Electronic Roll Mitigation (Erm); Electronic Stability Control (Esc) - Jeep 2013 Wrangler Owner's Manual

Electronic Roll Mitigation (ERM)

This system 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 steer-
ing wheel angle and vehicle's speed are suffi-
cient to potentially cause wheel lift, it applies the
appropriate brake and may reduce engine
power to lessen the chance that wheel lift will
occur. ERM will only intervene during very se-
vere or evasive driving maneuvers.
Electronic Roll Mitigation (ERM) can only re-
duce 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 or striking
objects or other vehicles.
NOTE:
Anytime the ESC system is in the "Full Off"
mode, ERM is disabled. Refer to Electronic
Stability Control (ESC) for a complete expla-
nation of the available ESC modes.
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WARNING!
Many factors, such as vehicle loading, road
conditions and driving conditions, influence
the chance that wheel lift or rollover may
occur. Electronic Roll Mitigation (ERM) can-
not prevent all wheel lift or rollovers, espe-
cially 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.

Electronic Stability Control (ESC)

This system enhances directional control and
stability of the vehicle under various driving
conditions. The ESC corrects for over/under
steering of the vehicle by applying the brake of
the appropriate wheel to assist in counteracting
the over/under steer condition. Engine power
may also be reduced to help the vehicle main-
tain the desired path.
ESC uses sensors in the vehicle to determine
the vehicle path intended by the driver and
compares it to the actual path of the vehicle.
When the actual path does not match the
intended path, ESC applies the brake of the
appropriate wheel to assist in counteracting the
oversteer or understeer condition.
• Oversteer - when the vehicle is turning more
than appropriate for the steering wheel posi-
tion.
• Understeer - when the vehicle is turning less
than appropriate for the steering wheel posi-
tion.
The "ESC Activation/Malfunction Indicator
Light" (located in the instrument cluster), starts
to flash as soon as the tires lose traction and the
ESC system becomes active. The "ESC
Activation/Malfunction Indicator Light" also
flashes when TCS is active. If the "ESC
Activation/Malfunction Indicator Light" begins to
flash during acceleration, ease up on the accel-
erator and apply as little throttle as possible. Be
sure to adapt your speed and driving to the
prevailing road conditions.
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