2021 RAM 1500 charging

STARTING AND OPERATING175
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
functionality after a battery disconnect.
STOP/START SYSTEM — IF EQUIPPED
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
automatically 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.
AUTOSTOP MODE

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.

To Activate The Autostop Mode, The Following
Must Occur:

1. 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
Ú
page 114.

2. The vehicle must be completely stopped.
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.
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. 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
Transfer case is in 4WD LOW
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IN CASE OF EMERGENCY387

Positive Battery Post

See below steps to prepare for jump starting:

1. Apply the parking brake, shift the automatic transmission into PARK and
turn the ignition OFF.

2. Turn off the heater, radio, and all electrical accessories.
3. Pull upward and remove the protective cover over the remote positive (+) battery
post.
4. If using another vehicle to jump start the battery, park the vehicle within the jumper
cables’ reach, apply the parking brake and
make sure the ignition is OFF.
JUMP STARTING PROCEDURE
Connecting The Jumper Cables

Jumper Cable Connections

WARNING!
Take care to avoid the radiator cooling fan
whenever the hood is raised. It can start
anytime the ignition switch is ON. You can
be injured by moving fan blades.
Remove any metal jewelry such as rings,
watch bands and bracelets that could
make an inadvertent electrical contact. You
could be seriously injured.
Batteries contain sulfuric acid that can
burn your skin or eyes and generate
hydrogen gas which is flammable and
explosive. Keep open flames or sparks
away from the battery.
WARNING!
Do not allow vehicles to touch each other as
this could establish a ground connection and
personal injury could result.
WARNING!
Failure to follow this jump starting procedure
could result in personal injury or property
damage due to battery explosion.
CAUTION!
Failure to follow these procedures could
result in damage to the charging system of
the booster vehicle or the discharged vehicle.
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388IN CASE OF EMERGENCY

1. Connect the positive
(+) end of the jumper
cable to the positive (+)
post of the
discharged vehicle.

NOTE:
Do not jump off fuses. Only jump directly off
positive post.
2. Connect the opposite end of the positive (+)
jumper cable to the positive (+) post of the
booster battery.
3. Connect the negative (-) end of the jumper
cable to the negative (-) post of the booster
battery.
4. Connect the opposite end of the negative (-)
jumper cable to a good engine ground. A
“ground” is an exposed metallic/unpainted
part of the engine, frame or chassis, such as
an accessory bracket or large bolt. The
ground must be away from the battery and
the fuel injection system. 5. Start the engine in the vehicle that has the
booster battery, let the engine idle a few
minutes, and then start the engine in the
vehicle with the discharged battery.
6. Once the engine is started, follow the disconnection procedure below.
Disconnecting The Jumper Cables

1. Disconnect the negative
(-)
end of the
jumper cable from the engine ground of
the vehicle with the discharged battery.

2. Disconnect the opposite end of the negative (-) jumper cable from the negative (-) post of
the booster battery. 3. Disconnect the positive
(+) end of the
jumper cable from the positive (+) post of
the booster battery.

4. Disconnect the opposite end of the positive (+) jumper cable from the positive
(+) post of the vehicle with the discharged
battery.

If frequent jump starting is required to start your
vehicle you should have the battery and
charging system inspected at an authorized
dealer.
WARNING!
Do not connect the jumper cable to the
negative (-) post of the discharged battery.
The resulting electrical spark could cause the
battery to explode and could result in
personal injury.
CAUTION!
Do not connect jumper cable to any of the
fuses on the positive battery terminal. The
resulting electrical current will blow the fuse.
CAUTION!
Accessories plugged into the vehicle power
outlets draw power from the vehicle’s battery,
even when not in use (i.e., cellular devices, etc.).
Eventually, if plugged in long enough without
engine operation, the vehicle’s battery will
discharge sufficiently to degrade battery life
and/or prevent the engine from starting.

