2021 RAM CHASSIS CAB height

GETTING TO KNOW YOUR VEHICLE35
POWER DRIVER SEAT ADJUSTMENT — IF
E
QUIPPED
Some models may be equipped with an
eight-way power driver's seat. The power seat
switches are located on the outboard side of the
driver's seat cushion. There are two power seat
switches that are used to control the movement
of the seat cushion and the seatback.

Power Seat Switches

Adjusting The Seat Forward Or Rearward
The seat can be adjusted both forward and
rearward by using the power seat switch.
The seat will move in the direction of the switch.
Release the switch when the desired position
has been reached.
Adjusting The Seat Up Or Down
The height of the seats can be adjusted up or
down by using the power seat switch. The seat
will move in the direction of the switch. Release
the switch when the desired position has been
reached.
Tilting The Seat Up Or Down
The angle of the seat cushion can be adjusted
up or down using the power seat switch.
The front of the seat cushion will move in the
direction of the switch. Release the switch when
the desired position has been reached.
Reclining The Seatback
The angle of the seatback can be adjusted
forward or rearward by using the power seat
switch. The seat will move in the direction of the
switch. Release the switch when the desired
position is reached.
1 — Power Seat Switch
2 — Power Seatback Switch
WARNING!

Adjusting a seat while driving may be
dangerous. Moving a seat while driving could
result in loss of control which could cause a
collision and serious injury or death.

Seats should be adjusted before fastening
the seat belts and while the vehicle is
parked. Serious injury or death could result
from a poorly adjusted seat belt.
Do not ride with the seatback reclined so
that the shoulder belt is no longer resting
against your chest. In a collision you could
slide under the seat belt, which could result
in serious injury or death.
CAUTION!
Do not place any article under a power seat
or impede its ability to move as it may cause
damage to the seat controls. Seat travel may
become limited if movement is stopped by an
obstruction in the seat’s path.
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GETTING TO KNOW YOUR VEHICLE39
NOTE:
Four-way head restraints have seven tilt/
locking positions. When pulling fully forward,
the head restraint will spring back to the
untilted, rearward most position when released.
Two-Way Head Restraints — If Equipped
Your vehicle may be equipped with front
two-way driver and passenger head restraints.
To raise the head restraint, pull upward on the
head restraint. To lower the head restraint,
push the adjustment button, located at the
base of head restraint, and push downward
on the head restraint.

Head Restraint Adjustment Button Location
NOTE:
If your vehicle is equipped with a front bench
seat, the center head restraint is not adjustable
or removable.
Front Head Restraint Removal
To remove the head restraint, push the
adjustment button and the release button
while pulling upward on the whole assembly.
To reinstall the head restraint, put the head
restraint posts into the holes and adjust it to the
appropriate height.
Rear Head Restraint Adjustment
The rear seats are equipped with adjustable
and removable head restraints. To raise the
head restraint, pull upward on the head
restraint. To lower the head restraint, push the
adjustment button located on the base of the
head restraint and push downward on the head
restraint.
WARNING!

All occupants, including the driver, should
not operate a vehicle or sit in a vehicle’s seat
until the head restraints are placed in their
proper positions in order to minimize the risk
of neck injury in the event of a crash.

Head restraints should never be adjusted
while the vehicle is in motion. Driving a
vehicle with the head restraints improperly
adjusted or removed could cause serious
injury or death in the event of a collision.
WARNING!
A loose head restraint thrown forward in a
collision or hard stop could cause serious
injury or death to occupants of the vehicle.
Always securely stow removed head
restraints in a location outside the occu
-
pant compartment.
ALL the head restraints MUST be rein -
stalled in the vehicle to properly protect
the occupants. Follow the re-installation
instructions above prior to operating the
vehicle or occupying a seat.
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40GETTING TO KNOW YOUR VEHICLE

Release/Adjustment Buttons

NOTE:
The rear center head restraint (Crew Cab)
has only one adjustment position that is used
to aid in the routing of a tether Ú page 292.
Do not reposition the head restraint
180 degrees to the incorrect position in an
attempt to gain additional clearance to the
back of the head.
Rear Head Restraint Removal

To remove the head restraint, push the
adjustment button and the release button
while pulling upward on the whole assembly.
To reinstall the head restraint, put the head
restraint posts into the holes and adjust it to
the appropriate height.

NOTE:
To remove outboard restraints, the rear seat
bottom must be folded up.
DRIVER ADJUSTABLE PEDALS — IF
EQUIPPED

The adjustable pedals system is designed to
allow a greater range of driver comfort for
steering wheel tilt and seat position. This feature
allows the brake and accelerator pedals to move
toward or away from the driver to provide
improved position with the steering wheel.

