Towing safety

Towing safety  - Towing a trailer - Technical and consumer information - Infiniti QX Owners Manual - Infiniti QX

Trailer hitch

Your vehicle is equipped with a trailer tow package. The trailer tow package includes a receiver-type frame mounted hitch. This hitch is rated for the maximum towing capacity of this vehicle when the proper towing equipment is used. Choose a proper ball mount and hitch ball that is rated for the trailer to be towed. Genuine INFINITI ball mounts and hitch balls are available from an INFINITI retailer.

To access the trailer hitch A , remove the

To access the trailer hitch A , remove the trailer hitch cover located on the lower part of the rear bumper. To remove the trailer hitch cover: 1. Remove the 2 clips. 2. Pull the bottom of the cover straight backward to remove the inner side and upper clips.

Trailer hitch components have specific WARNING
Trailer hitch components have specific weight ratings. Your vehicle may be capable of towing a trailer heavier than the weight rating of the hitch components. Never exceed the weight rating of the hitch components. Doing so can cause serious personal injury or property damage.

Hitch ball

Choose a hitch ball of the proper size and weight rating for your trailer:
► The required hitch ball size is stamped on most trailer couplers. Most hitch balls also have the size printed on top of the ball.
► Choose the proper class hitch ball based on the trailer weight.
► The diameter of the threaded shank of the hitch ball must be matched to the ball mount hole diameter. The hitch ball shank should be no more than 1/16 smaller than the hole in the ball mount.
► The threaded shank of the hitch ball must be long enough to be properly secured to the ball mount. There should be at least 2 threads showing beyond the lock washer and nut.

Ball mount

The hitch ball is attached to the ball mount and the ball mount is inserted into the hitch receiver. Choose a proper class ball mount based on the trailer weight. Additionally, the ball mount should be chosen to keep the trailer tongue level with the ground.

Weight carrying hitches

A weight carrying or dead weight ball mount is one that is designed to carry the whole amount of tongue weight and gross weight directly on the ball mount and on the receiver.

Weight distribution hitch

This type of hitch is also called a loadleveling or equalizing hitch. A set of bars attach to the ball mount and to the trailer to distribute the tongue weight (hitch weight) of your trailer. Many vehicles cannot carry the full tongue weight of a given trailer, and need some of the tongue weight transferred through the frame and pushing down on the front wheels. This gives stability to the tow vehicle. A weight-distributing hitch system (Class IV) is recommended if you plan to tow trailers with a maximum weight over 5,000 lbs (2,267 kg). Check with the trailer and towing equipment manufacturers to determine if they recommend the use of a weight-distributing hitch system.

NOTE:

A weight-distributing hitch system may affect the operation of trailer surge brakes. If you are considering use of a weightdistributing hitch system with a surge brake-equipped trailer, check with the surge brake, hitch or trailer manufacturer to determine if and how this can be done.

Follow the instructions provided by the manufacturer for installing and using the weight-distributing hitch system. General set-up instructions are as follows: 1. Park unloaded vehicle on a level surface. With the ignition switch in the ON position and the doors closed, allow the vehicle to stand for several minutes so that it can level. 2. Measure the height of a reference point on the front and rear bumpers at the center of the vehicle. 3. Attach the trailer to the vehicle and adjust the hitch equalizers so that the front bumper height is within 0 - .5 inches (0 - 13 mm) of the reference height measured in step 2. The rear bumper should be no higher than the reference height measured in step 2.

Properly adjust the weight distributing hitch WARNING
Properly adjust the weight distributing hitch so the rear of the bumper is no higher than the measured reference height when the trailer is attached. If the rear bumper is higher than the measured reference height when loaded, the vehicle may handle unpredictably which could cause a loss of vehicle control and cause serious personal injury or property damage.

Sway control device

Sudden maneuvers, wind gusts and buffeting caused by other vehicles can affect trailer handling. Sway control devices may be used to help control these affects. If you choose to use one, contact a reputable trailer hitch supplier to make sure the sway control device will work with the vehicle, hitch, trailer and the trailers brake system. Follow the instructions provided by the manufacturer for installing and using the sway control device.

Class I hitch

Class I trailer hitch equipment (receiver, ball mount and hitch ball) can be used to tow trailers of a maximum weight of 2,000 lb (907 kg).

Class II hitch

Class II trailer hitch equipment (receiver, ball mount and hitch ball) can be used to tow trailers of a maximum weight of 3,500 lb (1,588 kg).

Class III hitch

Class III trailer hitch equipment (receiver, ball mount and hitch ball) can be used to tow trailers of a maximum weight of 5,000 lb (2,267 kg).

