Lexus GX460 2021 Owner's Manual /

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Driving
Trailer towing (with towing hitch)
Your vehicle is designed primarily as
a passenger-and-load-carrying vehicle.
Towing a trailer can have an adverse im pact on handling, performance, brak-
ing, durability, and fuel consumption. Fo r your safety and the safety of others,
you must not overload your vehicle or trailer. You must also ensure that you
are using appropriate towing equipment, that the towing equipment has been
installed correctly and used properly, and that you employ the requisite driv-
ing habits.
Vehicle-trailer stability and braking pe rformance are affected by trailer sta-
bility, brake performance and setting, tr ailer brakes, the hitch and hitch sys-
tems (if equipped).
To tow a trailer safely, use extreme ca re and drive the vehicle in accordance
with your trailer’s characteri stics and operating conditions.
Lexus warranties do not apply to damage or malfunction caused by towing a
trailer for commercial purposes.
Contact your Lexus dealer for further information about additional require-
ments such as towing kits, etc.

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GX460_OM_OM60T19U_(U)4-1. Before driving
■GCWR (Gross Combination Weight Rating)
The maximum allowable gross com-
bination weight. The gross combina-
tion weight is the sum of the total
vehicle weight (including the occu-
pants, cargo and any optional equip-
ment installed on the vehicle) and
the weight of the trailer being towed
(including the cargo in the trailer).
■GVWR (Gross Vehicle Weight Rating)
The maximum allowable gross vehi-
cle weight. The gross vehicle weight
is the total weight of the vehicle.
When towing a trailer, it is the sum of
the vehicle weight (including the
occupants, cargo and any optional
equipment installed on the vehicle)
and the tongue weight.
Towing related terms

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Driving
■GAWR (Gross Axle Weight Rating)
The maximum allowable gross axle
weight. The gross axle weight is the
load placed on each axle (front and
rear).
■TWR (Trailer Weight Rating)
The maximum allowable gross trailer
weight. The gross trailer weight is
the sum of the trailer weight and the
weight of the cargo in the trailer.
TWR is calculated assuming base
vehicle with one driver, one front
passenger, towing package (if avail-
able), hitch and hitch systems (if
required).
Additional optional equipment, passengers and cargo in the vehicle will reduce the
trailer weight rating so as not to exceed GCWR, GVWR and GAWR.
If the gross trailer weight exceeds 3000 lb. (1360 kg), it is recommended to use a
trailer with 2 or more axles.
Front GAWR
Rear GAWR
(With brakes)

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GX460_OM_OM60T19U_(U)4-1. Before driving
■Unbraked TWR (Unbraked Trailer Weight Rating)
The trailer weight rating for towing a
trailer without a trailer service brake
system.
■Tongue Weight
The load placed on the trailer hitch
ball. (
P. 186)
(Without brakes)

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Driving
●The gross trailer weight must never exceed 6500 lb. (2950 kg).
●The gross combination weight must never exceed 13100 lb. (5940 kg).
●The gross vehicle weight must never
exceed the GVWR indicated on the
Certification Label.
●The gross axle weight on each axle
must never exceed the GAWR indi-
cated on the Certification Label.
●If the gross trailer weight is over the unbraked TWR, trailer service brakes are
required.
●If the gross trailer weight is over 2000 lb. (907 kg), a sway control device with
sufficient capacity is required.
●If the gross trailer weight is over 5 000 lb. (2268 kg), a weight distributing
hitch with sufficient capacity is required.
Confirm that the gross trailer weight, gross combination weight, gross vehicle
weight, gross axle weight and tongue weight are all within the limits.
■GCWR*
13100 lb. (5940 kg)
■TWR*
6500 lb. (2950 kg)
■Unbraked TWR*
1000 lb. (453 kg)
Weight limits
GCWR, TWR and Unbraked TWR
*: This model meets the tow-vehicle trailering requirement of SAE International per SAE
J2807.

