Infiniti QX: Towing safety
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 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.
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.
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 trailer’s 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 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 vehicle’s
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.
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 vehicle’s 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 vehicle’s
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.
Towing load/specification
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Important safety notes
WARNING
For reasons of safety, have the NECK-PRO
head restraints/NECK-PRO luxury head
restraints checked at an authorized
Mercedes-Benz Center after a rear-end
collision.
WARNING&nbs ...