Toyota Tundra (2019 year). Manual — part 12

177

4-1. Before driving

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Confirm that the gross trailer weight, gross combination weight, gross
vehicle weight, gross axle weight and tongue weight are all within the
limits.

■

GCWR

*

5

and TWR

*

5



Double Cab models

GCWR, TWR, Unbraked TWR, Fifth wheel and Gooseneck towing
TWR

*

5

: These models meet the tow-vehicle trailering requirement of SAE

International per SAE J2807.

Model code

*

1

Engine

Driving

system Bed type

GCWR

TWR

UPK51L-

CRTSKA

1UR-FE

engine

2WD

Standard

12500 lb.

(5670 kg)

6800 lb.

(3080 kg)

UPK56L-

CRTSKA

4WD

12500 lb.

(5670 kg)

6500 lb.

(2945 kg)

USK51L-

CRTSKA

3UR-FE

engine

2WD

14000 lb.

(6350 kg)

*

2

8300 lb.

(3760 kg)

*

2

16000 lb.

(7255 kg)

*

3

10200 lb.

(4625 kg)

*

3

16000 lb.

(7255 kg)

*

4

10100 lb.

(4580 kg)

*

4

USK51L-

CRTLKA

14000 lb.

(6350 kg)

*

2

8200 lb.

(3715 kg)

*

2

16000 lb.

(7255 kg)

*

3

10200 lb.

(4625 kg)

*

3

16000 lb.

(7255 kg)

*

4

10100 lb.

(4580 kg)

*

4

USK52L-

CHTSKA

Long

14000 lb.

(6350 kg)

*

2

8100 lb.

(3670 kg)

*

2

16000 lb.

(7255 kg)

*

3

10100 lb.

(4580 kg)

*

3

16000 lb.

(7255 kg)

*

4

10000 lb.

(4535 kg)

*

4

178

4-1. Before driving

USK56L-

CRTSKA

3UR-FE

engine

4WD

Standard

14000 lb.

(6350 kg)

*

2

8000 lb.

(3625 kg)

*

2

16000 lb.

(7255 kg)

*

3

9900 lb.

(4490 kg)

*

3

15860 lb.

(7190 kg)

*

4

9700 lb.

(4395 kg)

*

4

USK56L-

CRTLKA

14000 lb.

(6350 kg)

*

2

7900 lb.

(3580 kg)

*

2

16000 lb.

(7255 kg)

*

3

9900 lb.

(4490 kg)

*

3

15310 lb.

(6945 kg)

*

4

9100 lb.

(4125 kg)

*

4

USK57L-

CHTSKA

Long

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15640 lb.

(7095 kg)

*

4

9300 lb.

(4215 kg)

*

4

USK56L-

CRTSGA

3UR-FBE

engine

Standard

14000 lb.

(6350 kg)

*

2

8000 lb.

(3625 kg)

*

2

16000 lb.

(7255 kg)

*

3

9900 lb.

(4490 kg)

*

3

15860 lb.

(7195 kg)

*

4

9700 lb.

(4395 kg)

*

4

Model code

*

1

Engine

Driving

system Bed type

GCWR

TWR

179

4-1. Before driving

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*

1

: The model code is indicated on the Certification Label. (



P. 599)

*

2

: Vehicles without towing package

*

3

: Vehicles with towing package

*

4

: Vehicles with towing package and large fuel tank

USK56L-

CRTLGA

3UR-FBE

engine

4WD

Standard

14000 lb.

(6350 kg)

*

2

7900 lb.

(3580 kg)

*

2

16000 lb.

(7255 kg)

*

3

9900 lb.

(4490 kg)

*

3

15310 lb.

(6945 kg)

*

4

9100 lb.

(4125 kg)

*

4

USK57L-

CHTSGA

Long

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15640 lb.

(7095 kg)

*

4

9300 lb.

(4215 kg)

*

4

Model code

*

1

Engine

Driving

system Bed type

GCWR

TWR

180

4-1. Before driving



CrewMax models

Model code

*

1

Engine

Driving

system Bed type

GCWR

TWR

UPK51L-

PSTSKA

1UR-FE

engine

2WD

Short

12500 lb.

