trailer DODGE DURANGO 2021 Owner's Manual

144STARTING AND OPERATING
RECOMMENDED DISTRIBUTION HITCH
ADJUSTMENT

1. Measure the height from the top of the front
wheel opening on the fender to ground; this is
height H1.

Measuring Height (H)
2. Attach the trailer to the vehicle without the
weight distribution bars connected.
3. Measure the height from the top of the front wheel opening on the fender to ground; this is
height H2.
4. 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]). 5. The vehicle can now be driven.
NOTE:For all towing conditions, we recommend towing
with tow haul mode engaged (if equipped).
Measurement
Example Example Height (mm)
H1
925
H2 946
H2-H1 21
(H2-H1)/2 10.5
(H2-H1)/2 + H1 935.5

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STARTING AND OPERATING145
TRAILER HITCH CLASSIFICATION
The following chart provides the industry standard for the maximum trailer weight a given trailer hitch class can tow and should be used to assist you in selecting
the correct trailer hitch for your intended towing condition.
TRAILER TOWING WEIGHTS (MAXIMUM TRAILER WEIGHT RATINGS)
Trailer Hitch Classification Definitions
Class Max. Trailer Hitch Industry Standards
Class I - Light Duty 2,000 lb (907 kg)
Class II - Medium Duty 3,500 lb (1,588 kg)
Class III - Heavy Duty 6,000 lb (2,721 kg)
Class IV - Extra Heavy Duty 10,000 lb (4,535 kg)
For the Maximum Gross Trailer Weight (GTW) towable for your given drivetrain see Ú page 145.
All trailer hitches should be professionally installed on your vehicle.
Engine GCWRFrontal Area Maximum GTW Maximum Trailer TW (See Note)
3.6L - RWD Light Duty Cooling 8,900 lb (4,037 kg) 40 sq ft (3.72 sq m) 3,500 lb (1,588 kg) 350 lb (159 kg)
3.6L - RWD 11,600 lb (5,262 kg) 40 sq ft (3.72 sq m) 6,200 lb (2,812 kg) 620 lb (281 kg)
3.6L - AWD Light Duty Cooling 8,900 lb (4,037 kg) 40 sq ft (3.72 sq m) 3,500 lb (1,588 kg) 350 lb (159 kg)
3.6L - AWD 11,600 lb (5,262 kg) 40 sq ft (3.72 sq m) 6,200 lb (2,812 kg) 620 lb (281 kg)
5.7L - RWD 13,100 lb (5,942 kg) 60 sq ft (5.57 sq m) 7,400 lb (3,357 kg) 740 lb (336 kg)
5.7L - AWD 13,100 lb (5,942 kg) 60 sq ft (5.57 sq m) 7,200 lb (3,266 kg) 720 lb (327 kg)
5.7L - AWD R/T Tow N Go 14,600 lb (6,622 kg) 60 sq ft (5.57 sq m) 8,700 lb (3,946 kg) 870 lb (395 kg)
Refer to local laws for maximum trailer towing speeds.
4

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146STARTING AND OPERATING
NOTE:The trailer tongue weight must be considered as
part of the combined weight of occupants and
cargo, and should never exceed the weight refer -
enced on the Tire and Loading Information placard
Ú page 295. The addition of passengers and cargo
may require reducing trailer tongue load and Gross
Trailer Weight (GTW).
TRAILER HITCH RECEIVER COVER
R
EMOVAL — IF EQUIPPED
Your vehicle may be equipped with a trailer hitch
receiver cover, this must be removed to access the
trailer hitch receiver (if equipped). This cover is
located at the bottom center of the rear fascia/
bumper.

1. Turn the two locking retainers located at the
bottom of the hitch receiver cover a quarter
turn counterclockwise and pull bottom of the
hitch receiver cover outward (towards you).
Hitch Receiver Cover

2. Pull the bottom of the cover outward (towards you) then downwards to disengage the tabs
located at the top of the hitch receiver cover to
remove.
Hitch Receiver Cover

To reinstall the cover after towing, repeat the
procedure in reverse order.
NOTE:Be sure to engage all tabs of the hitch receiver
cover in the bumper fascia prior to installation.
1 — Hitch Receiver Cover
2 — Locking Retainers

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STARTING AND OPERATING147
(Continued)
(Continued)
TRAILER AND TONGUE WEIGHT
Never exceed the maximum tongue weight
stamped on your bumper or trailer hitch.