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GX460_OM_OM60T19U_(U)4-1. Before driving
●A recommended tongue weight varies in accordance with the types of trailers
or towing as described below.
●To ensure the recommended values show
n below, the trailer must be loaded
by referring to the following instructions. • Tongue Weight
The gross trailer weight should be distributed so that the tongue weight is
9 % to 11 %. (Tongue weig ht/Gross trailer weight  100 = 9 % to 11 %)
Gross trailer weight
Tongue weight
If using a weight distributing hitch when towing, return the front axle to the
same weight as before the trailer connection.
If front axle weight cannot be meas ured directly, measure the front fender
height above the front axle before co nnection. Adjust weight distributing
hitch torque until front fender is return ed to the same height as before con-
nection.
The gross trailer weight, gross axle weight and tongue weight can be mea-
sured with platform scales found at a highway weighing station, building
supply company, trucking company, junk yard, etc.
Trailer Tongue Weight
1
2

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Driving
Trailer hitch assemblies have different weight capacities. Lexus recommends the
use of Lexus hitch/bracket for your ve hicle. For details, contact your Lexus
dealer.
●If you wish to install a trailer hitch, contact your Lexus dealer.
●Use only a hitch that conforms to the gross trailer weight requirement of your
vehicle.
●Follow the directions supplied by the hitch manufacturer.
●Lubricate the hitch ball with a light coating of grease.
●Remove the hitch ball whenever you are not towing a trailer. Remove the
trailer hitch if you do not need it. Afte r removing the hitch, seal any mounting
hole in the vehicle body to prevent en try of any substances into the vehicle.
Hitch

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GX460_OM_OM60T19U_(U)4-1. Before driving
Use the correct trailer ball for your application.
Trailer ball load rating
Matches or exceeds the gross trailer
weight rating of the trailer.
Ball diameter
Matches the size of the trailer coupler.
Most couplers are stamped with the
required trailer ball size.
Shank length
Protrudes beyond the bottom of the lock washer and nut by at least 2 threads.
Shank diameter
Matches the ball mount hole diameter size.
Selecting trailer ball
Trailer classTypical trailer ball size
IV2 5/16 in.
II and III2 in.
I1 7/8 in.
1
2
3
4

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Driving
Vehicles without rear height control
air suspension
Weight carrying ball position:
50.4 in. (1280.6 mm)
*
Hitch receiver pin hole position:
41.1 in. (1044.2 mm)
*
Vehicles with rear height control air
suspension
Weight carrying ball position: 50.5 in. (1282.7 mm)
*
Hitch receiver pin hole position: 41.2 in. (1046.6 mm)*
*
: Unladen vehicles
Use the wire harness stored in the rear
end under the vehicle body.
Please consult your dealer when installin g trailer lights, as incorrect installation
may cause damage to the vehicle’s lights. Please take care to comply with your
state’s laws when installing trailer lights.
Positions for towing hitch receiver and hitch ball
1
2
Connecting trailer lights
1
2

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GX460_OM_OM60T19U_(U)4-1. Before driving
Stop your vehicle and a trailer
in line and perform the following:
●Connecting a trailer
Set the rear height control air su spension (if equipped) to N mode.
Turn off the engine switch or the re ar height control air suspension (if
equipped).
Connect the trailer.
Turn on the switch that was turned off on step .
●Disconnecting a trailer
Set the rear height control air su spension (if equipped) to N mode.
Turn off the rear height control air suspension (if equipped).
Turn off the engine switch.
Set the supporting leg of the trailer on the ground and raise the hitch by
4 in. (100 mm)
Turn on the engine switch.
Turn on the rear height control air suspension (if equipped).
Wait until vehicle height is stabilized.
Make sure the hitch is disconnected. If the hitch does not disconnect, raise the
hitch higher and repeat steps through .
Connecting and disconnecting a trailer
1
2
3
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3
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