Jeep Grand Cherokee SRT 2019 Owner's Manual page 92

Electronic Stability Control (ESC)
This system 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 con-
dition. Engine power may also be reduced to
help the vehicle maintain 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 in-
tended 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
position.
The "ESC Activation/Malfunction Indicator Light"
located in the instrument cluster will start to flash
as soon as the ESC system becomes active.
The "ESC Activation/Malfunction Indicator Light"
also flashes when the 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.
WARNING!
• Electronic Stability Control (ESC) cannot
prevent the natural laws of physics from
acting on the vehicle, nor can it increase
the traction afforded by prevailing road
conditions. ESC cannot prevent accidents,
including those resulting from excessive
speed in turns, driving on very slippery
surfaces, or hydroplaning. ESC also can-
not prevent accidents resulting from loss of
vehicle control due to inappropriate driver
input for the conditions. Only a safe, atten-
tive, and skillful driver can prevent acci-
dents. The capabilities of an ESC equipped
vehicle must never be exploited in a reck-
less or dangerous manner which could
jeopardize the user's safety or the safety of
others.
• Vehicle modifications, or failure to properly
maintain your vehicle, may change the
handling characteristics of your vehicle,
and may negatively affect the performance
of the ESC system. Changes to the steer-
ing system, suspension, braking system,
tire type and size or wheel size may ad-
versely affect ESC performance. Improp-
erly inflated and unevenly worn tires may
also degrade ESC performance. Any ve-
hicle modification or poor vehicle mainte-
(Continued)
WARNING! (Continued)
nance that reduces the effectiveness of the
ESC system can increase the risk of loss of
vehicle control, vehicle rollover, personal
injury and death.
ESC Operating Modes
NOTE:
Depending upon model and mode of operation,
the ESC system may have multiple operating
modes.
ESC On
This is the normal operating mode for the ESC.
Whenever the vehicle is started, the ESC sys-
tem will be in this mode. This mode should be
used for most driving conditions. Alternate ESC
modes should only be used for specific reasons
as noted in the following paragraphs.
Partial Off
The "Partial Off" mode is intended for times
when a more spirited driving experience is de-
sired. This mode may modify TCS and ESC
thresholds for activation, which allows for more
wheel spin than normally allowed. This mode
may be useful if the vehicle becomes stuck.
To enter the "Partial Off" mode, momentarily
push the "ESC Off" switch and the "ESC Off
Indicator Light" will illuminate. To turn the ESC
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