Class IV hitch

Class IV trailer hitch equipment (receiver, ball mount and hitch ball) can be used to tow trailers of a maximum weight of 10,000 lb (4,545 kg). A weight distributing hitch should be used to tow trailers that weigh over 5,000 lb (2,267 kg). Your vehicle may be equipped with Class IV trailer hitch equipment that has a 10,000 lb (4,545 kg) maximum weight rating, but your vehicle is only capable of towing the maximum trailer weights shown in the Towing Load/Specification chart earlier in this section.

CAUTION
► Do not use axle-mounted hitches.
► Do not modify the vehicle exhaust system, brake system, etc.
► Do not attach any additional hitches to your vehicle because a hitch is already mounted to your vehicle frame.

Tire pressures

► When towing a trailer, inflate the vehicle tires to the recommended cold tire pressure indicated on the Tire and Loading Information label.
► Trailer tire condition, size, load rating and proper inflation pressure should be in accordance with the trailer and tire manufacturers specifications.

Safety chains

Always use a suitable chain between your vehicle and the trailer. The safety chains should be crossed and should be attached to the hitch, not to the vehicle bumper or axle. Be sure to leave enough slack in the chains to permit turning corners.

Trailer lights

Your vehicle is equipped with a towing

Your vehicle is equipped with a towing package, which also includes the 7-pin trailer harness connector located under the trailer hitch cover on the rear bumper.

CAUTION
► When splicing into the vehicle electrical system, a commercially available powertype module/converter must be used to provide power for all trailer lighting. This unit uses the vehicle battery as a direct power source for all trailer lights while using the vehicle tail light, stoplight and turn signal circuits as a signal source. The module/converter must draw no more than 15 milliamps from the stop and tail lamp circuits. Using a module/ converter that exceeds these power requirements may damage the vehicles electrical system. See a reputable trailer retailer to obtain the proper equipment and to have it installed.
► Do not connect electrical devices that draw more than 40 amps to the vehicle. The fusible link may melt. Trailer lights should comply with federal and/or local regulations. For assistance in hooking up trailer lights, contact an INFINITI retailer or reputable trailer retailer.

Trailer brakes

When towing a trailer load of 3,500 lbs. (1,587 kg) or more, trailers with a brake system MUST be used. However, most states require a separate braking system on trailers with a loaded weight above a specific amount. Make sure the trailer meets the local regulations and the regulations where you plan to tow. Several types of braking systems are available. Surge Brakes - The surge brake actuator is mounted on the trailer tongue with a hydraulic line running to each trailer wheel. Surge brakes are activated by the trailer pushing against the hitch ball when the tow vehicle is braking. Hydraulic surge brakes are common on rental trailers and some boat trailers. In this type of system, there is no hydraulic or electric connection for brake operation between the tow vehicle and the trailer. Electric Trailer Brakes - Electric braking systems are activated by an electronic signal sent from a trailer brake controller (special brake sensing module). Have a professional supplier of towing equipment make sure the trailer brakes are properly installed and demonstrate proper brake function testing.

Never connect a trailer brake system directly WARNING
Never connect a trailer brake system directly to the vehicle brake system.

Pre-towing tips

► Be certain your vehicle maintains a level position when a loaded or unloaded trailer is hitched. Do not drive the vehicle if it has an abnormal nose-up or nose-down condition; check for improper tongue load, overload, worn suspension or other possible causes of either condition.
► Always secure items in the trailer to prevent load shift while driving.
► Keep the cargo load as low as possible in the trailer to keep the trailer center of gravity low.
► Load the trailer so approximately 60% of the trailer load is in the front half and 40% is in the back half. Also make sure the load is balanced side to side.
► Check your hitch, trailer tire pressure, vehicle tire pressure, trailer light operation, and trailer wheel lug nuts every time you attach a trailer to the vehicle.
► Be certain your rearview mirrors conform to all federal, state or local regulations. If not, install any mirrors required for towing before driving the vehicle.
► Determine the overall height of the vehicle and trailer so the required clearance is known.

Trailer towing tips

In order to gain skill and an understanding of the vehicles behavior, you should practice turning, stopping and backing up in an area which is free from traffic. Steering stability, and braking performance will be somewhat different than under normal driving conditions.
► Always secure items in the trailer to prevent load shift while driving.
► Lock the trailer hitch coupler with a pin or lock to prevent the coupler from inadvertently becoming unlatched.
► Avoid abrupt starts, acceleration or stops.
► Avoid sharp turns or lane changes.
► Always drive your vehicle at a moderate speed. Some states or provinces have specific speed limits for vehicles that are towing trailers. Obey the local speed limits.
► When backing up, hold the bottom of the steering wheel with one hand. Move your hand in the direction in which you want the trailer to go. Make small corrections and back up slowly. If possible, have someone guide you when you are backing up. Always block the wheels on both vehicle and trailer when parking. Parking on a slope is not recommended; however, if you must do so:

CAUTION
If you move the shift selector lever to the P (Park) position before blocking the wheels and applying the parking brake, transmission damage could occur.

