2021 INFINITI Towing Guide  
 
 
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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  
 
 
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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.