Toyota Sienna (2019 year). Instruction - part 30

Wh
en tro

If your vehicle needs to be towed

The following may indicate a problem with your transaxle. Contact
your Toyota dealer or commercial towing service before towing.

The engine is running but the vehicle does not move.

The vehicle makes an abnormal sound.

Do not tow with a sling-type truck
to prevent body damage.

If  towing  is  necessary,  we  recommend  having  your  vehicle
towed  by  your  Toyota  dealer  or  commercial  towing  service,
using a wheel-lift type truck or flat bed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws.
2WD models: If towing your vehicle with a wheel-lift type truck
from  the  front,  the  vehicle’s  rear  wheels  and  axles  must  be  in
good conditions. (

P. 466, 467)

If they are damaged, use a towing dolly or flat bed truck.
AWD models: If towing your vehicle with a wheel-lift type truck,
use a towing dolly. (

P. 466, 467)

Situations when it is necessary to contact dealers before towing

Towing with a sling-type truck

466

SIENNA_OM_OM08025U_(U)

If you use chains or cables to tie
down your vehicle, the angles
shaded in black must be 45

.

Do not overly tighten the tie
downs or the vehicle may be dam-
aged.

Towing with a wheel-lift type truck



From the front (2WD models)



From the front (AWD models)

Release the parking brake.

Use a towing dolly under the rear
wheels.



From the rear

Use a towing dolly under the front
wheels.

Using a flatbed truck

467

SIENNA_OM_OM08025U_(U)

Wh
en tro

WARNING

Observe the following precautions.
Failure to do so may result in death or serious injury.

When towing the vehicle

While towing
Do not turn the engine switch to the “LOCK” position (vehicles without a
smart key system) or off (vehicles with a smart key system).
There is a possibility that the steering wheel is locked and cannot be oper-
ated.

2WD  models:  Be  sure  to  transport  the
vehicle  with  the  front  wheels  raised  or
with all four wheels raised off the ground.
If  the  vehicle  is  towed  with  the  front
wheels contacting the ground, the drive-
train and related parts may be damaged.

AWD  models:  Be  sure  to  transport  the
vehicle with all four wheels raised off the
ground.  If  the  vehicle  is  towed  with  the
tires contacting the ground, the drivetrain
or  related  parts  may  be  damaged,  the
vehicle may fly off the truck.

468

SIENNA_OM_OM08025U_(U)

NOTICE

To prevent damage to the vehicle when towing using a wheel-lift type
truck
When raising the vehicle, ensure adequate ground clearance for towing at
the opposite end of the raised vehicle. Without adequate clearance, the
vehicle could be damaged while being towed.

To prevent damage to the vehicle when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.

Recreational towing (behind motor home, etc.)

Never dinghy tow your vehicle to prevent
causing serious damage to the Active
Torque Control 4WD system (AWD mod-
els) and transaxle. (

P. 224)

469

SIENNA_OM_OM08025U_(U)

Wh
en tro

If you think something is wrong

Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)

Flat-looking tires or uneven tire wear

Engine coolant temperature gauge needle continually points higher
than normal

Changes in exhaust sound

Excessive tire squeal when cornering

Strange noises related to the suspension system

Pinging or other noises related to the engine

Engine missing, stumbling or running rough

Appreciable loss of power

Vehicle pulls heavily to one side when braking

Vehicle pulls heavily to one side when driving on a level road

Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor

If you notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.

Visible symptoms

Audible symptoms

Operational symptoms

470

SIENNA_OM_OM08025U_(U)

Fuel pump shut off system

Follow the procedure below to restart the engine after the system is
activated.



Vehicles without a smart key system
Turn the engine switch to the “ACC” or “LOCK” position.
Restart the engine.



Vehicles with a smart key system
Turn the engine switch to ACCESSORY mode or turn it off.
Restart the engine.

To minimize the risk of fuel leakage when the engine stalls or
when an airbag inflates upon collision, the fuel pump shut off
system stops the supply of fuel to the engine.

NOTICE

Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the ground, the fuel system has been
damaged and is in need of repair. Do not restart the engine.

471

SIENNA_OM_OM08025U_(U)

Wh
en tro

If a warning light turns on or a warning

buzzer sounds

Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.

Warning light and warning buzzer list

Warning light

Warning light/Details/Actions

(U.S.A.)

(Canada)

Brake system warning light (warning buzzer)

Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning

This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is
fully released the system is operating normally.

 Immediately stop the vehicle in a safe place and con-

tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.

Charging system warning light

Indicates a malfunction in the vehicle’s charging system

 Immediately stop the vehicle in a safe place and con-

tact your Toyota dealer.

Low engine oil pressure warning light

Indicates that the engine oil pressure is too low

 Immediately stop the vehicle in a safe place and con-

tact your Toyota dealer.

(U.S.A.)

(Canada)

Malfunction indicator lamp

Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transaxle control system

 Have the vehicle inspected by your Toyota dealer

immediately.