(5670 kg)

6700 lb.

(3035 kg)

UPK56L-

PSTSKA

4WD

12500 lb.

(5670 kg)

6400 lb.

(2900 kg)

USK51L-

PSTSKA

3UR-FE

engine

2WD

14000 lb.

(6350 kg)

*

2

8100 lb.

(3670 kg)

*

2

16000 lb.

(7255 kg)

*

3

10100 lb.

(4580 kg)

*

3

15910 lb.

(7215 kg)

*

4

9900 lb.

(4490 kg)

*

4

USK51L-

PSTLKA

14000 lb.

(6350 kg)

*

2

8000 lb.

(3625 kg)

*

2

16000 lb.

(7255 kg)

*

3

10000 lb.

(4535 kg)

*

3

15530 lb.

(7045 kg)

*

4

9400 lb.

(4260 kg)

*

4

USK51L-

PSTZKA

14000 lb.

(6350 kg)

*

2

8000 lb.

(3625 kg)

*

2

16000 lb.

(7255 kg)

*

3

10000 lb.

(4535 kg)

*

3

15520 lb.

(7040 kg)

*

4

9400 lb.

(4260 kg)

*

4

USK56L-

PSTSKA

4WD

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15540 lb.

(7050 kg)

*

4

9200 lb.

(4170 kg)

*

4

USK56L-

PSTLKA

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15170 lb.

(6880 kg)

*

4

8800 lb.

(3990 kg)

*

4

181

4-1. Before driving

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*

1

: The model code is indicated on the Certification Label. (



P. 599)

*

2

: Vehicles without towing package

*

3

: Vehicles with towing package

*

4

: Vehicles with towing package and large fuel tank

■

Unbraked TWR

*

5

1000 lb. (453 kg)

USK56L-

PSTZKA

3UR-FE

engine

4WD

Short

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15160 lb.

(6875 kg)

*

4

8800 lb.

(3990 kg)

*

4

USK56L-

PSTSGA

3UR-FBE

engine

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15540 lb.

(7050 kg)

*

4

9200 lb.

(4170 kg)

*

4

USK56L-

PSTLGA

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15170 lb.

(6880 kg)

*

4

8800 lb.

(3990 kg)

*

4

USK56L-

PSTZGA

14000 lb.

(6350 kg)

*

2

7800 lb.

(3535 kg)

*

2

16000 lb.

(7255 kg)

*

3

9800 lb.

(4445 kg)

*

3

15160 lb.

(6875 kg)

*

4

8800 lb.

(3990 kg)

*

4

*

5

: These models meet the tow-vehicle trailering requirement of SAE

International per SAE J2807.

Model code

*

1

Engine

Driving

system Bed type

GCWR

TWR

182

4-1. Before driving

● A recommended tongue weight or kingpin weight varies in accor-

dance with the types of trailers or towing as described below.

● To ensure the recommended values shown below, the trailer must

be loaded by referring to the following instructions.
1.Conventional Towing

The gross trailer weight should be distributed so that the tongue
weight is 9% to 11%. (Tongue Weight/Gross trailer weight x 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 measured directly, measure the
front fender height above the front axle before connection. Adjust
weight distributing hitch torque until front fender is returned to the
same height as before connection.
Do not reduce front fender height below original measurement.
The gross trailer weight, gross axle weight and tongue weight
can be measured with platform scales found at a highway weigh-
ing station, building supply company, trucking company, junk
yard, etc.

Trailer Tongue Weight and Trailer Kingpin Weight

1

2

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4-1. Before driving

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2.Fifth wheel Towing or Gooseneck Towing

The gross trailer weight should be distributed so that the kingpin
weight is 14% to 16%. (Kingpin weight/Gross trailer weight x 100
= 14% to 16%)

Gross trailer weight
Kingpin weight

The gross trailer weight and kingpin weight can be measured
with platform scales found at a highway weighing station, build-
ing supply company, trucking company, junk yard, etc.
CrewMax models: Current fifth wheel trailer designs are not com-
patible with short bed.

