2021 RAM 1500 manual transmission

5
AUTOMATIC TRANSMISSION .......................... 154 Ignition Park Interlock ...............................155
Brake/Transmission Shift Interlock
System .......................................................155 Eight-Speed Automatic Transmission.......156
FOUR-WHEEL DRIVE OPERATION —
IF EQUIPPED ...................................................... 161
Four-Position Electronically Shifted
Transfer Case — If Equipped ....................161 Five-Position Electronically Shifted
Transfer Case — If Equipped ....................163
ACTIVE-LEVEL FOUR CORNER AIR
SUSPENSION SYSTEM — IF EQUIPPED ........... 165 Description .................................................165
Air Suspension Modes...............................167
Instrument Cluster Display Messages......168Operation....................................................168
ACTIVE-LEVEL FOUR CORNER AIR
SUSPENSION SYSTEM (REBEL MODELS
ONLY) — IF EQUIPPED ....................................... 169 Description .................................................169
Air Suspension Modes...............................171
Instrument Cluster Display Messages......171Operation....................................................172
AXLE LOCK SYSTEM — IF EQUIPPED .............. 173
LIMITED-SLIP DIFFERENTIAL —
IF EQUIPPED ....................................................... 174
POWER STEERING ............................................. 174 Electric Power Steering ............................174 FUEL SAVER TECHNOLOGY 5.7L ENGINES
ONLY — IF EQUIPPED......................................... 175
STOP/START SYSTEM — IF EQUIPPED ............ 175 Autostop Mode........................................... 175
Possible Reasons The Engine Does Not
Autostop ..................................................... 175 To Start The Engine While In Autostop
Mode........................................................... 176 To Manually Turn Off The Stop Start
System ........................................................ 176 To Manually Turn On The Stop Start
System ........................................................ 177 System Malfunction................................... 177
CRUISE CONTROL SYSTEMS —
IF EQUIPPED ...................................................... 177
Cruise Control — If Equipped..................... 177Adaptive Cruise Control (ACC) —
If Equipped ................................................. 179
PARKSENSE FRONT/REAR PARK ASSIST
SYSTEM — IF EQUIPPED ....................................189
ParkSense Sensors ................................... 190
ParkSense Warning Display ...................... 190
ParkSense Display ..................................... 190
Enabling And Disabling Front And/Or
Rear ParkSense ......................................... 193 Service The ParkSense Park Assist
System ........................................................ 193 Cleaning The ParkSense System.............. 194
ParkSense System Usage Precautions .... 194 PARKSENSE ACTIVE PARK ASSIST
SYSTEM — IF EQUIPPED ................................... 195
Enabling And Disabling The ParkSense
Active Park Assist System ......................... 196 Parallel/Perpendicular Parking Space
Assistance Operation ................................ 197
LANESENSE — IF EQUIPPED ........................... 199
LaneSense Operation................................ 199
Turning LaneSense On Or Off ................... 200
LaneSense Warning Message .................. 200Changing LaneSense Status..................... 202
PARKVIEW REAR BACK UP CAMERA ............. 202
AUX Camera — If Equipped ...................... 204
SURROUND VIEW CAMERA SYSTEM — IF
EQUIPPED ........................................................... 204
AUX Camera — If Equipped ...................... 208
REFUELING THE VEHICLE — GASOLINE
ENGINE ................................................................ 208
REFUELING THE VEHICLE — DIESEL
ENGINE ............................................................... 210
Avoid Using Contaminated Fuel ............... 210Bulk Fuel Storage — Diesel Fuel ............... 210Diesel Exhaust Fluid .................................. 211
Diesel Exhaust Fluid Storage .................... 211Adding Diesel Exhaust Fluid ..................... 211