472

SIENNA_OM_OM08025U_(U)

SRS warning light

Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system

 Have the vehicle inspected by your Toyota dealer

immediately.

(U.S.A.)

(Canada)

ABS warning light

Indicates a malfunction in:
• The ABS; or
• The brake assist system

 Have the vehicle inspected by your Toyota dealer

immediately.

Electric power steering system warning light (warning
buzzer)

Indicates a malfunction in the EPS (Electric Power
Steering) system

 Have the vehicle inspected by your Toyota dealer

immediately.

(Flashes or

illuminates)

PCS warning light

Indicates a malfunction in the PCS (Pre-Collision System)
or that the system is temporarily unavailable due to the
vehicle being extremely hot/cold, or dirt around a front
sensor, etc. (

P. 278, 481 )

 Follow the instructions displayed on the multi-infor-

mation display. (

P. 278, 481)

If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.

 P. 278

(Amber)

LDA indicator

Indicates a malfunction in the LDA (Lane Departure Alert
with steering control)

 When “Lane Departure Alert Unavailable” is dis-

played on the multi-information display, turn the LDA
system off, drive the vehicle for a short time, and
then turn the LDA system back on. (

P. 282)

When a message other than above is displayed, fol-
low the instructions displayed in the message.

Warning light

Warning light/Details/Actions

473

SIENNA_OM_OM08025U_(U)

Wh
en tro

Slip indicator

Indicates a malfunction in:
• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system; or
• The hill-start assist control system
The light will flash when the VSC or the TRAC system is
operating.

 Have the vehicle inspected by your Toyota dealer

immediately.

Low fuel level warning light

Indicates that remaining fuel is approximately 3.0 gal.
(11.4 L, 2.5 Imp.gal.) or less

 Refuel the vehicle.

Seat belt reminder light (warning buzzer)

Warns the driver and/or front passenger to fasten their
seat belts

 Fasten the seat belt.

If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.

Low engine oil level warning light

Indicates that engine oil level is low (This warning light
may come on if the vehicle is stopped on a slope. Move
the vehicle to a level surface and check to see if the light
goes off.)

 Check the level of engine oil and add more oil if nec-

essary.

Master warning light

A buzzer sounds and the warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.

 P. 481

Warning light

Warning light/Details/Actions

474

SIENNA_OM_OM08025U_(U)

Tire pressure warning light

When the light comes on:

Low tire inflation pressure such as

• Natural causes (

P. 476)

• Flat tire (

P. 485 , 499)

 Adjust the tire inflation pressure to the specified

level.

The light will turn off after a few minutes. In case

the light does not turn off even if the tire inflation

pressure is adjusted, have the system checked by

your Toyota dealer.

When the light comes on after blinking for 1 minute:

Malfunction in the tire pressure warning system

(

P. 477)

 Have the system checked by your Toyota dealer.

Low windshield washer fluid level warning light

Indicates that the windshield washer fluid level is too

low.

 Add washer fluid.

Third seat warning light

Indicates that the third seat operation is not yet complete.

 Complete the third seat operation (P. 159)

Brake Override System warning light

Indicates that the accelerator and brake pedals are being
depressed simultaneously, and the Brake Override Sys-
tem is operating.

 Release the accelerator pedal and depress the brake

pedal.

Indicates a malfunction in the Brake Override System
(with warning buzzer)

 Have the vehicle inspected by your Toyota dealer

immediately.

High coolant temperature warning light (warning
buzzer)

Changes from a flashing to a solid light when the engine
coolant temperature increases

 Stop and check. (P. 509)

Warning light

Warning light/Details/Actions

475

SIENNA_OM_OM08025U_(U)

Wh
en tro

: Parking brake engaged warning buzzer:

Indicates that the vehicle is being driven at 5 km/h (3 mph) or more with
the parking brake still engaged

: This light illuminates on the multi-information display.

: Driver’s seat belt buzzer:

The driver’s seat belt buzzer sounds to alert the driver that his or her seat
belt is not fastened. Once the engine switch is turned to the “ON” position
(vehicles without a smart key system) or IGNITION ON mode (vehicles
with a smart key system), the buzzer sounds for 6 seconds. If the vehicle
reaches  a  speed  of  12  mph  (20  km/h),  the  buzzer  sounds  once.  If  the
seat belt is still unfastened after 30 seconds, the buzzer will sound inter-
mittently  for  10  seconds.  Then,  if  the  seat  belt  is  still  unfastened,  the
buzzer will sound in a different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passen-
ger that his or her seat belt is not fastened. The buzzer sounds once if the
vehicle reaches a speed of 12 mph (20 km/h). If the seat belt is still unfas-
tened  after  30 seconds,  the  buzzer  will  sound  intermittently  for  10 sec-
onds. Then, if the seat belt is still unfastened, the buzzer will sound in a
different tone for 20 more seconds.

