2020 RAM 1500 Owners Manual - FUEL SAVER TECHNOLOGY 5.7L ENGINES ONLY — IF EQUIPPED

FUEL SAVER TECHNOLOGY 5.7L ENGINES ONLY — IF EQUIPPED

This feature offers improved fuel economy by shutting off four of the engine's eight cylinders during light load and cruise conditions. The system is automatic with no driver inputs or additional driving skills required.

NOTE:

This system may take some time to return to full function- ality after a battery disconnect.

The Stop/Start function is developed to save fuel and reduce emissions. The system will stop the engine automatically during a vehicle stop if the required conditions are met. Releasing the brake pedal or shifting out of DRIVE will auto- matically restart the engine.

Vehicles equipped with eTorque contain a heavy duty motor generator and an additional hybrid electric battery to store energy from vehicle deceleration for use on engine startup after a stop as well as providing launch torque assist.

The Stop/Start feature is enabled after every normal customer engine start. It will remain in STOP/START NOT READY until you drive forward with a vehicle speed greater than 2 mph (3 km/h). At that time, the system will go into STOP/START READY and if all other conditions are met, can go into an STOP/START AUTO STOP 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 within the Stop/Start section. Refer to “Instrument Cluster Display” in “Getting To know Your Instrument Panel” for further information.

The vehicle must be completely stopped.

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 indi- cating 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 main- tained upon return to an engine running condition.

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 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 4L transfer case mode

TOW/HAUL mode is selected

Accelerator pedal input

Excessive 12 volt loads

It may be possible to operate the vehicle several consecutive times in extreme conditions and not meet all criteria to enable an Autostop state.

While in DRIVE, the engine will start when the brake pedal is released or the throttle pedal is depressed and the trans- mission will automatically reengage upon engine restart.

Conditions That Will Cause The Engine To Start Automat- ically 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 applica- 5

tions)

STOP/START OFF switch is pushed

4WD system is put into 4L mode

The emissions system override is present

A STOP/START system error 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 present.

The engine may then be restarted by moving the transmis- sion 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.

Refer to “Instrument Cluster Display” in “Getting To Know Your Instrument Panel” for further information.

Push the STOP/START Off switch (located near the gear selector). The light on the switch will illuminate.

STOP/START OFF Switch

The STOP/START OFF message will appear in the instrument cluster display. Refer to “Instrument Cluster Display” in “Getting To Know Your Instrument Panel” for further information.

At the next vehicle stop (after turning off the STOP/ START system) the engine will not be stopped.

If the STOP/START system is manually turned off, the engine can be started and stopped by cycling the ignition switch or pressing the STOP/START switch again.

The STOP/START system will reset itself back to an ON condition every time the key is turned off and back on.

Push the STOP/START Off switch (located near the gear selector module).

The light on the switch will turn off.

If there is a malfunction in the STOP/START system, the system will not shut down the engine. A “SERVICE STOP/ START SYSTEM” message will appear in the instrument cluster display. Refer to “Instrument Cluster Display” in “Getting To Know Your Instrument Panel” for further infor- mation.

The system will need to be checked by your authorized dealer.