lock INFINITI QX80 2017 Towing Guide
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TRAILER TONGUE 
The tongue is the part of the trailer that extends forward to meet the tow vehicle, and it also carries 
the coupler assembly. Knowledge of the trailer minimum  and maximum  tongue load is critical as it 
can have a significant effect on the handling and capacity of the tow vehicle. Refer to your vehicle 
owner’s manual to view the maximum conventional trailer tongue load listed for your vehicle. Trailer 
tongue weight is the amount of downward pressure exerted onto the hitch ball. Keep the tongue 
load between 10-15% of the total trailer weight.  DO NOT exceed the maximum tongue load 
specification.  If the tongue weight is below the recommended amount, you must move some of the 
load forward or add weight to the front frame of the trailer. 
  
SAFETY CHAINS/CABLES 
Always use suitable safety chains/cables between the tow vehicle and the trailer. If the hitch 
should break or become disengaged for some reason, these chains/cables will provide an 
emergency connection between the vehicle and the trailer.  The ultimate combined breaking 
strength of the two chains must be equal to the gross weight of the towed vehicle(s). 
 
The chains/cables should be crossed under the trailer tongue and attached to the hitch or vehicle 
frame. Crossing the chains/cables under the tongue will help prevent the tongue from hitting the 
ground should the trailer become disconnected.  
Be sure to leave enough slack in the chains/cables to turn corners without binding; however, note 
that excessive slack will allow the chains/cables to drag on the ground.  
 
 WARNING- Do not use S-hooks for attaching the safety chains as they may become un-hooked 
while towing.  If the S-hook unhooks, the emergency chains/cables will become detached,  so if the 
tow hitch breaks or becomes disengaged, it will allow the trailer to completely break away causing 
property damage and possibly personal injury or death. The use of S-hooks is illegal in many states. 
 
 CAUTION- To avoid damage to the bumper and chains/cables when making a sharp turn, do not 
attach the chains/cables too close to the coupler.  Consult your trailer manufacturer for the proper 
location of the chain/cable attachment to the trailer. 
 
REAR VIEW MIRRORS 
 
 WARNING- In many cases, a trailer can block your rear vision when you are using only the 
standard INFINITI rear view and outside mirrors. Be careful when changing lanes or turning.  Using 
only these mirrors could cause an accident as they were not designed for towing. 
 
 “Extended” mirrors specifically designed for trailer towing should be used when your rearward 
vision is obstructed. Before using these mirrors, make certain that they comply with state and local 
regulations. Telescoping Tow Mirrors are available as an accessory for certain INFINITI vehicles. 
Contact your INFINITI retailer for details. 
 
SWAY CONTROL DEVICE 
Sudden maneuvers, wind gusts, and buffeting caused by other vehicles can affect trailer handling.  
Sway control devices may help control the pivoting motion between tow vehicle and trailer and 
make trailer towing easier on the driver. If you choose to use one, contact a reputable trailer hitch 
supplier to make sure the sway control device will work with the vehicle, hitch, trailer and the 
trailer’s brake system.                                                                                                                                              
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A sway control device is recommended for all towing above 2,000 lb (907 kg).   Too low a 
percentage of tongue weight can also cause sway.   Follow the instructions provided by the 
manufacturer for installing and using the sway control device. 
 
BREAKAWAY SWITCH 
On a trailer with electric brakes, a breakaway switch can automatically activate the trailer brake 
system if the trailer becomes separated from the tow vehicle. Should the trailer become detached, 
a breakaway switch may help prevent the trailer from wandering into another lane.  
 
WARNING-A breakaway switch relies on the power of a trailer battery, so make sure it is not  
discharged. Never use the breakaway switch to “park” the trailer on a grade. The battery would 
eventually discharge and release the brake, allowing the trailer to roll.
  Be sure to leave enough 
slack in the tether on the breakaway switch to turn corners without binding.  If you do not, the 
electric trailer brakes will lock-up and not release. See your trailer manufacturer for proper 
installation of a breakaway switch that is compatible with your trailer braking system. 
 
TRAILER LIGHTS 
Trailer lights should comply with all applicable federal, state, and local regulations, and should be 
in proper working order at all times. If your vehicle is equipped with a towing package, a 7-pin 
trailer harness connector is located at the trailer hitch, under a cover on the rear bumper on some 
models for connecting trailer lights.  For trailers that use a different style plug, contact your INFINITI 
retailer or a professional supplier of towing equipment for adaptors to the 7-pin trailer harness. 
 
A trailer’s taillights, stoplights, and turn signal lights must be wired into the towing vehicle’s 
electrical system.*  Most trailers operate on a four-wire system in which the stoplights and turn 
signal lights utilize the same wire. Most all INFINITI vehicles have separate wires for the stoplights 
and turn signal lights, therefore a device called a “converter” is needed.** Specifically, a “powered 
converter” must be used, as a converter of this type creates only minimal additional electrical 
demand (draw) on the vehicle lighting circuits, which helps to ensure protection for the vehicle’s 
sensitive electronics.* Always check for correct operation of the taillights, stoplights, and turn 
signal lights every time you connect a trailer for towing. Never replace vehicle fuses with fuses of a 
higher amperage rating than the original. 
 
*Vehicles equipped with LED taillights require that wiring be connected at a specific location. For assistance in  
 
 hooking up trailer lights, contact your INFINITI retailer or a professional supplier of towing equipment. 
**QX80 and QX60 vehicles are pre-wired for trailer lighting and do not require a converter. 
  
