fuel cap INFINITI QX80 2021 Towing Guide
Page 20 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
19
 
 
BLIND SPOT INTERVENTION 
  
 WARNING- Do not use or rely upon the Blind Spot Intervention system (BSI) when 
towing a trailer.  The BSI system cannot function properly when objects are obstructing 
the radar sensors which could cause an accident, property damage, or death.   
 
TOW MODE (IF SO EQUIPPED) 
Tow Mode is recommended when towing a heavy trailer or hauling a heavy load, in 
stop-and-go traffic, rolling terrain, or a busy parking lot. Driving the vehicle in Tow Mode 
may affect fuel economy and transmission/engine driving characteristics. See your 
vehicle owner’s manual for additional information about Tow Mode.  
 
 
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 hear 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 traffic. 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 drop or continues to increase, stop the 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, stand 
clear to avoid being burned and shut 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 water/coolant may spurt out,  
possibly causing serious injury.  
  
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.