steering wheel angle and
vehicle’s speed are sufficient to potentially
cause wheel lift, it then applies the appropriate
brake and may also reduce engine power to
lessen the chance that wheel lift will occur. ERM
can only reduce the chance of wheel lift occur-
ring during severe or evasive driving maneu-
vers; it cannot prevent wheel lift due to other
factors, such as road conditions, leaving the
roadway, or striking objects or other vehicles.
Electronic Stability Control (ESC)
Electronic Stability Control (ESC) enhances
directional control and stability of the vehicle
under various driving conditions. ESC corrects
for oversteering or understeering of the vehicle
by applying the brake of the appropriate
wheel(s) to assist in counteracting the oversteer
or understeer condition. Engine power may also
be reduced to help the vehicle maintain the
desired path.
WARNING!
Many factors, such as vehicle loading, road
conditions and driving conditions, influence
the chance that wheel lift or rollover may
occur. ERM cannot prevent all wheel lift or
roll overs, especially those that involve
leaving the roadway or striking objects or
other vehicles. The capabilities of an
ERM-equipped vehicle must never be
exploited in a reckless or dangerous manner
which could jeopardize the user's safety or
the safety of others.
2020_FIAT_500X_OM_USA=GUID-B0E0CFCD-ED13-4DFD-975F-620984F05523=1=en=.book Page 92
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