 CAUTION – Improperly installed or poor quality trailer harness wiring may adversely affect your 
vehicle’s electrical system. Use only an INFINITI approved wiring harness, or consult your retailer  
or a professional supplier of towing equipment for compatible equipment.  
 
  
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PASSENGERS 
 
 WARNING- Never allow passengers to ride inside a trailer while it is being towed.  Not only is this 
unlawful in most areas, passengers could be seriously injured during sudden trailer movement or in 
an accident. In addition, trailers may allow fumes from the tow vehicle to leak inside. This could 
result in carbon monoxide poisoning from the engine exhaust. 
 
VEHICLE MODIFICATIONS 
 
 WARNING - DO NOT modify your vehicle beyond those required for proper hitch installation, 
wiring hook-up, or adding extended mirrors on any INFINITI vehicle being used for towing purposes. 
Changes to the drivetrain, suspension, exhaust systems, electrical, frame structure/unibody, or 
other vehicle components are not necessary for towing within the limits described in this guide. 
These changes may diminish the reliability and longevity of your vehicle, void warranty coverage or 
possible result in loss of vehicle control and cause an accident, personal injury or death. 
 
 
TOOL KIT 
When towing, bring tools including flares, a flashlight, emergency reflectors, jumper cables, extra 
fuses, extra radiator coolant, oil, and easily replaced spare parts such as taillight bulbs. You should 
also carry spare tires for your tow vehicle and trailer, as well as a jack suitable for use on the trailer. 
Choose a jack that can raise and lower the trailer so that you can connect the coupler to and 
disconnect it from the ball of your hitch. Choose one with a weight capacity that matches or 
surpasses your trailer tongue weight. 
 
 
 WARNING- Be aware that your automotive jack is designed for lifting only your vehicle during a 
tire change. Using an automobile jack to lift a trailer-bearing load may be unstable possibly causing 
it to fall off the jack stand which may result in property damage or serious injury or death. 
 
BEFORE STARTING OUT 
Before starting out on a trip, make one last inspection of the tow vehicle and the trailer. Are the tire 
pressures correct? Are the safety chains/cables securely in place? Is the cargo tied down securely? 
Do all the lights work? Is the coupler properly attached over the hitch ball and secured using a 
locking pin? Is the breakaway switch hooked up and functioning properly? Are vehicle and electric 
trailer brakes working properly?  
 
Make a checklist of key items to inspect. When towing, vehicle engine oil, transmission oil, and 
coolant should always be checked before starting out. Finding a potential problem while in your 
driveway is better than discovering it miles from home.  
If you have never towed a trailer before, be aware that it does take getting used to. To begin with,  
TOWING TIPS/CAUTIONS & WARNINGS  
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Of course, backing up should be done only at very slow speeds. For large trailers that obstruct your 
rearward vision, have someone outside the vehicle act as a “spotter” to guide you along.   
 WARNING- Do not use or rely upon the Back-up Collision Intervention system (BCI) when towing 
a trailer.  The BCI system cannot function properly when objects are obstructing the radar sensor 
beams.   
 
PARK SMART 
A tow vehicle and trailer can be an unwieldy combination in a small area, so always try to park 
where you will have a relatively easy time maneuvering. Once parked, always block the wheels on 
both the tow vehicle and the trailer.   
 
Parking on a slope is not recommended. If, however, you must park on a slope and your vehicle is 
equipped with an automatic transmission, there are some precautions you should take:  
 Turn the wheels of the tow vehicle towards the side of the road away from the center of the road, 
and apply the parking brake and only then move the gear lever into PARK.   
 Next, block/chock the wheels once the tow vehicle and trailer are in position and are being held 
by the vehicle’s brake.  
 CAUTION-If you move the lever into PARK before blocking the wheels and applying the parking 
brake, it may be difficult to later shift out of PARK. Transmission damage may also occur. 
 
PASS CAREFULLY 
As mentioned in the introduction to this section, because of the added weight of the trailer, 
acceleration capability is reduced and you will require a longer distance to pass another vehicle. Be 
certain you have sufficient time and space to pass safely.  
 WARNING- Never attempt to pass on hills or when going around curves.  Doing so could cause a 
loss of vehicle control and result in accident, property damage or personal injury. Because the 
trailer does not follow the exact path as the tow vehicle on turns, safely passing and cornering 
while towing takes considerably more distance and turning space than normal. Be certain you  
have sufficient time and space to pass safely, remember, the length of the trailer must also pass 
the other vehicle before you can safely change lanes.  
 
HILLS – UPGRADES 
If your vehicle is equipped with an automatic transmission, it is designed to select automatically 
the correct gear for the best towing comfort and performance as the incline increases. To maintain 
speed or avoid up and down shifts, manually shift to a lower gear as needed.  
 
The added weight of a trailer places an increased load on the engine and cooling system, so 
monitor your coolant temperature gauge and automatic transmission fluid temperature gauge (if  
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COMMITMENT  
To a superior product representing excellent value, presented in a unique environment. To honor 
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*Roadside Assistance/Trip Interruption available during the first four years after initial new vehicle delivery. 
**Subject to availability. Available only during the 4-year/60,000-mile Basic coverage. The customer must be  
   
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THE TOTAL OWNERSHIP EXPERIENCE INFINITIUSA.com