21_DT_OM_EN_USC_t.book Page 388

SERVICING AND MAINTENANCE435
F4530 Amp Pink –Mod Door MUX Driver
F46 30 Amp Pink –Mod Door MUX Passenger
F47 A&B ––Spare
F48A -10 Amp RedRear View Mirror / SW Window Passenger / Rear USB / Wireless
Charging Pad Mod
F49 –15 Amp BlueMod CVPM / SNSR Blind Spot / HDLP Adaptive Front Lighting
Sensor (AFLS)
F50A –10 Amp Red Battery PACK Control Mod
F51 A&B ––Spare
F52 20 Amp Blue –Direct Battery Feed — If Equipped
F53 –10 Amp Red Trailer Reverse Steering Control / Trailer Steering Control Knob
F54B –20 Amp Yellow Power Outlet Center Seat
F55 25 Amp White –Upfitter — If Equipped
F56 30 Amp Pink –Mod Network Interface — If Equipped
F57 20 Amp Blue –Direct Battery Feed — If Equipped
F58 20 Amp Blue –Direct Battery Feed — If Equipped
F60 50 Amp Red –Mod Inverter
F61 ––Spare
F62 A&B –10 Amp RedITBM / Mod Occupant Class / Mod IAIR Suspension / Mod HVAC
Snsr Incar Temp / Rear Coolant Temp / PTS / Mod IRCM / HRLS /
Mod Gateway Trailer TPM
Cavity
Cartridge Fuse Micro Fuse Description
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483
INDEX
A
Adaptive Cruise Control (ACC) (Cruise
Control)
................................................ 177, 179Adding Engine Coolant (Antifreeze)............... 422Adding Fuel.......................................... 208, 210Additives, Fuel............................................... 469AdjustDown........................................................... 36Forward....................................................... 36Rearward..................................................... 36Up................................................................ 36Adjustable Pedals............................................ 43Advance Phone Connectivity......................... 279Air BagAir Bag Operation...................................... 344Air Bag Warning Light...................... 342, 345Enhanced Accident Response......... 353, 394Event Data Recorder (EDR)....................... 394Front Air Bag............................................. 345If Deployment Occurs................................ 352Knee Impact Bolsters................................ 349Maintaining Your Air Bag System.............. 354Maintenance............................................. 354Redundant Air Bag Warning Light.............343Transporting Pets...................................... 369Air Bag Light............................... 126, 342, 369
Air Cleaner, Engine (Engine Air Cleaner
Filter)............................................................ 411Air Conditioner Maintenance........................ 415Air Conditioner Refrigerant........................... 415Air Conditioner System................................. 415Air Conditioning................................................ 63Air Conditioning Filter..............................67, 415Air Conditioning System................................... 65Air Conditioning, Operating Tips....................... 66Air Filter........................................................ 411Air PressureTires......................................................... 450Air Suspension..................................... 165, 169AlarmSecurity Alarm....................................26, 127Alterations/ModificationsVehicle......................................................... 11Antifreeze (Engine Coolant)................. 422, 474Disposal................................................... 423Anti-Lock Brake System (ABS)...................... 310Anti-Lock Warning Light................................ 132Assist, Hill Start............................................. 317Audio Settings............................................... 266Audio Systems (Radio).................................. 236Auto Down Power Windows............................. 78Automatic Door Locks...................................... 30
Automatic Headlights.......................................54Automatic High Beams.....................................53Automatic Tailgate Release.............................85Automatic Temperature Control (ATC)..............65Automatic Transmission....................... 156, 426Adding Fluid.............................................. 426Fluid And Filter Change............................. 426Fluid Change............................................. 426Fluid Level Check...................................... 426Fluid Type........................................ 426, 478Special Additives...................................... 426Automatic Transmission Limp Home Mode... 159AutoPark....................................................... 141AUX Camera......................................... 204, 208Auxiliary Driving Systems.............................. 318Axle Fluid.............................................. 426, 478Axle Lubrication............................................ 426
B
Back-Up......................................................... 202Back-Up Camera........................................... 202Battery................................................. 128, 409Charging System Light.............................. 128Keyless Key Fob Replacement....................18Battery Saver Feature......................................57Belts, Seat.................................................... 369
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492
Pair (Link) Uconnect Phone To A Mobile Phone
................................................... 273Phonebook Download............................... 275Place/Retrieve A Call From Hold............... 278Power-Up................................................... 281Recent Calls.............................................. 277Redial........................................................ 279To Remove A Favorite............................... 276Toggling Between Calls............................. 278Touch-Tone Number Entry......................... 277Transfer Call To And From Mobile Phone.. 279Voice Command........................................ 279Uconnect SettingsCustomer Programmable Features............. 28Passive Entry Programming......................... 28Uconnect System........................................... 256Uniform Tire Quality Grades........................... 460Unleaded Gasoline........................................ 468Untwisting Procedure, Seat Belt.................... 339USB................................................................. 72Utility Rails, Rear Cargo Area........................... 91
V
Vehicle Finder...................................... 295, 303Vehicle Health Alert...................................... 298Vehicle Health Report................................... 297Vehicle Loading................................... 213, 447Vehicle Maintenance.................................... 409Vehicle Modifications/Alterations.................... 11Vehicle Notifications..................................... 298Vehicle Storage.......................................66, 461Voice Command............................................... 41Voice Recognition System (VR)........................ 41
W
Warning Lights (Instrument Cluster
Descriptions)
................................................. 131Warnings And Cautions.................................... 11Warranty Information.................................... 481Washers, Windshield.................................... 408Washing Vehicle........................................... 462WaterDriving Through........................................ 234
Water SeparatorDiesel Fuel................................................ 412Wheel And Wheel Tire Care........................... 456Wheel And Wheel Tire Trim........................... 456Wi-fi............................................................... 296Wind Buffeting.................................................80Window Fogging...............................................66Windows..........................................................77Power...........................................................77Rear Sliding.................................................79Reset Auto-Up..............................................78Windshield Defroster.................................... 369Windshield Washers.............................. 58, 408Fluid................................................... 58, 408Windshield Wiper Blades.............................. 418Windshield Wipers...........................................58Wipers Blade Replacement........................... 418Wipers, Rain Sensitive.....................................59Wireless Charging Pad.....................................77

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