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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 Ú page 211.
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 Úpage 211.
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.
The electronic TSC (If equipped) 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 lb (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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214STARTING AND OPERATING
Weight-Distributing Hitch
A weight-distributing system works by applying
leverage through spring (load) bars. They are
typically used for heavier loads to distribute trailer
tongue weight to the tow vehicle's front axle and
the trailer axle(s). When used in accordance with
the manufacturer's directions, it provides for a
more level ride, offering more consistent steering
and brake control, thereby enhancing towing
safety. The addition of a friction/hydraulic sway
control also dampens sway caused by traffic and
crosswinds and contributes positively to tow
vehicle and trailer stability. Trailer Sway Control
and a weight-distributing (load equalizing) hitch
are recommended for heavier Tongue Weights
(TW) and may be required depending on vehicle
and trailer configuration/loading to comply with
GAWR requirements.
Without Weight-Distributing Hitch (Incorrect)With Weight-Distributing Hitch (Correct)
Improper Adjustment Of Weight-Distributing Hitch (Incorrect)
WARNING!
An improperly adjusted weight-distributing
hitch system may reduce handling, stability
and braking performance and could result in a
collision.
Weight-distributing systems may not be
compatible with surge brake couplers. Consult
with your hitch and trailer manufacturer or a
reputable Recreational Vehicle dealer for
additional information.
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RECOMMENDED DISTRIBUTION HITCH
ADJUSTMENT
Towing With Air Suspension — If Equipped
1. Verify that the vehicle is at the normal ride
height.
NOTE:The vehicle must remain in the engine run position
with all doors closed while attaching a trailer for
proper leveling of the air suspension system.
2. Position the truck to be ready to connect to the trailer (do not connect the trailer).
3. Enable tire jack mode through the instrument cluster or touchscreen radio settings. Tire jack
mode will be canceled and the procedure must
be restarted if the vehicle is driven at speeds
above 5 mph (8 km/h).
4. Measure the height from the top of the front wheel opening on the fender to ground; this is
height H1.
Measuring Height (H)
5. Attach the trailer to the vehicle without the weight-distributing bars connected.
6. Measure the height from the top of the front wheel opening on the fender to the ground;
this is height H2.
7. Install and adjust the tension in the weight-distributing bars per the
manufacturer’s recommendations so that the
height of the front fender is approximately
(H2-H1)/3+H1 (about 1/3 the difference
between H2 and H1 above normal ride height
[H1]). 8. Use the instrument cluster or touchscreen
radio settings and switch off tire jack mode.
Make sure the truck returns to normal ride
height. Perform a visual inspection of the
trailer and weight-distributing hitch to confirm
the manufacturer’s recommendations have
been met.
9. The truck can now be driven.
NOTE:For all towing conditions, we recommend towing
with Tow/Haul mode engaged.
Measurement Example Example Height (mm)
H1
925
H2 946
H2-H1 21
(H2-H1)/3 7
(H2-H1)/3 + H1 932
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216STARTING AND OPERATING
TRAILER HITCH TYPE AND MAXIMUM TRAILER WEIGHT
The following chart provides the maximum trailer weight a given factory equipped trailer hitch type can tow and should be used to assist you in selecting the
correct trailer hitch for your intended towing condition.
All trailer hitches should be professionally installed
on your vehicle. Class III Bumper Hitch Access
Remove the cap with a trim stick or screwdriver to
access the Class III hitch attachment.
NOTE:Be careful not to scratch the bumper step pad.
Class III Bumper Hitch Access
Trailer Hitch Type and Maximum Trailer Weight
Hitch TypeMax. Trailer Weight / Max. Tongue Weight
Class III Bumper Hitch - 1500 Model 5,000 lb (2,267 kg) / 500 lb (226 kg)
Class IV - 1500 Model 12,750 lb (5,783 kg) / 1,275 lb (578 kg)
Refer to the “Trailer Towing Weights (Maximum Trailer Weight Ratings)” for the Maximum Gross Trailer Weight (GTW) towable for your given drivetrain.
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TRAILER TOWING WEIGHTS (MAXIMUM
T
RAILER WEIGHT RATINGS)
NOTE:For trailer towing information (maximum trailer
weight ratings) refer to the following website
addresses:
ramtrucks.com/en/towing_guide/
ramtruck.ca (Canada)
rambodybuilder.com
TRAILER AND TONGUE WEIGHT
Weight Distribution
Consider the following items when computing the
weight on the rear axle of the vehicle:
The tongue weight of the trailer.
