weight INFINITI QX80 2021 Towing Guide
Page 14 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
13
height.  On some tandem axle trailers an incorrect hitch height can result in uneven 
trailer axle loading. 
 
  WARNING- Towing can significantly alter the handling, stability and performance 
characteristics of your vehicle. Moreover, it puts increased strain on the engine and 
drivetrain. Therefore, it is always a good idea to approach towing from the standpoint 
of safety — whether you are purchasing equipment or actually pulling the trailer.  
 
  WARNING- Always make sure your vehicle’s towing capacity is adequate for the 
trailer you intend to tow. Be certain that you have all of the proper equipment needed 
for safe towing, such as safety chains/cables, electric trailer brakes, electric trailer 
brake controller, breakaway switch, and extended rear view mirrors.  Make certain 
your equipment conforms to all federal, state or local regulations to help avoid against 
the possibility of a serious accident and personal injury or death.  
 
You should follow a more frequent maintenance schedule and check fluid levels, 
pressures, tire condition, etc., more often when on the road. Refer to your vehicle 
owner’s manual for details.  It is recommended you visit an INFINITI retailer for service. 
LOADING YOUR TRAILER 
 
  WARNING- Taking the time to load and balance your trailer properly will improve 
overall handling and minimize the strain on your tow vehicle. Incorrectly, loaded trailers 
tend to sway or swing from side to side, upsetting vehicle handling and stability which 
could result in a serious accident, personal injury or death. Careful loading and 
balancing, and a weight distribution hitch and sway-control device can help eliminate 
these problems. 
 
As mentioned earlier, conventional trailer tongue load must fall between 10-15% of the 
total trailer weight, or within the limits of the maximum trailer tongue load specified by 
the trailer manufacturer. 
 
 WARNING- Excessive trailer tongue load can actually push down the tow vehicle in 
back, lifting the front wheels to a point where traction, steering response, and braking 
may be severely reduced. which could result in an accident, personal injury or death. 
Too little trailer tongue load or negative load can lift the trailer tongue upwards on the 
trailer ball causing instability, which may lead to swaying, “tail wagging,” or jackknifing 
which could result in an accident, personal injury or death. 
 
With this in mind, proper loading is extremely 
important. When loading a trailer, 60% of 
the total cargo weight should be positioned 
in the front portion of the trailer and 40% in 
the back. Then the load should be adjusted 
until the proper tongue load ratio is 
achieved. 
 
 
 
 
60%40%
TOWING SAFETY  
Page 15 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
14
 
 WARNING-The trailer load should be 
balanced equally from side-to-side. 
Unequal side-to-side loading can negatively 
affect handling and braking. Once in 
place, all cargo should be firmly secured to 
prevent shifting. If the load should shift 
abruptly during braking or cornering, it 
could adversely affect the handling and 
stability of your vehicle and cause a 
very unsafe situation and may lead to an 
accident or personal injury.  
● DO NOT carry flammable materials, such as  
gasoline, in your trailer. In the event of an  
accident, it may result in an explosion, fire,  
or personal injury or death. 
 
PROVIDING FOR VEHICLE/TRAILER STABILITY 
 
  
WARNING- Improper loading, excessive or insufficient trailer tongue load, 
overloading, excessive trailer weight, poorly designed trailer suspensions, crosswinds, 
and poor maintenance are all things that can affect the stability of your vehicle 
and trailer combination.  Vehicle instability may result in loss of vehicle control and 
cause an accident, personal injury or death. 
 
If swaying occurs, gradually reduce speed, and apply only the trailer brakes to help 
reduce sway.  Steady the steering wheel and gradually  pull over and stop to check 
the cargo load for proper balance and distribution to ensure proper trailer tongue 
load. In addition, check the condition of the suspension and shocks, as well as the tires, 
tire pressures, and wheel bearings on both the tow vehicle and trailer.  
If the swaying continues and your trailer is suitably balanced and within the towing 
capacity limits of your vehicle, discontinue towing and consult your INFINITI retailer or 
trailer manufacturer to determine the problem.  
 
VEHICLE SPEED 
Please note that some states have specific regulations and speed limits for vehicles 
that are towing trailers.  Remember to reduce your speed in unsafe or less-than-ideal 
road conditions or weather. When towing a trailer, braking distances increase while 
handling agility decreases. Always leave yourself an extra margin of distance to 
respond to emergencies. 
 
   
Page 16 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
15
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, and damage caused by such modifications 
may not be covered under your vehicle’s warranty or may possibly 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.  
*When checking or replacement is required, it is recommended you visit an INFINITI retailer for       
service. 
TOWING TIPS/CAUTIONS &  
Page 18 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
17
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 
since 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 
Your vehicle was designed to be used primarily to carry passengers and cargo.  If your 
Infiniti 
vehicle owner’s manual states its allowed for towing, its automatic transmission 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  
Page 19 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
18
increased load on the engine and cooling system, so monitor your coolant 
temperature gauge and automatic transmission fluid temperature gauge (if 
equipped) carefully. At the first sign of overheating, pull to the side of the road. See IF 
YOUR ENGINE OVERHEATS later in this section for more information. 
 