The adjustable pedal switch is located to the left
side of the steering column.

Adjustable Pedals Switch

The pedals can be adjusted with the ignition in
the OFF position.
1 — Release Button
2 — Adjustment Button
WARNING!
A loose head restraint thrown forward in a
collision or hard stop could cause serious
injury or death to occupants of the vehicle.
Always securely stow removed head
restraints in a location outside the occu -
pant compartment.
ALL the head restraints MUST be rein -
stalled in the vehicle to properly protect
the occupants. Follow the re-installation
instructions above prior to operating the
vehicle or occupying a seat.

21_DPF_OM_EN_USC_t.book Page 40

STARTING AND OPERATING175
Service ACC/FCW Warning

If the system turns off, and the instrument cluster
displays “ACC/FCW Unavailable Service
Required” or “Cruise/FCW Unavailable Service
Required”, there may be an internal system fault
or a temporary malfunction that limits ACC
functionality. Although the vehicle is still drivable
under normal conditions, ACC will be temporarily
unavailable. If this occurs, try activating ACC
again later, following an ignition cycle. If the
problem persists, see an authorized dealer.

Precautions While Driving With ACC
NOTE:
Aftermarket add-ons such as snow plows, lift
kits, and brush/grille bars can hinder module
performance. Ensure the radar/camera has
no obstructions in the field of view.
Height modifications can limit module perfor -
mance and functionality.
Do not put stickers or easy passes over the
camera/radar field of view.
Any modifications to the vehicle that may
obstruct the field of view of the radar/camera
are not recommended.
In certain driving situations, ACC may have
detection issues. In these cases, ACC may
brake late or unexpectedly. The driver needs
to stay alert and may need to intervene.
The following are examples of these types of
situations:
Towing A Trailer
ACC while towing a trailer is recommended only
with an Integrated Trailer Brake Controller.
Aftermarket trailer brake controllers will not
activate the trailer brakes when ACC is braking. Offset Driving
ACC may not detect a vehicle in the same lane
that is offset from your direct line of travel, or a
vehicle merging in from a side lane. There may
not be sufficient distance to the vehicle ahead.
The offset vehicle may move in and out of the
line of travel, which can cause your vehicle to
brake or accelerate unexpectedly.

Offset Driving Condition Example

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STARTING AND OPERATING201
COMMON TOWING DEFINITIONS
The following trailer towing related definitions
will assist you in understanding the following
information:
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total allowable weight of your
vehicle. This includes driver, passengers, cargo
and tongue weight. The total load must be
limited so that you do not exceed the GVWR
Úpage 199.
Gross Trailer Weight (GTW)
The GTW is the weight of the trailer plus
the weight of all cargo, consumables and
equipment (permanent or temporary) loaded
in or on the trailer in its "loaded and ready for
operation" condition.
The recommended way to measure GTW is to
put your fully loaded trailer on a vehicle scale.
The entire weight of the trailer must be
supported by the scale.
Gross Combination Weight Rating (GCWR)

The GCWR is the total allowable weight of your
vehicle and trailer when weighed in combination.

Gross Axle Weight Rating (GAWR)

The GAWR is the maximum capacity of the front and
rear axles. Distribute the load over the front and rear
axles evenly. Make sure that you do not exceed
either front or rear GAWR
Ú
page 199.

Tongue Weight (TW)
The TW is the downward force exerted on the
hitch ball by the trailer. You must consider this
as part of the load on your vehicle.
Trailer Frontal Area
The frontal area is the maximum height
multiplied by the maximum width of the front
of a trailer.
Trailer Sway Control (TSC)

The TSC can be a mechanical telescoping link that
can be installed between the hitch receiver and the
trailer tongue that typically provides adjustable
friction associated with the telescoping motion to
dampen any unwanted trailer swaying motions
while traveling.

If equipped, the electronic TSC recognizes a
swaying trailer and automatically applies
individual wheel brakes and/or reduces engine
power to attempt to eliminate the trailer sway.
Weight-Carrying Hitch

A weight-carrying hitch supports the trailer tongue
weight, just as if it were luggage located at a hitch
ball or some other connecting point of the vehicle.
These kinds of hitches are commonly used to tow
small and medium sized trailers.

