Jeep Wrangler 2014 Owner's Manual page 475

When in ESC Off mode, ESC and TCS, except for the Brake
Limited Differential (BLD) feature described in the TCS
section, are turned off until the vehicle reaches a speed of
40 mph (64 km/h). For speeds at or exceeding 40 mph (64
km/h) the ESC goes into partial off. When the vehicle
speed drops below 35 mph (56 km/h), the ESC system goes
back to off. To turn ESC on again, momentarily press the
ESC OFF switch. This will restore normal "ESC On" mode
of operation. The ESC Off Indicator Light" will always be
illuminated when ESC is off and partial off.
WARNING!
With the ESC in Full Off mode, the engine torque
reduction and stability features offered by ESC and
ERM are disabled. In an emergency evasive maneu-
ver, the ESC and ERM systems will not engage to
assist in maintaining stability. The "Full Off" ESC
mode is intended for off-road use only.
4L Range (4WD Models)
ESC Off
This is the normal operating mode for ESC in 4L range.
Whenever the vehicle is started in 4L range, or the
transfer case (if equipped) is shifted from 4H range or
NEUTRAL to 4L range, the ESC system will be in this
mode. In 4L range, ESC and TCS, except for the Brake
Limited Differential (BLD) feature described in the TCS
section, are turned off until the vehicle reaches a speed of
40 mph (64 km/h). For speeds at or exceeding 40 mph
(64 km/h) the ESC goes into partial off. When the vehicle
speed drops below 35 mph (56 km/h), the ESC system
shuts off. The ESC is off at low vehicle speeds in 4L range
so that it will not interfere with off-road driving, but the
ESC function returns to provide the stability feature at
speeds above 40 mph (64 km/h). The "ESC OFF Indicator
Light" will always be illuminated in 4L range when ESC
is off.
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