Trailer hitch assemblies have different weight capacities. Toyota rec-
ommends the use of Toyota hitch/bracket for your vehicle. For details,
contact your Toyota dealer.
● If you wish to install a trailer hitch, contact your Toyota dealer.
● Use only a hitch that conforms to the gross trailer weight require-

ment of your vehicle.

● Follow the directions supplied by the hitch manufacturer.
● Lubricate the hitch ball and kingpin with a light coating of grease.
● Remove the trailer hitch whenever you are not towing a trailer. After

removing the hitch, seal any mounting hole in the vehicle body to
prevent entry of any substances into the vehicle.

1

2

Hitch

184

4-1. Before driving

The rear bumper of your vehicle is
equipped with a hole to install a
trailer ball. If you have any ques-
tions, contact your Toyota dealer.

The gross trailer weight (trailer
weight plus cargo weight) when
towing with the bumper must never
exceed the TWR (

P. 177) or

5000 lb. (2268 kg) whichever is
lower.

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 cou-
pler. 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.

Bumper towing (vehicles with steel bumper only)

Selecting trailer ball

1

2

Trailer class

IV

II and III

I

Typical trailer ball size

2 5/16 in.

2 in.

1 7/8 in.

3

4

185

4-1. Before driving

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Hitch receiver pin hole position:
46.4 in. (1179 mm)

Use the wire harness stored in the rear end of the vehicle.
The tow lighting system is designed for 64 watts/5 amps of electrical
current per side (right and left) for the trailer brake/turn light functions.
Please contact your Toyota dealer with any questions or concerns.

■

Service connector for towing brake controllers (vehicles without an
installed trailer brake controller)

Positions for towing hitch receiver

1

Connecting trailer lights



Vehicles without towing pack-
age



Vehicles with towing package

Your vehicle is equipped with a service
connector for supplemental trailer brake
controllers.
Please consult your dealer on how to
access the service connector.

186

4-1. Before driving

Your vehicle will handle differently when towing a trailer. To help avoid
an accident, death or serious injury, keep the following in mind when
towing:
● Speed limits for towing a trailer vary by state or province. Do not

exceed the posted towing speed limit.

● Toyota recommends that the vehicle-trailer speed limit is 65 mph

(104 km/h) on a flat, straight, dry road. Do not exceed this limit, the
posted towing speed limit or the speed limit for your trailer as set
forth in your trailer owner’s manual, whichever is lowest. Instability
of the towing vehicle-trailer combination (trailer sway) increases as
speed increases. Exceeding speed limits may cause loss of control.

● Before starting out, check the trailer lights, tires and the vehicle-

trailer connections. Recheck after driving a short distance.

● Practice turning, stopping and reversing with the trailer attached in

an area away from traffic until you become accustomed to the feel
of the vehicle-trailer combination.

● Reversing with a trailer attached is difficult and requires practice.

Grip the bottom of the steering wheel and move your hand to the
left to move the trailer to the left. Move your hand to the right to
move the trailer to the right. (This is generally opposite to reversing
without a trailer attached.) Avoid sharp or prolonged turning. Have
someone guide you when reversing to reduce the risk of an acci-
dent.

● As stopping distance is increased when towing a trailer, vehicle-to-

vehicle distance should be increased. For each 10 mph (16 km/h)
of speed, allow at least one vehicle and trailer length.

Trailer towing tips

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● Avoid sudden braking as you may skid, resulting in the trailer jack-

knifing and a loss of vehicle control. This is especially true on wet or
slippery surfaces.

● Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before making

a turn.

● Note that when making a turn, the trailer wheels will be closer than

the vehicle wheels to the inside of the turn. Compensate by making
a wider than normal turning radius.

● Slow down before making a turn, in crosswinds, on wet or slippery

surfaces, etc.
Increasing vehicle speed can destabilize the trailer.

● Take care when passing other vehicles. Passing requires consider-

able distance. After passing a vehicle, do not forget the length of
your trailer, and be sure you have plenty of room before changing
lanes.

● To maintain engine braking efficiency and charging system perfor-

mance when using engine braking, do not use the transmission in
D.
Transmission shift range position must be in 4 in the S mode.

