2021 INFINITI Towing Guide  
 
 
7
 
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. 
  
  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.  
  
 
 
 
 
 
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 &