trailer TOYOTA SIENNA HYBRID 2023 Owners Manual

3TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
4-1. Before drivingDriving the vehicle......... 210
Cargo and luggage ....... 217
Vehicle load limits ......... 220
Trailer towing (without towing package) ..................... 221
Trailer towing (with towing package) ..................... 222
Dinghy towing ............... 232
4-2. Driving procedures Power (ignition) switch .. 234
EV drive mode .............. 239
Hybrid transmission ...... 241
Turn signal lever ........... 245
Parking brake ................ 246
Brake Hold .................... 249
4-3. Operating the lights and wipers
Headlight switch ............ 251
AHB (Automatic High Beam) .................................... 253
Fog light switch ............. 257
Windshield wipers and washer......................... 257
Rear window wiper and washer......................... 260
4-4. Refueling Opening the fuel tank cap.................................... 262
4-5. Using the driving support
systems
Toyota Safety Sense 2.0 265
PCS (Pre-Collision System) .................................... 270LTA (Lane Tracing Assist)
.................................... 278
RSA (Road Sign Assist) 288
Dynamic radar cruise control with full-speed range ... 291
BSM (Blind Spot Monitor) .................................... 302
Intuitive parking assist ... 312
RCD (Rear Camera Detec- tion) function ................ 320
PKSB (Parking Support Brake) .......................... 324
Parking Support Brake func- tion (static objects) ...... 329
Parking Support Brake func- tion (rear-crossing vehicles).................................... 332
Driving mode s elect switch
.................................... 334
Driving assist systems ... 335
4-6. Driving tips Hybrid Electric Vehicle driv-ing tips ......................... 342
Winter driving tips .......... 344
5-1. Using the ai r conditioning
system and defogger
Front automatic air condition- ing system ................... 348
Re ar automatic air condition-
i n

g system ................... 358
Heated steering wheel/seat heaters/seat ventilators 361
5-2. Using the interior lights Interior lights list ............ 363
4Driving
5Interior features

209
4
4
Driving
Driving
4-1. Before drivingDriving the vehicle....... 210
Cargo and luggage ..... 217
Vehicle load limits ....... 220
Trailer towing (without tow- ing package).............. 221
Trailer towing (with towing package) ................... 222
Dinghy towing ............. 232
4-2. Driving procedures Power (ignition) switch 234
EV drive mode ............ 239
Hybrid transmission .... 241
Turn signal lever ......... 245
Parking brake .............. 246
Brake Hold .................. 249
4-3. Operating the lights and wipers
Headlight switch .......... 251
AHB (Automatic High Beam)........................ 253
Fog light switch ........... 257
Windshield wipers and washer....................... 257
Rear window wiper and washer....................... 260
4-4. Refueling Opening the fuel tank cap.................................. 2624-5. Using the dr
iving support
systems
Toyota Safety Sense 2.0 .................................. 265
PCS (Pre-Collision System) .................................. 270
LTA (Lane Tracing Assist) .................................. 278
RSA (Road Sign Assist) .................................. 288
Dynamic radar cruise con- trol with full-speed range
.................................. 291
BSM (Blind Spot Monitor) .................................. 302
Intuitive parking assist . 312
RCD (Rear Camera Detec- tion) function .............. 320
PKSB (Parking Support Brake) ........................ 324
Parking Support Brake func- tion (static objects)
.................................. 329
Parking Support Brake function (rear-crossing
vehicles) .................... 332
Driving mode select switch .................................. 334
Driving assist systems. 335
4-6. Driving tips Hybrid Electric Vehicle driv-ing tips ....................... 342
Winter driving tips........ 344

2114-1. Before driving
4
Driving
up, and the road could be slip-
pery.
●Drive carefully when it starts to
rain, as the road surface could be
especially slippery.
●Refrain from high speeds when
driving on an expressway in the
rain, because there may be a
layer of water between the tires
and the road surface, preventing
the steering and brakes from
operating properly.
■ECO Accelerator Guidance
(  P.108)
It is easier to drive in an Eco-friendly
manner by driving while referring to
the ECO Accelerator Guidance dis-
play. Also, by using the ECO Accel-
erator Guidance it is easier to
increase the “Eco Score” evaluation.
●When starting off:
While staying within the ECO
Accelerator Guidance range,
gradually depress the accelerator
pedal and accelerate to the
desired speed. If excessive accel-
eration is avoid ed, the “Start”
score will increase.
●When driving:
After accelerating to the desired
speed, release the accelerator
pedal and drive at a stable speed
within the ECO Acce lerator Guid-
ance range. By keeping the vehi-
cle within the E CO Accelerator
Guidance range, the “Cruise”
score will increase.
●When stopping:
When stopping the vehicle, early
releasing the accelerator pedal
will cause the “Stop” score to
increase.
■Restraining the hybrid system
output (Brake Override System)
●When the accelerator and brake
pedals are depressed at the same
time, the hybrid system output
may be restrained.
●A warning message is displayed
on the multi-information display and head-up display (if equipped)
while the system is operating.
(
 P.469)
■Restraining sudden start (Drive-
Start Control)
●When the following unusual oper-
ation is performed, the hybrid sys-
tem output may b e restrained.
• When the shift lever is shifted from
R to D, D to R, N to R, P to D
*, or
P to R* (D includes S) with the
accelerator pedal depressed, a
warning message appears on the
multi-information display and
head-up display (i f equipped). If a
warning message is shown on the
multi-information display and
head-up display (if equipped),
read the message and follow the
instructions.
• When the accelerator pedal is
depressed too much while the
vehicle is in reverse.
*: Depending on the situation, the
shift position may not be changed.
●When the TRAC is turned off
( P.337), sudden start restraint
control also does not operate. If
your vehicle have trouble escap-
ing from the mud or fresh snow
due to the sudden start restraint
control operation, deactivate
TRAC ( P.337) so that the vehi-
cle may become able to escape
from the mud o r fresh snow.
■Breaking in your new Toyota
To extend the life of the vehicle,
observing the following precautions
is recommended:
●For the first 200 miles (300 km):
Avoid sudden stops.
●For the first 500 miles (800 km):
Do not tow a trailer.
●For the first 600 miles (1000 km):
• Do not drive at extremely high
speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low gears.

