RAM 1500 2023, Owner'S Manual

Page: 144 / 416

142 STARTING AND OPERATING
To Activate The Autostop Mode, The Following Must Occur:
1. The system must be in STOP/START READY state. A
STOP/START READY message is displayed in the
instrument cluster within the Stop/Start section
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page 98.
2. The vehicle must be decelerating and likely coming to
a complete stop.
3. The transmission gear selector must be in DRIVE 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 an Autostop. While in an Autostop,
the Climate Controls system may automatically adjust
airflow to maintain cabin comfort. 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.
In following situations, the engine will not Autostop:

Driver’s seat belt is not buckled

Driver’s door is not closed
 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

Engine has not reached normal operating temperature

Engine or exhaust temperature is too high
 The battery is charging

The transmission is not in DRIVE

Hood is open

Transfer case is in 4WD LOW
 TOW/HAUL mode is selected

Accelerator pedal input

Excessive 12 Volt loads

Brake application is adequate to obtain and maintain
a stop
It may be possible to operate the vehicle several
consecutive times in extreme conditions and not meet all
criteria to enable an Autostop state.
T
O
S
TART
T
HE
E
NGINE
W
HILE
I
N
A
UTOSTOP
M
ODE
While in DRIVE, the engine will start when the brake pedal
is released or the accelerator pedal is pressed and the
transmission will automatically reengage upon engine
restart.
Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode
The engine will start automatically when:

The transmission selector is moved from DRIVE to
REVERSE, NEUTRAL, or PARK

To maintain cabin temperature near the HVAC settings

HVAC is set to full defrost mode
 12 Volt demand requires engine restart

Stop/Start OFF switch is pushed

Transfer case is in 4WD LOW

The emissions system override is present
 A Stop/Start system error is present
Conditions That Force An Automatic Shift To Park While In
Autostop Mode
The engine will not start automatically and the
transmission will be placed in PARK if:

The driver door is open and brake pedal released

The driver door is open and the driver seat belt is
unbuckled

The engine hood has been opened

A Stop/Start system error is present
The engine may then be restarted by moving the
transmission shift selector out of PARK (e.g., to DRIVE) or,
in some cases, only by a key start. The instrument cluster
will display a “SHIFT OUT OF PARK” message, or a
“STOP/START KEY START REQUIRED” message, to
indicate which action is required
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23_DT_OM_EN_USC_t.book Page 142