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
Ú page 300.
TOWING REQUIREMENTS
To promote proper break-in of the new vehicle
drivetrain components, the following guidelines
are recommended. Perform the maintenance listed in Scheduled
Servicing Ú
page 264. When towing a trailer,
never exceed the GAWR or GCWR ratings.
CAUTION!
Always load a trailer with 60% of the weight in
the front of the trailer. This places 10% of the
GTW on the tow hitch of your vehicle. Loads
balanced over the wheels or heavier in the rear
can cause the trailer to sway severely side to
side which will cause loss of control of the
vehicle and trailer. Failure to load trailers heavier
in front is the cause of many trailer collisions.
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.
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!
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148STARTING AND OPERATING
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 Úpage 295.
Towing Requirements — Trailer Brakes
Do not interconnect the hydraulic brake system
or vacuum system of your vehicle with that of
the trailer. This could cause inadequate braking
and possible personal injury.
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.
Trailer brakes are recommended for trailers
over 1,000 lb (453 kg) and required for trailers
in excess of 2,000 lb (907 kg).
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 (P). For four-wheel drive
vehicles, make sure the transfer case is not in
NEUTRAL (N). 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!
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.

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STARTING AND OPERATING149
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 EOH systems. Some
previous EOH systems may not be compatible
with ITBM.

Integrated Trailer Brake Module (ITBM)
The user interface consists of the following:
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 brake lamps will come
on when either vehicle braking or manual trailer
brakes are applied.
Trailer Brake Status Indicator Light
This light indicates the trailer electrical connection
status.
If no electrical connection is detected after the
ignition is turned on, pushing the GAIN adjustment
button or sliding the manual brake control lever
will display the GAIN setting for 10 seconds and the
“Trailer Brake Status Indicator Light” will not be
displayed.
If a fault is detected in the trailer wiring or the
Integrated Trailer Brake Module (ITBM), the
“Trailer Brake Status Indicator Light” will flash. 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.
Adjusting GAIN
NOTE:This should only be performed in a traffic free envi
-
ronment at speeds of approximately 20–25 mph
(30–40 km/h).

1. Make sure the trailer brakes are in good working condition, functioning normally and
properly adjusted. See a trailer dealer if
necessary.

2. Hook up the trailer and make the electrical connections according to the trailer
manufacturer's instructions.
1 — GAIN Adjustment Button
2 — GAIN Adjustment Button
3 — Manual Brake Control Lever
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150STARTING AND OPERATING
3. When a trailer with electric/EOH brakes is plugged in, the trailer connected message
should appear in the instrument cluster
display (if the connection is not recognized by
the ITBM, braking functions will not be
available), the GAIN setting will illuminate and
the correct type of trailer must be selected
from the instrument cluster display options.
4. Push the UP or DOWN button on the steering wheel until “TRAILER TOW” appears on the
screen.
5. Push the RIGHT arrow on the steering wheel to enter “TRAILER TOW”.
6. Push the UP or DOWN buttons until the Trailer Brake Type appears on the screen.
7. Push the RIGHT arrow and then push the UP or DOWN buttons until the proper Trailer Brake
Type appears on the screen.
8. In a traffic-free environment, tow the trailer on a dry, level surface at a speed of 20–25 mph
(30–40 km/h) and squeeze the manual brake
control lever completely. 9. If the trailer wheels lockup (indicated by
squealing tires), reduce the GAIN setting; if the
trailer wheels turn freely, increase the GAIN
setting.
Repeat steps 8 and 9 until the GAIN setting is at a
point just below trailer wheel lockup. If towing a
heavier trailer, trailer wheel lockup may not be
attainable even with the maximum GAIN setting
of 10.
Display Messages
The trailer brake control interacts with the
instrument cluster display. Display messages,
along with a single chime, will be displayed when a
malfunction is determined in the trailer
connection, trailer brake control, or on the trailer
Ú page 83.
NOTE:
An aftermarket controller may be available for
use with trailers with air or EOH trailer brake
systems. To determine the type of brakes on
your trailer and the availability of controllers,
check with your trailer manufacturer or dealer.
Removal of the ITBM will cause errors and it
may cause damage to the electrical system and
electronic modules of the vehicle. See an autho -
rized dealer if an aftermarket module is to be
installed.
WARNING!
Connecting a trailer that is not compatible with
the ITBM system may result in reduced or
complete loss of trailer braking. There may be an
increase in stopping distance or trailer instability
which could result in personal injury.
CAUTION!
Connecting a trailer that is not compatible with
the ITBM system may result in reduced or
complete loss of trailer braking. There may be an
increase in stopping distance or trailer instability
which could result in damage to your vehicle,
trailer, or other property.