2184-1. Before driving
For example, if the “XXX”
amount equals 1400 lbs. and
there will be five 150 lb passen-
gers in your vehicle, the amount
of available cargo and luggage
load capacity is 650 lbs. (1400 -
750 (5  150) = 650 lbs.)
(5) Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely
exceed the available cargo and
luggage load capacity calcu-
lated in Step 4.
(6) If your vehicle will be towing
a trailer, load from your trailer
will be transferred to your vehi-
cle. Consult this manual to
determine how this reduces the
available cargo and luggage
load capacity of your vehicle.
( P.220) Cargo capacity
Total load capacity (vehicle
capacity weight) (
P.516)
When 2 people with the com-
bined weight of A lb. (kg) are rid-
ing in your vehicle, which has a
total load capacity (vehicle
capacity weight) of B lb. (kg),
the available amount of cargo
and luggage load capacity will
be C lb. (kg) as follows:
B
*2 lb. (kg) - A*1 lb. (kg) = C*3 lb.
(kg)
*1: A = Weight of people
*2: B = Total load capacity
*3: C = Available cargo and luggage load
In this condition, if 3 more passen-
gers with the combined weight of D
lb. (kg) get on, the available cargo
and luggage load will be reduced E
lb. (kg) as follows:
C lb. (kg) - D*4 lb. (kg) = E*5 lb.
(kg)
*4: D = Additional weight of people
*5: E = Available cargo and luggage
WARNING
■Capacity and distribution
●Do not exceed the maximum
axle weight rating or the total
vehicle weight rating.
●Even if the tota l load of occu-
pant’ weight and the cargo load
is less than the total load capac-
ity, do not ap ply the load
unevenly. Improper loading may
cause deteriorat ion of steering
or braking control which may
cause death or serious injury.
Calculation formula for
your vehicle
A
B

2204-1. Before driving
Cargo capacity
Weight of the removed sec-
ond center seat
If removing the second center
seat, it is possible to load extra
cargo equal to the weight of the
removed seat.
(Cargo capacity) = (Total load
capacity) - (Total weight of occu-
pants) + (Weight of the removed
second center seat)
Second center seat weight:
Fabric
17.76 lb. (8.06 kg)
Synthetic leather
17.89 lb. (8.12 kg)
■Total load capacity and seating
capacity
These details are also described on
the tire and loading information
label. ( P.435)
NOTICE
■When loading cargo on the
roof luggage carrier
Be careful not to scratch the sur-
face of the moon roof (if
equipped).
Seating configuration
variation (8-passenger
models only)
A
B
Vehicle load limits
Vehicle load limits include
total load capacity, seating
capacity, TWR (Trailer
Weight Rating) and cargo
capacity.
 Total load capacity (vehicle
capacity weight):  P.516
Total load capacity means the
combined weight of occu-
pants, cargo and luggage.
 Seating capacity:  P.517
Seating capacity means the
maximum number of occu-
pants whose estimated aver-
age weight is 150 lb. (68 kg)
per person.
 TWR (Trailer Weight Rat-
ing):  P.226, 516
TWR means the maximum
gross trailer weight (trailer
weight plus its cargo weight)
that your vehicle is able to
tow.
 Cargo capacity
Cargo capacity may increase
or decrease depending on the
weight and the number of
occupants.

2214-1. Before driving
4
Driving
WARNING
■Overloading the vehicle
Do not overload the vehicle. It
may not only cause damage to
the tires, but also degrade steer-
ing and braking ability, resulting in
an accident.
Trailer towing (with-
out towing package)
Toyota does not recom-
mend towing a trailer with
your vehicle. Toyota also
does not recommend the
installation of a tow hitch or
the use of a tow hitch carrier
for a wheelchair, scooter,
bicycle, etc. Your vehicle is
not designed for trailer tow-
ing or for the use of tow
hitch mounted carriers.