● Instability happens more frequently when descending steep or long

downhill grades. Before descending, slow down and downshift. Do
not make sudden downshifts while descending steep or long down-
hill grades.

● Avoid holding the brake pedal down too long or applying the brakes

too frequently. This could cause the brakes to overheat and result in
reduced braking efficiency.

● Due to the added load of the trailer, your vehicle’s engine may over-

heat on hot days (at temperatures over 85°F [30°C]) when driving
up a long or steep grade. If the engine coolant temperature gauge
indicates overheating, immediately turn off the air conditioning (if in
use), pull your vehicle off the road and stop in a safe spot.
(

P. 585)

188

4-1. Before driving

● Always place wheel blocks under both the vehicle’s and the trailer’s

wheels when parking. Apply the parking brake firmly, and put the
transmission in P. Avoid parking on a slope, but if unavoidable, do
so only after performing the following:

Apply the brakes and keep them applied.
Have someone place wheel blocks under both the vehicle’s and
trailer’s wheels.
When the wheel blocks are in place, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the engine.

● When restarting after parking on a slope:

With the transmission in P, start the engine. Be sure to keep the
brake pedal pressed.
Shift into D or R (if reversing).
Release the parking brake and brake pedal, and slowly pull or
back away from the wheel blocks. Stop and apply the brakes.
Have someone retrieve the blocks.

1

2

3

4

5

1

2

3

4

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■

Trailer brake controller
P. 307

■

Matching trailer ball height to trailer coupler height

■

Before towing
Check that the following conditions are met:

●

Ensure that your vehicle’s tires are properly inflated. (

P. 606)

●

Trailer tires are inflated according to the trailer manufacturer’s recommen-
dation.

●

All trailer lights work as required by law.

●

All lights work each time you connect them.

●

The trailer ball is set at the proper height for the coupler on the trailer.

●

The trailer is level when it is hitched.
Do not drive if the trailer is not level, and check for improper tongue weight,
overloading, worn suspension, or other possible causes.

●

The trailer cargo is securely loaded.

●

The rear view mirrors conform to all applicable federal, state/provincial or
local regulations. If they do not, install rear view mirrors appropriate for tow-
ing purposes.

●

Depress TOW/HAUL button (if equipped). (

P. 199)

●

The manual headlight leveling dial is correctly adjusted. (

P. 207)

No matter which class of tow hitch
applies, for a more safe trailer hookup,
the trailer ball setup must be the proper
height for the coupler on the trailer.

Coupler
Trailer ball

1

2

190

4-1. Before driving

■

Break-in schedule
If your vehicle is new or equipped with any new power train components
(such as an engine, transmission, differential or wheel bearing), Toyota rec-
ommends that you do not tow a trailer until the vehicle has been driven for
over 500 miles (800 km).
After the vehicle has been driven for over 500 miles (800 km), you can start
towing. However, for the next 500 miles (800 km), drive the vehicle at a speed
of less than 50 mph (80 km/h) when towing a trailer, and avoid full throttle
acceleration.

■

Maintenance

●

If you tow a trailer, your vehicle will require more frequent maintenance due
to the additional load. (See “Owner’s Warranty Information Booklet” or
“Scheduled Maintenance Guide”/“Owner’s Manual Supplement”.)

●

Retighten the fixing bolts of the towing ball and bracket after approximately
600 miles (1000 km) of trailer towing.

■

If trailer sway occurs
One or more factors (crosswinds, passing vehicles, rough roads, etc.) can
adversely affect handling of your vehicle and trailer, causing instability.

●

If trailer swaying occurs:
• Firmly grip the steering wheel. Steer straight ahead.

Do not try to control trailer swaying by turning the steering wheel.

• Begin releasing the accelerator pedal immediately but very gradually to

reduce speed.
Do not increase speed. Do not apply vehicle brakes.

If you make no extreme correction with the steering or brakes, your vehicle
and trailer should stabilize. (if enabled, Trailer Sway Control can also help to
stabilize the vehicle and trailer.)