21_DT_OM_EN_USC_t.book Page 5

10
INTRODUCTION
Dear Customer, congratulations on the purchase of your new Ram vehicle. Be assured that it represents precision workmanship, distinctive styling, and
high quality.
This is a specialized utility vehicle. It can go places and perform tasks that are not intended for conventional passenger vehicles. It handles and
maneuvers differently from many passenger vehicles both on-road and off-road, so take time to become familiar with your vehicle. If equipped, the
two-wheel drive version of this vehicle was designed for on-road use only. It is not intended for off-road driving or use in other severe conditions suited
for a four-wheel drive vehicle. Before you start to drive this vehicle, read the Owner’s Manual. Be sure you are familiar with all vehicle controls,
particularly those used for braking, steering, transmission, and transfer case shifting. Learn how your vehicle handles on different road surfaces. Your
driving skills will improve with experience. When driving off-road, or working the vehicle, don’t overload the vehicle or expect the vehicle to overcome
the natural laws of physics. Always observe federal, state, provincial and local laws wherever you drive. As with other vehicles of this type, failure to
operate this vehicle correctly may result in loss of control or a collision Úpage 234.
This Owner's Manual has been prepared with the assistance of service and engineering specialists to acquaint you with the operation and maintenance
of your vehicle. It is supplemented by customer-oriented documents. Within this information, you will find a description of the services that FCA US LLC
offers to its customers as well as the details of the terms and conditions for maintaining its validity. Please take the time to read all of these publications
carefully before driving your vehicle for the first time. Following the instructions, recommendations, tips, and important warnings in this manual will help
ensure safe and enjoyable operation of your vehicle.
This Owner's Manual describes all versions of this vehicle. Options and equipment dedicated to specific markets or versions are not expressly indicated
in the text. Therefore, you should only consider the information that is related to the trim level, engine, and version that you have purchased. Any content
introduced throughout the Owner's Information, which may or may not be applicable to your vehicle, will be identified with the wording “If Equipped”.
All data contained in this publication are intended to help you use your vehicle in the best possible way. FCA US LLC aims at a constant improvement
of the vehicles produced. For this reason, it reserves the right to make changes to the model described for technical and/or commercial reasons. For
further information, contact an authorized dealer.
When it comes to service, remember that authorized dealers know your Ram best, have factory-trained technicians and genuine MOPAR® parts, and
care about your satisfaction.

21_DT_OM_EN_USC_t.book Page 10

STARTING AND OPERATING141
(Continued)
NOTE:
Engine start up in very low ambient temperature
could result in evident white smoke. This condi -
tion will disappear as the engine warms up.
AUTOMATIC TRANSMISSION
Start the engine with the transmission in PARK
position. Apply the brake before shifting into any
driving range.
NOTE:
This vehicle is equipped with a transmission
shift interlocking system. The brake pedal
must be pressed to shift out of PARK.
If equipped with an 8-speed transmission,
starting the vehicle in NEUTRAL is not
possible unless the Manual Park Release has
been activated Ú page 390.
AUTOPARK
AutoPark is a supplemental feature to assist in
placing the vehicle in PARK should the
situations on the following pages occur. It is a
back up system and should not be relied upon as the primary method by which the driver shifts
the vehicle into PARK.
The conditions under which AutoPark will
engage are outlined on the following pages.
Do not leave the key fob in or near the
vehicle, or in a location accessible to chil-
dren, and do not leave the ignition of a
vehicle equipped with Keyless Enter-N-Go
in the ACC or ON/RUN mode. A child could
operate power windows, other controls, or
move the vehicle.
Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury or
death.
CAUTION!
The engine is allowed to crank as long as
25 seconds. If the engine fails to start
during this period, please wait at least two
minutes for the starter to cool before
repeating start procedure.
WARNING!
(Continued)
If the “Water in Fuel Indicator Light”
remains on, DO NOT START engine before
you drain the water from the fuel filter to
avoid engine damage Ú page 412.
CAUTION! (Continued)
WARNING!
Driver inattention could lead to failure to
place the vehicle in PARK. ALWAYS DO A
VISUAL CHECK that your vehicle is in PARK
by verifying that a solid (not blinking) “P” is
indicated in the instrument cluster display
and near the gear selector. If the “P” indi -
cator is blinking, your vehicle is not in
PARK. As an added precaution, always
apply the parking brake when exiting the
vehicle.
AutoPark is a supplemental feature. It is not
designed to replace the need to shift your
vehicle into PARK. It is a back up system
and should not be relied upon as the
primary method by which the driver shifts
the vehicle into PARK.
4

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STARTING AND OPERATING151
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE
The diesel engine does not require a break-in
period due to its construction. Normal operation
is allowed, providing the following
recommendations are followed:
Warm up the engine before placing it under
load.
Do not operate the engine at idle for
prolonged periods.
Observe vehicle oil pressure and tempera -
ture indicators.
Check the coolant and oil levels frequently.
Vary throttle position at highway speeds
when carrying or towing significant weight.
NOTE:
Light duty operation such as light trailer towing
or no load operation will extend the time before
the engine is at full efficiency. Reduced fuel
economy and power may be seen at this time.
The engine oil installed in the engine at the
factory is a high-quality energy conserving type
lubricant. Oil changes should be consistent with anticipated climate conditions under which
vehicle operations will occur. For the
recommended viscosity and quality grades
Ú
page 475.
NOTE:
NON-DETERGENT OR STRAIGHT MINERAL OILS
MUST NEVER BE USED.
PARKING BRAKE
ELECTRIC PARK BRAKE (EPB)
Your vehicle is equipped with an EPB that offers
simple operation, and some additional features
that make the parking brake more convenient
and useful.
The parking brake is primarily intended to
prevent the vehicle from rolling while parked.
Before leaving the vehicle, make sure that the
parking brake is applied. Also, be certain to
leave the transmission in PARK.
You can engage the parking brake in two ways:
Manually, by applying the parking brake
switch.
Automatically, by enabling the Auto Park
Brake feature in the customer programmable
features section of the Uconnect settings. The parking brake switch is located on the
instrument panel to the left of the steering
wheel (below the headlamp switch).

