check engine INFINITI QX80 2020 Towing Guide
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in different configurations to adjust the tongue load and load tr ansfer and hitch ball 
he ight .  On some tandem axle trailers an incorrect hitch height can result in uneven 
trailer  axle loading.  
 
  WARNING- Towing can significantly  alter the handling 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 a re 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 ensure 
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. See your vehicle owner’s 
manual for details.  
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  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 o f 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 caus ing instability,  which may lead to  swaying, “tail wagging ,”  or jackknif ing 
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.  
 
 
 
 
 
TOWING SAFETY  
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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 m ost areas, passengers could be seriously injured  during 
sudden t railer 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/un ibody,  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 ca use 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 on e 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 tr ailer-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 traile r. 
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 poten tial 
problem while in your driveway is better than discovering it miles from home.   
If you ha ve never towed a trailer before, be aware that it does take getting used to.   
 
 
 
TOWING TIPS/CAUTIONS & 
 
  
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IF YOUR ENGINE OVERHEATS 
A moderate increase in engine operating temperature is normal when towing a trailer. 
If, however, the coolant temperature gauge reading is abnormally high, or if you are 
experiencing a significant loss of power, or if you hea r unusual engine noises,* the 
engine may be overheating and you should immediately take the following steps:  
 
1. Pull your vehicle safely over to the side of the road, out of t raffic. Apply the 
parking brake  and move the gearshift lever to NEUTRAL (manual)  or PARK 
(automatic). DO NOT STOP THE ENGINE.  
 
2.  Turn off the air conditioning and, after opening all the windows, turn the heater      
on to maximum hot and the fan to its highest speed , and exit the vehicle. The 
heater core in your vehicle is just like  a miniature engine radiator and will provide 
an extra cooling surface to help reduce engine temperature.  
  
*See your vehicle  owner’s manual for additional indications that your vehicle may be 
overheating.  
 
3. If the temperature does not d rop or continues to increase, stop t he engine 
immediately.  
 
4. Being cautious of traffic, step out of the vehicle and, from a safe distance, look 
for steam underneath the engine. If you see steam or leaking coolant, sta nd 
clear to avoid being burned and s hut off your engine immediately and allow it to 
cool. If there is no steam, open the hood.   
 
 WARNING  - Never remove the radiator cap when the radiator is hot. If the cap is 
removed under these conditions, pressurized hot wate r/coolant may spurt out,   
possibly causing seriou s injury.  
 
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 h ands, 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 m ind, 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 immediate ly. 
  
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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 i f 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 vehicle s have an engine protection mo de 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 Q50,  Q60,  Q70 , 
vehicle s. 
 
Cross- Over Vehic les – INFINITI cautions  that you do not tow a trailer QX30, QX50, or the 
QX70 2WD vehicles.   
 
Other Recommendations and Information –  Towing performance and speed are 
affected by vehicle payload, tow weight, road grades, and weather conditions, 
including h igh 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.  
          BRE AK AWAY  SWI TCH  A safety device using a trailer  battery  that automatically applies  the trailer’s 
brakes if it should accidentally become separated from the tow vehicle.  
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).