1. Apply and hold the brake pedal. 2. Have someone place blocks on the downhill side of the vehicle and trailer wheels. 3. After the wheel blocks are in place, slowly release the brake pedal until the blocks absorb the vehicle load. 4. Apply the parking brake. 5. Shift the transmission into P (Park). 6. Four-Wheel Drive (4WD) models: Make sure that the 4WD shift switch is engaged in the AUTO, 4HI or 4LO position and the Automatic Transmission (AT) park warning light is turned off. 7. Turn off the engine. To drive away: 1. Apply and hold the brake pedal. 2. Start the engine. 3. Shift the transmission into gear. 4. Release the parking brake. 5. Drive slowly until the vehicle and trailer are clear from the blocks. 6. Apply and hold the brake pedal. 7. Have someone retrieve and store the blocks.
► While going downhill, the weight of the trailer pushing on the tow vehicle may decrease overall stability. Therefore, to maintain adequate control, reduce your speed and shift to a lower gear. Avoid long or repeated use of the brakes when descending a hill, as this reduces their effectiveness and could cause overheating. Shifting to a lower gear instead provides engine braking and reduces the need to brake as frequently.
► If the engine coolant temperature rises to a high temperature, see If your vehicle overheats in the 6. In case of emergency section.
► Trailer towing requires more fuel than normal circumstances.
► Avoid towing a trailer for your vehicles first 500 miles (800 km).
► Have your vehicle serviced more often than at intervals specified in the recommended maintenance schedule in the INFINITI Service and Maintenance Guide.
► When making a turn, your trailer wheels will be closer to the inside of the turn than your vehicle wheels. To compensate for this, make a larger than normal turning radius during the turn.
► Crosswinds and rough roads will adversely affect vehicle/trailer handling, possibly causing vehicle sway. When being passed by larger vehicles, be prepared for possible changes in crosswinds that could affect vehicle handling. Do the following if the trailer begins to sway: 1. Take your foot off the accelerator pedal to allow the vehicle to coast and steer as straight ahead as the road conditions allow. This combination will help stabilize the vehicle.
► Do not correct trailer sway by steering or applying the brakes. 2. When the trailer sway stops, gently apply the brakes and pull to the side of the road in a safe area. 3. Try to rearrange the trailer load so it is balanced as described earlier in this section.
► Be careful when passing other vehicles. Passing while towing a trailer requires considerably more distance than normal passing. Remember the length of the trailer must also pass the other vehicle before you can safely change lanes.
► Use the Tow mode or downshift the transmission to a lower gear for engine braking when driving down steep or long hills. This will help slow the vehicle without applying the brakes.
► Avoid holding the brake pedal down too long or too frequently. This could cause the brakes to overheat, resulting in reduced braking efficiency.
► Increase your following distance to allow for greater stopping distances while towing a trailer. Anticipate stops and brake gradually.
► INFINITI recommends that the cruise control not be used while towing a trailer.
► While towing a trailer, do not use the following systems (if so equipped): the Lane Departure Prevention (LDP) system the Blind Spot Warning (BSW) system the Blind Spot Intervention system the Intelligent Cruise Control (ICC) system the Distance Control Assist (DCA) system the Intelligent Brake Assist (IBA) system
► Some states or provinces have specific regulations and speed limits for vehicles that are towing trailers. Obey the local speed limits.
► Check your hitch, trailer wiring harness connections, and trailer wheel lug nuts after 50 miles (80 km) of travel and at every break.
► When launching a boat, do not allow the water level to go over the exhaust tail pipe or rear bumper.

. Make sure you disconnect the trailer lights before backing the trailer into the water or the trailer lights may burn out. When towing a trailer, the transmission fluid should be changed more frequently. For additional information, see the INFINITI Service and Maintenance Guide.

TOW mode

Using TOW mode is recommended when pulling a heavy trailer or hauling a heavy load. Push the TOW MODE switch to activate tow mode. The TOW MODE indicator light in the meter illuminates when TOW mode is selected. Push the TOW MODE switch again to turn TOW mode off. TOW mode is automatically cancelled when the ignition switch is placed in the OFF position. TOW mode includes the following features:
► Grade logic Adjusts transmission shifts when pulling a trailer or hauling a load up a grade.
► Downhill Speed Control (DSC) automatically downshifts when driving down a grade with a trailer or heavy load to help control vehicle speed. Driving the vehicle in the TOW mode with no trailer/load or light trailer/light load will not cause any damage. However, fuel economy may be reduced and the transmission/ engine driving characteristics may feel unusual. When towing a trailer, the transmission fluid should be changed more frequently. For additional information, see the INFINITI Service and Maintenance Guide.

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