2019 Acura MDX towing

454
Driving
Towing a Trailer
Towing Preparation
Your vehicle can tow a trailer if you carefully observe the load limits, use the proper
equipment, and follow the towing guidelin es. Check the load limits before driving.
■Total trailer weight
Do not exceed the maximum allowable
weight of the trailer, cargo, and everything in
or on it shown in the table.
Towing loads in excess of this can seriously
affect vehicle handling and performance and
can damage the engine and drivetrain.
Each weight limit is calculated based on the following conditions:
• Occupants fill seats from the front of the vehicle to the back
• Each occupant weights 150 lbs (68 kg)
• Each occupant has 17.6 lbs (8 kg) of cargo in the cargo area
Any additional weight, cargo or accessori es reduce the maximum trailer weight and
maximum tongue load.
■Towing Load Limits1 Towing Load Limits
Check if all loads are within limits at a public scale.
If a public scale is not available, add the estimated
weight of your cargo load to the weight of your
trailer (as quoted by the manufacturer), and then
measure the tongue load with an appropriate scale or
tongue gauge or estima te it based on cargo
distribution.
Refer to the trailer owner’s manual for additional
information.
Break-in Period
Avoid towing a trailer duri ng your vehicle’s first 600
miles (1,000 km).
Never exceed the gross weight ratings.
Gross weight information 2 Vehicle Specifications P. 676
3WARNING
Exceeding any load limit or improperly
loading your vehicle and trailer can cause a
crash in which you can be seriously hurt or
killed.
Check the loading of your vehicle and
trailer carefully before starting to drive.
Total Load
Number of
occupantsAWD models with ATF coolerAWD models
without ATF cooler2WD models
25,000 lbs (2,268 kg)3,500 lbs (1,588 kg)3,500 lbs (1,588 kg)
34,750 lbs (2,155 kg)3,250 lbs (1,474 kg)3,250 lbs (1,474 kg)
44,500 lbs (2,041 kg)3,000 lbs (1,361 kg)3,000 lbs (1,361 kg)
54,250 lbs (1,928 kg)2,750 lbs (1,247 kg)2,750 lbs (1,247 kg)
64,000 lbs (1,814 kg)2,500 lbs (1,134 kg)2,500 lbs (1,134 kg)
7Towing not recommended
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■Tongue load
The weight of the tongue with a fully loaded
trailer on the hitch should be approximately:
Boat trailers: 5 – 15% of the total trailer
weight
Other trailers: 10 – 15% of total trailer weight
To n gue LoadTongue Load
Number of
occupantsAWD models with or without ATF cooler2WD models
2500 lbs (227 kg)350 lbs (159 kg)
3475 lbs (215 kg)325 lbs (147 kg)
4380 lbs (172 kg)300 lbs (136 kg)
5290 lbs (132 kg)260 lbs (118 kg)
6165 lbs (75 kg)140 lbs (63 kg)
7Towing not recommended
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■To estimate the tongue load
Excessive tongue load reduces front tire traction and steering control. Too little
tongue load can make the trailer unstable and cause it to sway.
You can estimate the tongue load by meas uring the trailer hitch height from the
ground in the following steps:
1. Park the vehicle on level ground.
2. Measure the distance between the ground and the bottom of the trailer hitch.
3. Connect the fully loaded trailer to the hitch.
4. Measure the distance between the ground and the bottom of the trailer hitch
again.
5. Subtract the second measurement from th e first measurement, then refer to the
following table.
If the difference becomes more than indicated in the table, distribute the load or
remove cargo as needed.
If the difference isAWD models2WD models
1 inches (2.5 cm)150 lbs (68 kg)
1 1/2 inches (3.8 cm)250 lbs (114 kg)
2 inches (5.1 cm)350 lbs (159 kg)
2 3/8 inches (6.0 cm)450 lbs (205 kg)—
2 5/8 inches (6.7 cm)500 lbs (227 kg)—
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■How to weigh the trailer load s using the public scale
Check each weight in the order indicated as shown.
Refer to the table on the right for each we ight’s limit except for the tongue load.
2Tongue load P. 455
•If you cannot weigh the rear axle, subtract 1 from 2.
• The maximum gross combined weight (4) decreases by 2% for every 1,000 feet
(305 meters) of elevation.
• To calculate the tongue load, subtract 5 from 6.
• Refer to the trailer owner’s ma nual for additional information.
1How to weigh the trailer loads using the public scale
Fully load the vehicle and trailer. An attendant who
watches the scale is needed as all occupants should
stay in the vehicle.