The weight of any other type of cargo or equip
-
ment put in or on your vehicle.
The weight of the driver and all passengers.
NOTE:Remember that everything put into or on the trailer
adds to the load on your vehicle. Also, additional
factory-installed options or dealer-installed options
must be considered as part of the total load on
your vehicle. Refer to the Tire And Loading Infor -
mation placard for the maximum combined weight
of occupants and cargo for your vehicle.
TRAILER REVERSE STEERING CONTROL
Feature Overview
Trailer Reverse Steering Control (TRSC) is a feature
that will assist the driver when backing up a trailer.
By turning the knob located on the center stack,
you can more accurately control the direction the
trailer will go.
The driver controls the accelerator and the brake
while steering with the use of the Trailer Reverse
Steering Control knob. The trailer is steered
according to the direction the knob is turned. This feature will also allow the driver to back up a
vehicle and trailer in a straight line when the knob
is rested in its center position.
Minimal setup is required to use this feature.
Set Up:
To use the system, hitch your trailer to the truck
and ensure all electrical wiring is connected
Ú
page 223.
The system will automatically calibrate an
attached trailer during normal forward driving with
no additional action needed from the driver. If the
vehicle has not had enough time to automatically
calibrate after connecting a trailer, you will see a
“Calibrate Trailer” message in the instrument
cluster when pressing the TRSC button to activate
the system. If this is the case, perform the following
maneuver to calibrate the trailer:
Drive forward at least 100 ft (30 m), perform a
90 degree turn and return to a straight position for
at least another 100 ft (30 m). Perform another 90 degree turn, followed by another straight drive
of at least 100 ft (30 m). Check that the system has calibrated by pushing the TRSC button.
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(Continued)
Instrument Cluster Messages:
“Calibrate Trailer ” will display when a trailer
is not calibrated and the vehicle is at a standstill
while the button is pushed.
“Calibrating Trailer” will display when the trailer
is not calibrated and the vehicle is moving while
the button is pushed.
“To Activate Trailer Steering Shift To P” will
display when the trailer is calibrated success
-
fully, the TRSC activation button is pushed and
the vehicle is not in PARK.
“Trailer Steering Ready, Shift To Reverse” will
display when the button is pushed, trailer is cali -
brated and the vehicle is in PARK.
“Trailer Steering Active” will display after the
driver shifts to REVERSE and indicates the
feature is active.
“Trailer Steering Unavailable” will display if
there is a fault in the system preventing activa -
tion, the driver’s door is open, the driver’s seat
belt is unbuckled, or the tailgate is open. Other reasons the feature may cancel:
The driver overrides steering by placing hands
on the steering wheel.
Trailer tracking is lost.
If the trailer angle becomes excessive, the
brakes apply bringing the vehicle to a stop and
then applying the parking brake.
Trailer steering button is pushed while active.
Vehicle speed goes over 8 mph (12 km/h).
Driver door is open and seat belt is unbuckled.
Transmission shifted to PARK.
Trailer Memory
The trailer steering system will automatically retain
the calibration of the previous five trailers
connected, so recalibration will not be necessary
when hooking up. The next time the vehicle is
started, place the vehicle in DRIVE and drive a
short distance. The TRSC system can then be
activated.
NOTE:Trailers may look different during day and night
conditions. In such cases, the trailer may need to
recalibrate. Some trailers (such as boat trailers) will need to
recalibrate while loaded and unloaded.
NOTE:
The system may not detect a trailer in low light
conditions. In sunny conditions, the perfor
-
mance may be degraded as shadows pass over
the trailer.
The driver is always responsible for safe opera -
tion of truck and trailer.
The driver is always in control of the truck as
well as the trailer and is responsible for
controlling the throttle and brakes.
The system may not function when the camera
lens is blocked, blurred (covered with water,
snow, ice, dirt, etc) and will not work unless the
tailgate is upright and fully latched.
TOWING REQUIREMENTS
To promote proper break-in of your new vehicle
drivetrain components, the following guidelines
are recommended.
CAUTION!
Do not tow a trailer at all during the first
500 miles (805 km) the new vehicle is driven.
The engine, axle or other parts could be
damaged.
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220STARTING AND OPERATING
(Continued)
Perform the maintenance listed in the Scheduled
Servicing section for the proper maintenance
intervals
Úpage 393. When towing a trailer, never
exceed the GAWR or GCWR ratings.