HILLS – DOWNGRADES 
 
 WARNING- While going downhill, the weight of the trailer pushing on the tow vehicle 
may decrease overall stability, and may deteriorate overall handling characteristics.  
The vehicle may handle unpredictably which could cause a loss of vehicle control 
resulting in an accident, property damage, serious injury or death.  Therefore, to 
maintain adequate control, reduce your speed and shift to a lower gear and apply 
the braking in short bursts. If your vehicle is equipped with Tow Mode, see your vehicle 
owner’s manual for information about the use of this function. 
 
  WARNING- Avoid long or repeated use of the brakes when descending a hill, as this 
reduces their effectiveness and could cause overheating which could result in 
damage to your brake components or unable to slow to a safe speed. Shifting to a 
lower gear instead provides “engine braking” and reduces the need to brake as 
frequently. 
HIGH-ALTITUDE PERFORMANCE 
An engine will lose about 4% of its performance for every 1,000 feet above sea level 
that you travel. If you will be towing in high altitudes, it is a good idea to allow more 
time than usual due to the engine’s reduced performance. 
 
While towing a trailer, do not use the following systems (if so equipped): 
— ProPILOT Assist 
— the Lane Departure Warning (LDW) system 
— the Lane Departure Prevention (LDP) system 
— the Blind Spot Warning (BSW) system 
— the Blind Spot Intervention® (BSI) system 
— the Back-up Collision Intervention (BCI) system 
— the Intelligent Cruise Control (ICC) system 
— the Distance Control Assist (DCA) system 
— the Forward Emergency Braking (FEB) with pedestrian detection system 
— the Predictive Forward Collision Warning (PFCW) system. 
 
INTELLIGENT CRUISE CONTROL 
 
  WARNING- In order to maintain a safe distance to the vehicle ahead to avoid the 
possibility of accidents, property damage, serious injury or death.  INFINITI recommends 
not to use the Intelligent Cruise control (ICC) system while towing a trailer or other 
vehicle.   In certain road conditions when your vehicle is towing, the ICC sensor may 
not detect a vehicle ahead.  If the ICC sensor cannot detect the reflector on the 
vehicle ahead, the ICC system may not maintain the selected distance which could 
cause an accident, property damage, or death.  
Page 21 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
20
5.  As soon as the engine has cooled to its normal operating temperature, visually 
inspect the drive belts for damage or looseness. A loose belt reduces water 
pump efficiency.  
 
  
  WARNING- Be careful to keep your hands, hair, jewelry, and clothing clear of the 
running drive belt and other moving parts when inspecting the engine and radiator. 
Also check to see if the cooling fan is running, and inspect the water pump, radiator, 
and radiator hoses for leaks. Keep in mind, too, that if your vehicle is equipped with  
  an electric fan motor, it may start without warning any time the coolant temperature 
is high. If you find leaking coolant, a loose or missing drive belt, or an inoperable fan, 
turn off the engine immediately. 
 
6.  If no leaks are apparent and all other components appear to be operating 
properly with the engine cooled to its normal operating temperature; check the 
coolant level in the reservoir tank with the engine running. Add coolant to the 
reservoir tank if needed. At this point, if repairs are required, go to the nearest 
INFINITI retailer. See the IN CASE OF EMERGENCY section of your vehicle owner’s 
manual for additional information on overheating. 
 
NOTE – All INFINITI vehicles have an engine protection mode which helps reduce the 
chance of engine damage if the engine coolant reaches a specified temperature.  
 
NOTES 
 
 
 
 
 
 
 
 
 
 
 
 
 
Passenger Vehicles – INFINITI cautions that you do not tow a trailer with the Q50, or Q60 
vehicles. 
 
 
1.   Maximum Trailer Weight values are calculated assuming a base 
vehicle with driver and any options required, to achieve the 
rating.  Additional passengers, cargo and/or optional equipment 
will add weight to the vehicle and reduce your vehicle’s 
maximum towing capacity and trailer tongue load. 
 
2.   In general, a weight-distributing hitch system (Class IV) should be 
used when towing over 5,000 lbs. 
 
3.   Most states require a separate braking system on trailers with a 
loaded weight above a specific amount. Check local ordinances.  
7-pin connector trailer wire harnesses are required for use with 
trailer brakes (available separately).  
Page 22 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
21 Other Recommendations and Information – Towing performance and speed are 
affected by vehicle payload, tow weight, road grades, and weather conditions, 
including high temperatures. See your vehicle owner’s manual for details. 
 
