Stop/Start System - If Equipped; Autostop Mode; Possible Reasons The Engine Does Not Autostop; To Start The Engine While In Autostop Mode - Jeep GRAND CHEROKEE 2023 Owner's Manual

128 STARTING AND OPERATING
STOP/START SYSTEM — IF EQUIPPED
The Stop/Start 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.
This vehicle has been upgraded with a heavy-duty starter,
enhanced battery, and other upgraded engine parts, to
handle the additional engine starts.
A M
UTOSTOP ODE
The Stop/Start feature is enabled after every normal
customer engine 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 page 84.
Ú
 The vehicle must be completely stopped.
 The gear selector must be in a forward gear and the
brake pedal pressed.
The engine will shut down, the tachometer will move to the
zero position and the Stop/Start telltale will illuminate
indicating you are in Autostop. Customer settings will be
maintained upon return to an engine running condition.
P R T E
OSSIBLE EASONS HE
N A
OT UTOSTOP
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. In the following situations, the engine
will not stop:
 Driver's seat belt is not buckled.
 Driver's door is not closed.
 Battery temperature is too warm or cold.
 Battery charge is low.
 The vehicle is on a steep grade.
 Cabin heating or cooling is in process and an accept-
able cabin temperature has not been achieved.
 HVAC is set to full defrost mode at a high blower speed.
 HVAC is set to MAX A/C.
 Engine has not reached normal operating temperature.
 The transmission is not in a forward gear.
 Hood is open.
 Brake pedal is not pressed with sufficient pressure.
D
 Accelerator pedal input.
NGINE OES
 Engine temperature is too high.
 5 mph (8 km/h) threshold has not been achieved from
previous Autostop.
 Steering angle is beyond threshold.
It may be possible for the vehicle to be driven several
times without the Stop/Start system going into a STOP/
START READY state under more extreme conditions of the
previously listed items.
T S
O TART
A
UTOSTOP
While in a forward gear, the engine will start when the
brake pedal is released or the throttle pedal is pressed.
The transmission will automatically re-engage upon
engine restart.
T E W I
HE NGINE HILE N
M
ODE