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SAFETY 257
Dynamic Steering Torque (DST)
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 dependent on the driver’s sensitivity and
overall reaction 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)
The EBD function 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 the
Anti-Lock Brake System (ABS) before the front
axle.
Electronic Roll Mitigation (ERM)
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 occurring during severe or evasive
driving maneuvers; it cannot prevent wheel lift
due to other factors, such as road conditions,
leaving the roadway, striking objects or other
vehicles.
Electronic Stability Control (ESC)
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 above conditions. 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.
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21_RUP_OM_EN_USC_t.book Page 257
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