If a public scale is not available, add the estimated
weight of your cargo load to the weight of your
trailer (as quoted by the manufacturer), and then
measure the tongue load with an appropriate scale or
tongue gauge or estima te it based on cargo
distribution. Weight limit for 2WD models AWD models
Front gross axle2,811 lbs
(1,275 kg)2,910 lbs
(1,320 kg)
Gross vehicle 5,368 lbs
(2,435 kg) 5,677 lbs
(2,575 kg)
Rear gross axle2,734 lbs
(1,240 kg)2,965 lbs
(1,345 kg)
Gross combined 8,036 lbs
(3,645 kg) 9,833 lbs
(4,460 kg)
1. Front gross axle weight.
2. Gross vehicle weight.4. Gross combined weight.
3. Rear gross axle weight. 5. Hitched trailer weight.
6. Unhitched trailer weight.
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uuTowing a Trailer uTowing Preparation
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Towing generally requires a variety of supplemental equipment.
To ensure the best quality, we recomme nd that you purchase Acura equipment
whenever possible.
■Towing Equipment and Accessories1 Towing Equipment and Accessories
Make sure that all equipment is properly installed and
maintained, and that it meets federal, state, province/
territory, and lo cal regulations.
Consult your trai ler maker for prope r installation and
setup of the equipment.
Improper installation and setup can affect the
handling, stability, and br aking performance of your
vehicle.
Consult your traile r sales or rental agency if any other
items are recommended or required for your towing
situation.
The lighting and wiring of tra ilers can vary by type
and brand. If a connector is required, it should only
be installed by a qua lified technician.
Trailer packages and products:
•Ball mount, hitch plug, hitch pin etc.•Wiring harness kit
•Trailer hitch kit (jum per harness included)
2 Trailer brakes P. 459
Are available at a dealer.
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■Trailer brakes
Recommended for any trailer with a total weight of 1,000 lbs (450 kg) or more:
There are two common types of trailer bra kes: surge and electric. Surge brakes are
common for boat trailers, since the brakes will get wet.
If you choose electric brakes, be sure th ey are electronically actuated. Do not
attempt to attach trailer brakes to your ve hicle’s hydraulic system, as it will lower
braking effectiveness and create a potential hazard.
The 4-pin gray connector installed in your vehicle has all of the circuits required to
install most electric trailer brake controllers.
Have a qualified mechanic install your trailer
brake controller following the trailer brake
controller manufacturer’s instructions. Failure
to properly install the trailer brake controller
may increase the distance it takes for you to
stop your vehicle when towing a trailer.1Trailer brakes
The 4-pin gray connector is located under the left
side instrument panel.
Electric Brake
(Light Green) (20A)
Ground
(Brown) Brake
(Green)
Stop
(Violet)
Trailer brake controller
connector’s terminals:
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uuTowing a Trailer uTowing Preparation
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■Trailer light
Trailer lights and equipment must comply with federal, state, province/territory, and
local regulations. Check with your local trailer sales or rental agency for the
requirements in the area where you plan to tow.
We recommend that you have a dealer instal l a Acura wiring harness and converter.
They are designed for your vehicle.
■Hitches
Read the trailer manufacturer’s instructions , and select the appropriate draw bar for
the height of the trailer you will be towing.
■Weight distribution hitches
Your vehicle is designed to tow without the need for a load distributing hitch. If you
wish to use one, please consult your trailer maker for proper installation and set-up.
Improper set-up could degrade the handling , stability, and braking performance of
your vehicle.
1 Trailer light
The trailer lighting connect or is located behind the
left side panel in the cargo area.
Even if you are planning to use the non-Acura trailer
lighting harness and converte r, ask a dealer for the
correct connector and pins.
+B Trailer Charge
+B Trailer Hazard Light +B Trailer Hazard Light +B Trailer Back Light
Back Light +B ELEC Brake
Right Turn Signal
Stop Light
Pins’ wiring color codes and their purposes:
+B Trailer Small IG2 HAC
Left Turn Signal
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■Safety chains
Always use safety chains when you tow a trailer. Leave enough slack to allow the
trailer to turn corners easily, but do not allow the chains to drag on the ground.
■Sway control
This device can be used if your trailer te nds to sway. Your trailer maker can tell you
what kind of sway control you need and how to install it. Improper installation could
degrade the handling and stability of your vehicle.
■Trailer mirrors
Many states, provinces and territories requir e special exterior mirrors when towing a
trailer. Install special mirrors whenever you cannot clearly see behind you, or if the
trailer creates a blind spot.
■Automatic transmission cooler*
An additional ATF (automatic transmission fluid) cooler is required to keep the
transmission from overheating when towing more than 3,500 lbs (1,588 kg). You
can get the additional ATF cooler at a dealer.
AWD models
* Not available on all models
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