Electric Park Brake Switch

To apply the parking brake manually, pull up on
the switch momentarily. You may hear a slight
sound from the back of the vehicle while the
parking brake engages. Once the park brake is
fully engaged, the BRAKE telltale light in the
instrument cluster and an indicator on the
switch will illuminate. If your foot is on the brake
pedal while you apply the parking brake, you
may notice a small amount of brake pedal
movement. The parking brake can be applied
even when the ignition switch is OFF but the
BRAKE telltale light will not illuminate, however,
it can only be released when the ignition is in
the ON/RUN mode.
4

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152STARTING AND OPERATING
(Continued)
NOTE:
The EPB fault light will illuminate if the EPB
switch is held for longer than 20 seconds in
either the released or applied position. The light
will extinguish upon releasing the switch.
If the Auto Park Brake feature is enabled, the
parking brake will automatically engage
whenever the transmission is placed into PARK.
If your foot is on the brake pedal, you may notice
a small amount of brake pedal movement while
the parking brake is engaging.
The parking brake will release automatically
when the ignition is ON, the transmission is in
DRIVE or REVERSE, the driver seat belt is
buckled, and an attempt is made to drive away.
To release the parking brake manually, the
ignition switch must be in the ON/RUN mode.
Put your foot on the brake pedal, then push the
parking brake switch down momentarily. You
may hear a slight whirring sound from the back
of the vehicle while the parking brake
disengages. You may also notice a small
amount of movement in the brake pedal. Once
the parking brake is fully disengaged, The
BRAKE telltale light in the instrument cluster
and the LED indicator on the switch will
extinguish.NOTE:
When parking on a hill, it is important to turn the
front wheels toward the curb on a downhill
grade and away from the curb on an uphill
grade. Apply the parking brake before placing
the gear selector in PARK, otherwise the load on
the transmission locking mechanism may make
it difficult to move the gear selector out of PARK.
WARNING!
Never use the PARK position as a substi
-
tute for the parking brake. Always apply the
parking brake fully when parked to guard
against vehicle movement and possible
injury or damage.
When exiting the vehicle, always remove
the key fob from the ignition and lock your
vehicle.
Never leave children alone in a vehicle, or
with access to an unlocked vehicle.
Allowing children to be in a vehicle unat -
tended is dangerous for a number of
reasons. A child or others could be seriously
or fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
Do not leave the key fob in or near the
vehicle, or in a location accessible to chil -
dren, and do not leave a vehicle equipped
with Keyless Enter-N-Go in the ACC or ON/
RUN mode. A child could operate power
windows, other controls, or move the
vehicle.
Be sure the parking brake is fully disen -
gaged before driving; failure to do so can
lead to brake failure and a collision.
Always fully apply the parking brake when
leaving your vehicle, or it may roll and
cause damage or injury. Also be certain to
leave the transmission in PARK. Failure to
do so may allow the vehicle to roll and
cause damage or injury.
CAUTION!
If the Brake System Warning Light remains on
with the parking brake released, a brake
system malfunction is indicated. Have the
brake system serviced by an authorized
dealer immediately.
WARNING! (Continued)

