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172 STARTING AND OPERATING
STOP/START SYSTEM — AUTOMATIC
TRANSMISSION (IF EQUIPPED)
The Engine Stop/Start (ESS) function is developed
to reduce fuel consumption. The system will stop
the engine automatically during a vehicle stop if
the required conditions are met. Releasing the
brake pedal or pressing the accelerator pedal will
automatically restart the engine.
ESS vehicles have been upgraded with a
heavy-duty starter, enhanced battery, and other
upgraded engine parts, to handle the additional
engine starts. Vehicles equipped with eTorque
contain a heavy-duty motor generator and an
additional hybrid electric battery to store energy
from vehicle deceleration for use on engine startup
after a stop as well as providing launch torque
assist.
NOTE:
It is recommended that Stop/Start system be
disabled during off-road use.
Secondary Battery
Your vehicle may be equipped with a secondary
battery used to power the Stop/Start system and
the 12 Volt vehicle electrical system. The
secondary battery is located behind the wheel well
for the front passenger wheel.
Battery Locations
AUTOSTOP MODE
The Stop/Start feature is enabled after every driver
ignition start. At that time, the system will go into
STOP/START READY and if all other conditions are
met, can go into a STOP/START AUTOSTOP ACTIVE
Autostop mode.
To Activate The Autostop Mode, The Following
Must Occur:
The system must be in STOP/START READY
state. A STOP/START READY message will be
displayed in the instrument cluster display
within the Stop/Start section Ú page 122.
The vehicle must be completely stopped.
The shifter must be in a forward gear and the
brake pedal pressed.
POSSIBLE REASONS THE ENGINE DOES
N
OT AUTOSTOP
Prior to engine shut down, the system will check
many safety and comfort conditions to see if they
are fulfilled. Detailed information about the
operation of the Stop/Start system may be viewed
in the instrument cluster display Stop/Start
Screen. Situations when the engine will not stop
include (but not limited to):
Driver’s seat belt is not buckled.
Driver’s door is not closed.
Battery temperature is too warm or cold.
1 — Primary Battery
2 — Secondary Battery
WARNING!
Vehicles with the Stop/Start system will be
equipped with two batteries. Both the main
and the supplemental batteries must be
disconnected to completely de-energize the
12 Volt electrical system.
Serious injury or death could result if you do
not disconnect both batteries. To learn how to
properly disconnect, see an authorized dealer.
22_JL_OM_EN_USC_t.book Page 172
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