Towing Requirements — Tires
Do not attempt to tow a trailer while using a
compact spare tire.
Do not drive more than 50 mph (80 km/h) when
towing while using a full size spare tire.
Proper tire inflation pressures are essential to
the safe and satisfactory operation of your
vehicle.
Check the trailer tires for proper tire inflation
pressures before trailer usage.
Check for signs of tire wear or visible tire
damage before towing a trailer.
Replacing tires with a higher load carrying
capacity will not increase the vehicle's GVWR
and GAWR limits.
For further information Ú page 444.
Towing Requirements — Trailer Brakes
Do not interconnect the hydraulic brake system
or vacuum system of your vehicle with that of
the trailer.
An electronically actuated trailer brake
controller is required when towing a trailer with
electronically actuated brakes. When towing a
trailer equipped with a hydraulic surge actuated
brake system, an electronic brake controller is
not required.
Then, during the first 500 miles (805 km) that
a trailer is towed, do not drive over 50 mph
(80 km/h) and do not make starts at full
throttle. This helps the engine and other parts
of the vehicle wear in at the heavier loads.
WARNING!
Make certain that the load is secured in the
trailer and will not shift during travel. When
trailering cargo that is not fully secured,
dynamic load shifts can occur that may be
difficult for the driver to control. You could lose
control of your vehicle and have a collision.
When hauling cargo or towing a trailer, do not
overload your vehicle or trailer. Overloading
can cause a loss of control, poor performance
or damage to brakes, axle, engine, transmis -
sion, steering, suspension, chassis structure
or tires.
CAUTION!
Safety chains must always be used between
your vehicle and trailer. Always connect the
chains to the hook retainers of the vehicle
hitch. Cross the chains under the trailer
tongue and allow enough slack for turning
corners.
Vehicles with trailers should not be parked on
a grade. When parking, apply the parking
brake on the tow vehicle. Put the tow vehicle
transmission in PARK. For four-wheel drive
vehicles, make sure the transfer case is not in
NEUTRAL. Always, block or "chock" the trailer
wheels.
GCWR must not be exceeded.
Total weight must be distributed between the
tow vehicle and the trailer such that the
following four ratings are not exceeded :
GVWR
GTW
GAWR
Tongue weight rating for the trailer hitch
utilized.
WARNING!
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Trailer brakes are recommended for trailers
over 1,000 lb (453 kg) and required for trailers
in excess of 2,000 lb (907 kg).Integrated Trailer Brake Module (ITBM) —
If Equipped
Your vehicle may have an ITBM for electric and
Electric Over Hydraulic (EOH) trailer brakes.
NOTE:This module has been designed and verified with
electric trailer brakes and new EOH systems.
Some previous EOH systems may not be
compatible with ITBM.
Integrated Trailer Brake Module (ITBM)
The user interface consists of the following:
GAIN Adjustment Buttons (+/-)
Pushing these buttons will adjust the brake control
power output to the trailer brakes in
0.5 increments. The GAIN setting can be increased
to a maximum of 10 or decreased to a minimum of
0 (no trailer braking).
GAIN
The GAIN setting is used to set the trailer brake
control for the specific towing condition and should
be changed as towing conditions change. Changes
to towing conditions include trailer load, vehicle
load, road conditions and weather.
Manual Brake Control Lever
Slide the manual brake control lever to the left to
activate power to the trailer's electric brakes
independent of the tow vehicle's brakes. If the
manual brake control lever is activated while the
brake is also applied, the greater of the two inputs
determines the power sent to the trailer brakes.
The trailer and the vehicle’s stop lamps will come
on when braking normally with the vehicle brake
pedal. Only the trailer stop lamps will come on
when the manual brake control lever is applied.
WARNING!
Do not connect trailer brakes to your vehicle's
hydraulic brake lines. It can overload your
brake system and cause it to fail. You might
not have brakes when you need them and
could have an accident.
Towing any trailer will increase your stopping
distance. When towing, you should allow for
additional space between your vehicle and the
vehicle in front of you. Failure to do so could
result in an accident.
CAUTION!
If the trailer weighs more than 1,000 lb (453 kg)
loaded, it should have its own brakes and they
should be of adequate capacity. Failure to do
this could lead to accelerated brake lining wear,
higher brake pedal effort, and longer stopping
distances.
1 — GAIN (-) Adjustment Button
2 — GAIN (+) Adjustment Button
3 — Manual Brake Control Lever
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