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STARTING AND OPERATING153
If exceptional circumstances should make it
necessary to engage the parking brake while
the vehicle is in motion, maintain upward
pressure on the EPB switch for as long as
engagement is desired. The BRAKE telltale light
will illuminate, and a continuous chime will
sound. The rear stop lamps will also be
illuminated automatically while the vehicle
remains in motion.
To disengage the parking brake while the
vehicle is in motion, release the switch. If the
vehicle is brought to a complete stop using the
parking brake, when the vehicle reaches
approximately 3 mph, (5 km/h) the parking
brake will remain engaged. In the unlikely event of a malfunction of the EPB
system, a yellow EPB fault light will illuminate.
This may be accompanied by the BRAKE telltale
light flashing. In this event, urgent service of the
EPB system is required. Do not rely on the
parking brake to hold the vehicle stationary.
Auto Park Brake
The Electric Park Brake (EPB) can be
programmed to be applied automatically
whenever the vehicle is at a standstill and the
automatic transmission is placed in PARK. Auto
Park Brake is enabled and disabled by
customer selection through the customer
programmable features section of the Uconnect
Settings Ú
page 245.
Any single Auto Park Brake application can be
bypassed by pushing the EPB switch to the
release position while the transmission is
placed in PARK.
SafeHold
SafeHold is a safety feature of the Electric Park
Brake (EPB) system that will engage the parking
brake automatically if the vehicle is left
unsecured while the ignition is in ON/RUN. The parking brake will automatically engage if
all of the following conditions are met:
The vehicle is at a standstill.
There is no attempt to press the brake pedal
and accelerator pedal.
The seat belt is unbuckled.
The driver door is open.
SafeHold can be temporarily bypassed by
pushing the EPB switch while the driver door is
open. Once manually bypassed, SafeHold will
be enabled again once the vehicle reaches
12 mph (20 km/h) or the ignition is turned to
the OFF position and back to ON again.
Brake Service Mode
We recommend having your brakes serviced by
an authorized dealer. You should only make
repairs for which you have the knowledge and
the right equipment. You should only enter
Brake Service Mode during brake service.
When servicing your rear brakes, it may be
necessary for you or your technician to push the
rear piston into the rear caliper bore. With the
Electric Park Brake (EPB) system, this can only
be done after retracting the EPB actuator.
WARNING!
Driving the vehicle with the parking brake
engaged, or repeated use of the parking
brake to slow the vehicle may cause serious
damage to the brake system. Be sure the
parking brake is fully disengaged before
driving; failure to do so can lead to brake
failure and a collision.
4

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156STARTING AND OPERATING
EIGHT-SPEED AUTOMATIC
T
RANSMISSION
The transmission is controlled using a rotary
electronic gear selector located on the
instrument panel. The transmission gear range
(PRND) is displayed both above the gear
selector and in the instrument cluster. To select
a gear range, simply rotate the gear selector.
You must press the brake pedal to shift the
transmission out of PARK (or NEUTRAL, when
the vehicle is stopped or moving at low speeds).
To shift past multiple gear ranges at once (such
as PARK to DRIVE), simply rotate the gear
selector to the appropriate detent. Select the
DRIVE range for normal driving.
NOTE:
In the event of a mismatch between the gear
selector position and the actual transmission
gear (for example, driver selects PARK while
driving), the position indicator will blink continu -
ously until the selector is returned to the proper
position, or the requested shift can be
completed. The electronically-controlled transmission
adapts its shift schedule based on driver inputs,
along with environmental and road conditions.
The transmission electronics are
self-calibrating; therefore, the first few shifts on
a new vehicle may be somewhat abrupt. This is
a normal condition, and precision shifts will
develop within a few hundred miles
(kilometers).
Only shift from DRIVE to PARK or REVERSE
when the accelerator pedal is released and the
vehicle is stopped. Be sure to keep your foot on
the brake pedal when shifting between these
gears.
The transmission gear selector has only PARK,
REVERSE, NEUTRAL, and DRIVE positions.
Manual downshifts can be made using the
Electronic Range Select (ERS) shift control.
Pressing the GEAR-/GEAR+ switches (on the
steering wheel) while in the DRIVE position will
select the highest available transmission gear,
and will display that gear limit in the instrument
cluster as 1, 2, 3, etc Ú
page 159. Some
models will display both the selected gear limit,
and the actual current gear, while in ERS mode.
Electronic Transmission Gear Selector

Gear Ranges
Do not press the accelerator pedal when
shifting from PARK or NEUTRAL into another
gear range.
NOTE:
After selecting any gear range, wait a moment
to allow the selected gear to engage before
accelerating. This is especially important when
the engine is cold.
PARK (P)
This range supplements the parking brake by
locking the transmission. The engine can be
started in this range. Never attempt to use PARK
while the vehicle is in motion. Apply the parking
brake when exiting the vehicle in this range.

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176STARTING AND OPERATING
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.
TO START THE ENGINE WHILE IN
A
UTOSTOP MODE
While in DRIVE, the engine will start when the
brake pedal is released or the throttle 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 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
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 Ú page 114.
TO MANUALLY TURN OFF THE STOP
S
TART SYSTEM

Stop/Start OFF Switch

Push the Stop/Start OFF switch (located on the
switch bank). The light on the switch will
illuminate. The “STOP/START OFF” message
will appear in the instrument cluster display and
the autostop mode will be disabled
Ú page 114.
NOTE:
The Stop/Start system will reset itself back to
the ON mode every time the ignition is turned
OFF and back ON.

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