2224-1. Before driving
■Before towing
Check that the fo llowing conditions
are met:
●Ensure that your vehicle’s tires
are properly inflated. ( P.523)
●Trailer tires are inflated according
to the trailer manufacturer’s rec-
ommendation.
●All trailer lights work as required
by law.
●All lights work each time you con-
nect 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 th e 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 mirr ors conform to
all applicable fede ral, state/provin-
cial or local regulations. If they do
not, install rear view mirrors
appropriate for towing purposes.
■When towing a trailer
Disable the following systems, as
the systems may no t operate prop-
erly.
●LTA (Lane Tracing Assist)
(  P.278)
Trailer towing (with
towing package)
Your vehicle is designed
primarily as a passenger-
and-load-carrying vehicle.
Towing a trailer can have an
adverse impact on handling,
performance, braking, dura-
bility, and fuel consump-
tion. For 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 equip-
ment, that the towing equip-
ment has been installed
correctly and used properly,
and that you employ the
requisite driving habits.
Vehicle-trailer stability and
braking performance are
affected by trailer stability,
brake performance and set-
ting, trailer brakes, the hitch
and hitch systems (if
equipped).
To tow a trailer safely, use
extreme care and drive the
vehicle in accordance with
your trailer’s characteris-
tics and operating condi-
tions.
Toyota warranties do not
apply to damage or mal-
function caused by towing a
trailer for commercial pur-
poses.
Contact your Toyota dealer for
further information about addi-
tional requirements such as a
towing kit, etc.

2234-1. Before driving
4
Driving
●Dynamic radar cruise control with
full-speed range (P.291)
●PKSB (Parking Support Brake) (if
equipped) ( P.324)
●BSM (Blind Spot Monitor) (if
equipped) ( P.302)
●Intuitive parking assist (if
equipped) ( P.312)
●RCTA (Rear Cross Traffic Alert)
function (if equipped) ( P.308)
●RCD (Rear Camera Detection)
function (if equipped) ( P.320)
WARNING
■Trailer towing precautions
To tow a traile r safely, use
extreme care and drive the vehi-
cle in accordance with the trailer’s
characteristics and operating con-
ditions. 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.
●Vehicles without spare tire: Do
not tow a trailer when the tire
installed is re paired with the
emergency tire puncture repair
kit.
●If the gross trailer weight is over
2000 lb. (907 kg), a sway con-
trol device with sufficient capac-
ity 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 spee d 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 sur-
face, etc. to help avoid an acci-
dent. 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 jer ky, abrupt or
sharp turns.
●Do not apply the brakes sud-
denly as you may skid, resulting
in jackknifing and loss of vehicle
control. This is especially true
on wet or slippery surfaces.
●Do not exceed the trailer hitch
assembly weight, gross vehicle
weight, gross axle weight and
trailer tongue w eight capacities.
●Do not use dynamic radar
cruise control with full-speed
range when towing.
●Slow down and downshift
before descending steep or long
downhill grades. Do not make
sudden downshifts while
descending steep or long down-
hill grades.

2244-1. Before driving
■GCWR (Gross Combination
Weight Rating)
The maximum allowable gross
combination weight. The gross
combination weight is the sum
of the total vehicle weight
(including the occupants, cargo
and any optional equipment
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
vehicle weight. The gross vehi-
cle weight is the total weight of
the vehicle. When towing a
trailer, it is the sum of the vehi-
cle weight (including the occu-
pants, cargo and any optional
equipment installed on the vehi-
cle) and the tongue weight.
WARNING
●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 down-
hill grades. Avoid holding the
brake pedal down too long or
applying the brakes too fre-
quently. This could cause the
brakes to overheat and result in
reduced braking efficiency.
●Vehicles with compact spare
tire: Do not tow a trailer when
the compact spare tire is
installed on your vehicle.
■When towing a trailer
Toyota recommends trailers with
brakes that confor m to any appli-
cable federal and state/provincial
regulations.
●If the gross trailer weight
exceeds unbraked TWR, trailer
brakes are required. Toyota rec-
ommends trailers with brakes
that conform to all applicable
federal and state/provincial reg-
ulations.
●Never tap into y our vehicle’s
hydraulic system, as this will
lower the vehicle’s braking
effectiveness.
●Never tow a trailer without using
a safety chain securely attached
to both the traile r and the vehi-
cle. If damage occurs to the
coupling unit or hitch ball, there
is danger of the trailer wander-
ing into another lane.
Towing related terms

2254-1. Before driving
4
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).
Front GAWR
Rear GAWR
■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, hitch and hitch systems (if required).
Additional optional equipment, pas-
sengers and cargo in the vehicle
will reduce the trailer weight rating
so as not to exceed GCWR, GVWR
and GAWR.
If the gross traile
r weight exceeds
3000 lb. (1360 kg ), it is recom-
mended to use a trailer with 2 or
more axles.
(With brakes)
■Unbraked TWR (Unbraked
Trailer Weight Rating)
The trailer weight rating for tow-
ing a trailer without a trailer ser-
vice brake system.
(Without brakes)
■Tongue Weight
The load placed on the trailer
hitch ball. ( P.227)
A
B
A
A