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STARTING AND OPERATING151
Towing Requirements — Trailer Lights And
Wiring
Whenever pulling a trailer, regardless of the trailer
size, stop lights and turn signals on the trailer are
required for motoring safety.
The Trailer Tow Package may include a four- and
seven-pin wiring harness. Use a factory approved
trailer harness and connector.
NOTE:Do not cut or splice wiring into the vehicle’s wiring
harness.
The electrical connections are all complete to the
vehicle but you must mate the harness to a trailer
connector. Refer to the following illustrations.
NOTE:
Disconnect trailer wiring connector from the
vehicle before launching a boat (or any other
device plugged into vehicle’s electrical connect)
into water.
Be sure to reconnect once clear from water
area.
Four-Pin Connector
Seven-Pin Connector

1 — Ground
2 — Park
3 — Left Stop/Turn
4 — Right Stop/Turn
1 — Battery
2 — Backup Lamps
3 — Right Stop/Turn
4 — Electric Brakes
5 — Ground
6 — Left Stop/Turn
7 — Running Lamps
4

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152STARTING AND OPERATING
TOWING TIPS
Before towing, practice turning, stopping, and
backing up the trailer in an area located away from
heavy traffic.
Automatic Transmission
Select the DRIVE (D) range when towing. The
transmission controls include a drive strategy to
avoid frequent shifting when towing. However, if
frequent shifting does occur while in DRIVE, you
can use the AutoStick shift control to manually
select a lower gear.
If equipped with Tow N Go, it is recommended
to place the vehicle in tow mode by pushing the
TOW button.
NOTE:Using a lower gear while operating the vehicle
under heavy loading conditions, will improve
performance and extend transmission life by
reducing excessive shifting and heat buildup.
This action will also provide better engine braking.
AutoStick
When using the AutoStick shift control, select
the highest gear that allows for adequate perfor -
mance and avoids frequent downshifts. For
example, choose “5” if the desired speed can be
maintained. Choose “4” or “3” if needed to
maintain the desired speed.
To prevent excess heat generation, avoid
continuous driving at high RPM. Reduce vehicle
speed as necessary to avoid extended driving at
high RPM. Return to a higher gear or vehicle
speed when grade and road conditions allow.
Cruise Control — If Equipped
Do not use on hilly terrain or with heavy loads.
When using the Cruise Control, if you experience
speed drops greater than 10 mph (16 km/h),
disengage until you can get back to cruising
speed.
Use Cruise Control in flat terrain and with light
loads to maximize fuel efficiency.

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STARTING AND OPERATING153
RECREATIONAL TOWING (BEHIND MOTORHOME)
TOWING THIS VEHICLE BEHIND ANOTHER VEHICLE
NOTE:
When towing your vehicle, always follow appli -
cable state and provincial laws. Contact state
and provincial Highway Safety offices for addi -
tional details.
A flat tow electric power steering enable kit is
available for increased flat tow performance,
contact an authorized dealer for further details.
RECREATIONAL TOWING —
R
EAR-WHEEL DRIVE MODELS
DO NOT flat tow this vehicle. Damage to the
drivetrain will result.
Recreational towing (for two-wheel drive models) is
allowed ONLY if the rear wheels are OFF the
ground. This may be accomplished using a tow
dolly or vehicle trailer. If using a tow dolly, follow
this procedure:
1. Properly secure the dolly to the tow vehicle,
following the dolly manufacturer's
instructions.

2. Drive the rear wheels onto the tow dolly.
3. Firmly apply the parking brake. Shift the transmission into PARK.
4. Turn the ignition OFF.
5. Properly secure the rear wheels to the dolly, following the dolly manufacturer’s
instructions.
Towing Condition Wheels OFF The
Ground Rear-Wheel
Drive Models All-Wheel Drive Models With Single-Speed
Transfer Case All-Wheel Drive Models With Two-Speed
Transfer Case
Flat Tow NONENOT ALLOWED NOT ALLOWED
See Instructions:
Transmission In PARK
Transfer Case In N (Neutral)
Tow In Forward Direction
Dolly Tow Front
NOT ALLOWED NOT ALLOWED NOT ALLOWED
Rear OK NOT ALLOWED NOT ALLOWED
On Trailer ALLOK OK OK4

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