: If equipped

476

SIENNA_OM_OM08025U_(U)

SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (rear), driver’s
seat position sensor, driver’s seat belt buckle switch, front passenger occu-
pant classification system (ECU and sensors), “AIR BAG ON” indicator light,
“AIR BAG OFF” indicator light, front passenger’s seat belt buckle switch, seat
belt assemblies, airbags, interconnecting wiring and power sources. (

P. 38)

Front passenger detection sensor, seat belt reminder and warning
buzzer

If luggage is placed on the front passenger seat, the front passenger detec-
tion sensor may cause the warning light to flash and the warning buzzer to
sound even if a passenger is not sitting in the seat.

If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.

If the malfunction indicator lamp comes on while driving
First check the following:

Is the fuel tank empty?
If it is, fill the fuel tank immediately.

Is the fuel tank cap loose?
If it is, tighten it securely.

The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.

Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the
warning buzzer may sound.

When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Push-

ing the tire pressure warning reset switch will not turn off the tire pressure

warning light.

The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such

as natural air leaks and tire inflation pressure changes caused by tem-

perature. In this case, adjusting the tire inflation pressure will turn off the

warning light (after a few minutes).

477

SIENNA_OM_OM08025U_(U)

Wh
en tro

When a tire is replaced with a spare tire (vehicles with compact spare

tire)
The compact spare tire is not equipped with a tire pressure warning valve

and transmitter. If a tire goes flat, the tire pressure warning light will not

turn off even though the flat tire has been replaced with the spare tire.

Replace the spare tire with the repaired tire and adjust the tire inflation

pressure. The tire pressure warning light will go off after a few minutes.

Conditions that the tire pressure warning system may not function

properly
P. 425

If the tire pressure warning light frequently comes on after blinking

for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1

minute when the engine switch is turned to the “ON” position (vehicles

without a smart key system) or IGNITION ON mode (vehicles with a

smart key system), have it checked by your Toyota dealer.

Customization that can be configured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features

P. 547) However, Toyota recommends that the seat

belt reminder buzzer be operational to alert the driver and front passenger
when seat belts are not fastened.

Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.

478

SIENNA_OM_OM08025U_(U)

WARNING

If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Toyota
dealer. The vehicle will become extremely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.

When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
When steering wheel operations are heavier than usual, grip the steering
wheel firmly and operate it using more force than usual.

If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could

cause a loss of vehicle control and result in death or serious injury.
Vehicles with standard tires:

Stop your vehicle in a safe place as soon as possible. Adjust the tire

inflation pressure immediately.

If the tire pressure warning light comes on even after tire inflation pres-

sure adjustment, it is probable that you have a flat tire. Check the tires.

If a tire is flat, change it with the spare tire and have the flat tire

repaired by the nearest Toyota dealer.

Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,

you could lose control of the steering wheel or the brakes.

Vehicles with run-flat tires:

Decelerate to the lowest appropriate speed as soon as possible. Do

not drive over 50 mph (80 km/h).

Check and adjust the tire inflation pressure immediately.

If the tire pressure warning light comes on even after tire inflation pres-

sure adjustment, it is probable that you have a flat tire. Have the tire

replaced by the nearest Toyota dealer.

Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,

you could lose control of the steering wheel or the brakes.

If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

479

SIENNA_OM_OM08025U_(U)

Wh
en tro

WARNING

Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly

when cold and inflated to the inflation pressure recommended by the

vehicle manufacturer on the vehicle placard or tire inflation pressure

label (tire and load information label). (If your vehicle has tires of a dif-

ferent size than the size indicated on the vehicle placard or tire inflation

pressure label [tire and load information label], you should determine

the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire

pressure monitoring system (TPMS-tire pressure warning system) that

illuminates a low tire pressure telltale (tire pressure warning light) when

one or more of your tires is significantly under-inflated. Accordingly,

when the low tire pressure telltale (tire pressure warning light) illumi-

nates, you should stop and check your tires as soon as possible, and

inflate them to the proper pressure. Driving on a significantly under-

inflated tire causes the tire to overheat and can lead to tire failure.

Under-inflation also reduces fuel efficiency and tire tread life, and may

affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-

stitute for proper tire maintenance, and it is the driver’s responsibility to

maintain correct tire pressure, even if under-inflation has not reached

the level to trigger illumination of the TPMS low tire pressure telltale (tire

pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warn-

ing system) malfunction indicator to indicate when the system is not

operating properly. The TPMS (tire pressure warning system) malfunc-

tion indicator is combined with the low tire pressure telltale (tire pressure

warning light). When the system detects a malfunction, the telltale will

flash for approximately one minute and then remain continuously illumi-

nated. This sequence will continue upon subsequent vehicle start-ups

as long as the malfunction exists. When the malfunction indicator is illu-

minated, the system may not be able to detect or signal low tire pres-

sure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a vari-

ety of reasons, including the installation of replacement or alternate tires

or wheels on the vehicle that prevent the TPMS (tire pressure warning

system) from functioning properly. Always check the TPMS (tire pres-

sure warning system) malfunction telltale after replacing one or more

tires or wheels on your vehicle to ensure that the replacement or alter-

nate tires and wheels allow the TPMS (tire pressure warning system) to

continue to function properly.

480