●

After the trailer swaying has stopped:
• Stop in a safe place. Get all occupants out of the vehicle.
• Check the tires of the vehicle and the trailer.
• Check the load in the trailer.

Make sure the load has not shifted.
Make sure the tongue weight is appropriate, if possible.

• Check the load in the vehicle.

Make sure the vehicle is not overloaded after occupants get in.

If you cannot find any problems, the speed at which trailer swaying occurred
is beyond the limit of your particular vehicle-trailer combination.
Drive at a lower speed to prevent instability. Remember that swaying of the
towing vehicle-trailer increases as speed increases.

191

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WARNING

■

Trailer towing precautions
To tow a trailer safely, use extreme care and drive the vehicle in accordance
with the trailer’s characteristics and operating conditions. Failure to do so
could cause an accident resulting in death or serious injury. Vehicle stability
and braking performance are affected by trailer stability, brake setting and
performance, and the hitch. Your vehicle will handle differently when towing
a trailer.

■

To avoid accident or injury

●

Do not exceed the TWR, unbraked TWR, GCWR, GVWR or GAWR.

●

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 5000 lb. (2268 kg), a weight distributing
hitch with sufficient capacity is required.

●

Adjust the tongue weight within the appropriate range. Place heavier loads
as close to the trailer axle as possible.

●

Do not exceed 65 mph (104 km/h), the posted towing speed limit or the
speed limit for your trailer as set forth in your trailer owner’s manual,
whichever is lowest. Slow down sufficiently before making a turn, in cross-
winds, on wet or slippery surface, etc., to help avoid an accident. If you
experience a vehicle-trailer instability from reducing a certain speed, slow
down and make sure you keep your vehicle speed under the speed of
which you experience the instability.

●

Do not make jerky, abrupt or sharp turns.

●

Do not apply the brakes suddenly as you may skid, resulting in jackknifing
and loss of vehicle control. This is especially true on wet or slippery sur-
faces.

●

Do not exceed the trailer hitch assembly weight, gross vehicle weight,
gross axle weight and trailer tongue weight capacities.

●

Do not use cruise control when towing.

●

Slow down and downshift before descending steep or long downhill
grades. Do not make sudden downshifts while descending steep or long
downhill grades.

●

Vehicle-trailer instability is more likely on steep long downhills. Before
descending steep or long downhill grades, slow down and downshift. Do
not make sudden downshifts when descending steep or long downhill
grades. Avoid holding the brake pedal down too long or applying the
brakes too frequently. This could cause the brakes to overheat and result
in reduced braking efficiency.

●

Do not tow a trailer when the temporary spare tire is installed on your vehi-
cle.

192

4-1. Before driving

WARNING

■

Hitch
Trailer hitch assemblies have different weight capacities established by the
hitch manufacturer. Even though the vehicle may be physically capable of
towing a higher weight, the operator must determine the maximum weight
rating of the particular hitch assembly and never exceed the maximum
weight rating specified for the trailer-hitch. Exceeding the maximum weight
rating set by the trailer-hitch manufacturer can cause an accident resulting
in death or serious personal injuries.

■

When towing a trailer
Toyota recommends trailers with brakes that conform to any applicable fed-
eral and state/provincial regulations.

●

If the gross trailer weight exceeds unbraked TWR, trailer brakes are
required. Toyota recommends trailers with brakes that conform to all appli-
cable federal and state/provincial regulations.

●

Never tap into your vehicle’s hydraulic system, as this will lower the vehi-
cle’s braking effectiveness.

●

Never tow a trailer without using a safety chain securely attached to both
the trailer and the vehicle. If damage occurs to the coupling unit or hitch
ball, there is danger of the trailer wandering into another lane.

NOTICE

■

When installing a trailer hitch
Use only the position recommended by your Toyota dealer. Do not install
the trailer hitch on the bumper; this may cause body damage.

■

Do not directly splice trailer lights
Do not directly splice trailer lights. Directly splicing trailer lights may damage
your vehicle’s electrical system and cause a malfunction.

■

When towing a fifth wheel trailer

Be careful not to hit the cabin or bed with
the trailer while making a sharp turn.