WARNING!
If the gross trailer weight is 5,000 lbs
(2,267 kg) or more, it is recommended to use
a weight-distributing hitch to ensure stable
handling of your vehicle. If you use a standard
weight-carrying hitch, you could lose control
of your vehicle and cause a collision.
WARNING!
It is important that you do not exceed the
maximum front or rear GAWR. A dangerous
driving condition can result if either rating
is exceeded. You could lose control of the
vehicle and have a collision.
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21_DPF_OM_EN_USC_t.book Page 201

STARTING AND OPERATING203
Recommended Distribution Hitch Adjustment

1. Position the truck to be ready to connect to
the trailer (do not connect the trailer).

2. Measure the height of the top of the front wheel opening on the fender to ground, this
is height H1.

Measuring Height (H)

3. Attach the trailer to the vehicle without the weight distribution bars connected.
4. Measure the height of the top of the front wheel opening on the fender to ground, this
is height H2. 5. Install and adjust the tension in the weight
distributing bars per the manufacturers’
recommendations so that the height of the
front fender is approximately (H2-H1)/
2+H1 (about 1/2 the difference between
H2 and H1 above normal ride height [H1]).
6. Perform a visual inspection of the trailer and weight distributing hitch to confirm
manufacturers’ recommendations have
been met.
NOTE:
For all towing conditions, we recommend towing
with TOW/HAUL mode engaged.Fifth-Wheel Hitch
The fifth-wheel hitch is a special high platform
with a coupling that mounts over the rear axle of
the tow vehicle in the truck bed. It connects a
vehicle and fifth-wheel trailer with a coupling
king pin.
Your truck may be equipped with a fifth wheel
hitch option. Refer to the separately provided
fifth wheel hitch safety, care, assembly, and
operating instructions.
Gooseneck Hitch
The gooseneck hitch employs a pivoted
coupling arm which attaches to a ball mounted
in the bed of a pickup truck. The coupling arm
connects to the hitch mounted over the rear
axle in the truck bed.Measurement Example Example 2500/
3500 Height (mm)
H1 1,030
H2 1,058
H2-H1 28
(H2-H1)/2 14
(H2-H1)/2 + H1 1,044
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MULTIMEDIA239
Key Off Options/Engine Off Options
When the Key Off Options/Engine Off Options button is pressed on the touchscreen, the system displays the options related to vehicle shutoff. These
settings will only activate when the ignition is set to OFF.
Suspension/Air Suspension
When the Suspension/Air Suspension button is pressed on the touchscreen, the system will display settings related to the vehicle’s air suspension.
Setting Name Description
Easy Exit SeatThis setting adjusts the seats to make exiting the vehicle easier.
Key Off/Engine Off Power Delay This setting will keep certain electrical features running after the engine is turned off.
When any door is opened, the electronics will deactivate. The available settings are “0 sec”,
“45 sec”, “5 min”, and “10 min”.
Headlight Off Delay This setting will allow you to set the amount of time the headlights remain on after the vehicle
has been turned off. The “+” will increase the amount of time. The “-” will decrease the
amount of time.
Auto Entry/Exit This setting will automatically lower the vehicle ride height for easier entry and exit of the
vehicle.
Setting Name
Description
Sound Horn With LowerThis setting will sound the horn when the Lower button is pressed on the key fob.
Flash Lights With Lower This setting will flash the lights when the Lower button is pressed on the key fob.
Display Suspension Messages This setting will display suspension messages in the Instrument Cluster Display. The “All”
setting will display all available messages. The “Warnings Only” setting will only display
warning messages.
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240MULTIMEDIA
AUX Switches — If Equipped
When the AUX Switches button is pressed on the touchscreen, the system displays the options related to the four vehicle AUX switches.Aero Mode
This setting will automatically adjust the vehicle ride height depending on the vehicle speed.
Tire Jack Mode This setting will disable the air suspension system to assist in changing a spare tire.
Transport Mode This setting will disable the air suspension system for flat towing.
Wheel Alignment Mode This setting must be activated before performing a wheel alignment. Refer to an authorized
dealer for further information.
Four Corner Air Suspension Modes There are three air suspension modes designed to protect the system in unique situations.
Tire Jack Mode is selected to assist in changing a spare tire. Transport Mode is selected to
assist when the vehicle is being flat bed towed. Wheel Alignment Mode is selected before
performing a wheel alignment. Refer to an authorized dealer for information.
Setting Name
Description
Setting NameDescription
AUX 1-4This setting will adjust the type and power source for the four vehicle AUX switches. There are
two types: “Latching” and “Momentary”. The power source for the AUX switches can either be
set to run off the “Battery” or from the “Ignition”. In addition to setting the type and power
source, you can set if the vehicle will recall the previous state at which the AUX switches were
set. The Recalled Last State setting can be set to “On” or “Off”. Last state conditions are met
only if the type is set to Latching and the power source is set to Ignition.

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