TOWING GLOSSARY  
 
  
BALL MOUNT A bar that holds the hitch ball and is inserted into the hitch receiver.  
BREAKAWAY SWITCH A safety device using a trailer battery that automatically applies the trailer’s 
brakes if it should accidentally become separated from the tow vehicle.  
A breakaway switch may be used with both electric or surge trailer brake 
systems. 
  BUMPER HITCH A reinforced bumper designed to accommodate a hitch ball. 
  ELECTRIC TRAILER  
BRAKES When the brakes on a tow vehicle are applied, an electric current is sent to 
an actuator which applies the trailer’s brakes. 
  ELECTRIC TRAILER  
BRAKE CONTROLLER A device that controls the electric trailer brakes. 
  GROSS AXLE  
WEIGHT RATING 
(GAWR) The maximum amount of weight each vehicle axle (front and rear) is 
designed to safely carry.     
   GROSS COMBINED  
WEIGHT RATING 
(GCWR) The maximum allowable combined weight of the vehicle and trailer, 
including passengers and all cargo. 
   GROSS VEHICLE 
WEIGHT RATING 
(GVWR) The maximum allowable weight of the vehicle, including passengers, cargo, 
fuel, hitch, trailer tongue load, and any optional equipment. 
   HITCH BALL 
 A ball that connects the trailer to the tow vehicle hitch that provides the 
means by which the trailer pivots during cornering.  Available in a number of 
sizes and weight capacities, it must correspond to the trailer coupler size, and 
have a sufficient capacity rating for the trailer being pulled. 
   RECEIVER HITCH A frame- or structure-mounted hitch with a receiver that allows removal of the 
ball mount. 
   SAFETY CHAINS/CABLES Provides an emergency connection between the tow vehicle and the trailer, 
should the trailer become disengaged for any reason. 
   SURGE BRAKES 
 Hydraulic-type braking system activated by inertia. As the tow vehicle begins 
to brake, the trailer pushes against the hitch ball, consequently activating the 
trailer brakes.   
   TRAILER 
TONGUE/COUPLER The part of the trailer that extends forward to meet the tow vehicle, and 
carries the coupler assembly.
     
Page 23 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
22
	
 
 
At INFINITI, we back everything we build. So we are proud that every INFINITI is 
protected by some of the best New Vehicle Limited Warranties, including  
4-year/60,000-mile (whichever comes first) Basic coverage. All 2021 models also  
feature 6-years/70,000-mile (whichever comes first) Powertrain coverage.*  
 
For additional peace of mind, the Elite INFINITI Extended Protection Plan provides you 
with quality long-term mechanical protection for 8 years/120,000 miles (measured from 
in service date and zero miles, whichever comes first)”— long past your vehicle’s Basic 
and Powertrain Limited Warranty. With the extra coverage, if a covered component 
fails during the term of the plan, INFINITI pays… not you.** Plus, the Elite INFINITI 
Extended Protection Plan includes extensive Roadside Assistance benefits and car 
rental coverage. 
 
All of this makes the Elite INFINITI Extended Protection Plan a truly comprehensive 
package, offering INFINITI owners exceptional value and peace of mind.
  Coverage is 
available throughout the United States. Repair work will be done at authorized INFINITI 
retailers by INFINITI-trained technicians utilizing Genuine INFINITI Parts. 
 
For more information about the Elite INFINITI Extended Protection Plan, contact your 
participating INFINITI retailer or call 1-800-662-6200. 
  
The quality of Genuine INFINITI Parts and Accessories is backed by the integrity of a 
Genuine INFINITI Replacement Parts and Accessories Limited Warranty. If purchased 
within the Basic coverage period of 4 years/60,000 miles (whichever comes first), 
Genuine INFINITI Parts and Accessories are covered by the remaining period of the 
warranty. If the remaining period is less than 12 months/12,000 miles (or if the vehicle 
warranty has expired), then Genuine INFINITI Parts and Accessories except for 
replacement audio components are covered by their own 12-month/12,000-mile from 
the date of installation or purchase (whichever comes first). See your INFINITI Warranty 
Information Booklet or ask your INFINITI retailer for specific details.  
 
CONCERN FOR YOUR SAFETY 
INFINITI urges you to always use your seat belt whenever you drive. And please make 
sure all passengers are buckled up. Keep in mind that air bags are a supplemental 
restraint system and must always be used in conjunction with a seat belt.  
 
TRAILER TONGUE 
LOAD The amount of trailer weight pressing down on the hitch. 
   WEIGHT-DISTRIBUTING 
HITCH SYSTEM Type of hitch system that helps shift the trailer tongue weight to all trailer tires 
and the tow vehicle front tires. Strongly recommended when towing trailers 
with a Maximum Trailer Weight greater than 5,000 lbs.   
   WIRING HARNESS 
 Provides an electrical connection linking the tow vehicle’s electrical system to 
the trailer’s system. 
   
PROTECTION