Jeep GRAND CHEROKEE 2023, Owner'S Manual

Page: 129 / 394

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
UTOSTOP
M
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
Ú
page 84.
 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
OSSIBLE
R
EASONS
T
HE
E
NGINE
D
OES
N
OT
A
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.
 Accelerator pedal input.

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
O
S
TART
T
HE
E
NGINE
W
HILE
I
N
A
UTOSTOP
M
ODE
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.
23_W7_OM_EN_IN_t.book Page 128