User Manual - Page 123

For 2021 JEEP GRAND CHEROKEE.

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STARTING AND OPERATING 121
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.
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.
Battery charge is low.
The vehicle is on a steep grade.
Cabin heating or cooling is in process and an
acceptable 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.
Vehicle is in 4WD LOW transfer case mode.
Brake pedal is not pressed with sufficient
pressure.
Engine temp too high.
5 mph (8 km/h) threshold not achieved from
previous AUTOSTOP.
Accelerator pedal input.
Steering angle beyond threshold.
Vehicle at a higher altitude.
Ambient temperature is outside operating
range.
Gear selector in MANUAL (M) mode.
Stop/Start related system malfunction.
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 items listed
above.
TO START THE ENGINE WHILE IN
A
UTOSTOP MODE
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.
Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:
The transmission selector is moved out of
DRIVE.
To maintain cabin temperature comfort.
HVAC is set to full defrost mode.
HVAC system temperature or fan speed is
manually adjusted.
4
21_WK_OM_EN_USC_t.book Page 121
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