RAM 1500 2019, User Manual

Page: 166 / 340

2. The vehicle must be completely stopped.
3. The transmission Gear Selector must be
in DRIVE and the brake pedal depressed.
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.
Possible Reasons The Engine
Does Not Autostop
Prior to engine shut down, the system will
check many safety and comfort conditions to
see if they are fulfilled. In following situa-
tions, 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 acceptable 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 temperature too high.
• The battery is charging.
• The transmission is not in DRIVE.
• Hood is open.
• Vehicle is in 4LO transfer case mode.
• Accelerator pedal input.
• Excessive 12 volt loads.
It may be possible to operate the vehicle
several consecutive times in extreme condi-
tions and not meet all criteria to enable an
Autostop state.
To Start The Engine While In
Autostop Mode
While in DRIVE, the engine will start when
the brake pedal is released or the throttle
pedal is depressed 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.
• Low brake vacuum (e.g. after several brake
pedal applications).
• STOP/START OFF switch is pushed.
• 4WD system is put into 4LO mode.
• The emissions system override is present.
• A STOP/START system error present.
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