Content .. 29 30 31 32 ..

Toyota Sienna Hybrid (2023 year). Manual in english - page 31

497

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises

WARNING

●

Do not use more than one com-

pact spare tire simultaneously.

●

Replace the compact spare tire

with a standard tire as soon as

possible.

●

Avoid sudden acceleration,

abrupt steering, sudden brak-

ing and shifting operations that

cause sudden engine braking.

■

When the compact spare tire

is attached

The vehicle speed may not be

correctly detected, and the follow-

ing systems may not operate cor-

rectly:
• ABS & Brake assist

• VSC/Trailer Sway Control

• TRAC

• Dynamic radar cruise control

with full-speed range

• PCS (Pre-Collision System)

• EPS

• LTA (Lane Tracing Assist)

• Tire pressure warning system

• AHB (Automatic High Beam)

• BSM (Blind Spot Monitor) (if

equipped)

• Rear view monitor system (if

equipped)

• Panoramic view monitor (if

equipped)

• Toyota parking assist monitor (if

equipped)

• Intuitive parking assist (if

equipped)

• PKSB (Parking Support Brake)

(if equipped)

• Navigation system (if equipped)

Also, not only can the following

system not be utilized fully, but it

may actually negatively affect the

drive-train components:
• E-Four (Electronic On-Demand

AWD system) (AWD models)

■

Speed limit when using the

compact spare tire

Do not drive at speeds in excess

of 50 mph (80 km/h) when a com-

pact spare tire is installed on the

vehicle.
The compact spare tire is not

designed for driving at high

speeds. Failure to observe this

precaution may lead to an acci-

dent causing death or serious

injury.

■

After using the tools and jack

Before driving, make sure all the

tools and jack are securely in

place in their storage location to

reduce the possibility of personal

injury during a collision or sudden

braking.

NOTICE

■

Be careful when driving over

bumps with the compact

spare tire installed on the

vehicle

The vehicle height may become

lower when driving with the com-

pact spare tire compared to when

driving with standard tires. Be

careful when driving over uneven

road surfaces.

■

Driving with tire chains and

the compact spare tire

Do not fit tire chains to the com-

pact spare tire.
Tire chains may damage the vehi-

cle body and adversely affect driv-

ing performance.

498

7-2. Steps to take in an emergency

Install the spare tire and
loosely tighten each wheel
nut by hand by approximately
the same amount.

Turn the wheel nuts until the wash-
ers

come into contact with the

disc wheel

Firmly tighten each wheel nut
two or three times in the
order shown in the illustra-
tion.

Tightening torque:

36.9 ft•lbf (50 N•m, 5.1 kgf•m)

Installing the cover.

NOTICE

■

When replacing the tires

When removing or fitting the

wheels, tires or the tire pressure

warning valve and transmitter,

contact your Toyota dealer as the

tire pressure warning valve and

transmitter may be damaged if not

handled correctly.

Stowing the spare tire

WARNING

■

When stowing the compact

spare tire

Be careful not to catch fingers or

other body parts between the

compact spare tire and the body

of the vehicle.

499

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises

One of the following may be the
cause of the problem:



The electronic key may not be
functioning properly.
(



P.502)



There may not be sufficient
fuel in the vehicle’s tank.
Refuel the vehicle. (



P.262)



There may be a malfunction
in the immobilizer system.
(



P.88)



The hybrid system may be
malfunctioning due to an elec-
trical problem such as elec-
tronic key battery depletion or
a blown fuse. However,
depending on the type of mal-
function, an interim measure
is available to start the hybrid
system. (



P.499)

One of the following may be the
cause of the problem:



The 12-volt battery may be
discharged. (



P.504)



The 12-volt battery terminal
connections may be loose or
corroded. (



P.420)

One of the following may be the
cause of the problem:



The 12-volt battery may be
discharged. (



P.504)



One or both of the 12-volt bat-
tery terminals may be discon-
nected. (



P.420)

Contact your Toyota dealer if
the problem cannot be repaired,
or if repair procedures are
unknown.

When the hybrid system does
not start, the following steps can
be used as an interim measure
to start the hybrid system if the
power switch is functioning nor-

If the hybrid system

will not start

Reasons for the hybrid sys-
tem not starting vary
depending on the situation.
Check the following and
perform the appropriate
procedure:

The hybrid system will not
start even though the cor-
rect starting procedure is
being followed (



P.234)

The interior lights and
headlights are dim, or the
horn does not sound or
sounds at a low volume

The interior lights and
headlights do not turn on,
or the horn does not
sound

Starting the hybrid sys-
tem in an emergency

500

7-2. Steps to take in an emergency

mally.
Do not use this starting proce-
dure except in cases of emer-
gency.

Pull the parking brake switch
to check that the parking
brake is set. (



P.246)

Parking brake indicator will come

on.

Shift the shift lever to P.

Turn the power switch to
ACC.

Press and hold the power
switch for about 15 seconds
while depressing the brake
pedal firmly.

Even if the hybrid system can be
started using the above steps,
the system may be malfunction-
ing. Have the vehicle inspected
by your Toyota dealer.

If you lose your keys

New genuine keys can be
made by your Toyota dealer
using the other key and the
key number stamped on
your key number plate.
Keep the plate in a safe
place such as your wallet,
not in the vehicle.

NOTICE

■

When an electronic key is lost

If the electronic key remains lost,

the risk of vehicle theft increases

significantly. Visit your Toyota

dealer immediately with all

remaining electronic keys that

were provided with your vehicle.

501

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises



Vehicles without spare tire

Remove the cover of the
emergency tire puncture
repair kit. (



P.483)

Pull the lever.

Pull the lever to unlock the fuel filler

door and it will be ready to open as

usual.



Vehicles with spare tire

Fold down the third seat.
(



P.175)

Remove the cover of the
compact spare tire.

Pull the lever.

Pull the lever to unlock the fuel filler

door and it will be ready to open as

usual.

If the fuel filler door

cannot be opened

If the fuel filler door opener
switch cannot be operated,
the following procedure can
be used to open the fuel
filler door.

Opening the fuel filler
door

NOTICE

■

When opening the fuel filler

door manually

●

Do not open the fuel filler door

manually except in an emer-

gency. Fuel may overflow.

●

Using the lever to open the fuel

filler door may not allow for an

adequate reduction in fuel tank

pressure before refueling. To

prevent fuel from spilling out,

turn the cap slowly when remov-

ing it.

502

7-2. Steps to take in an emergency

■

When the electronic key does

not work properly

●

Make sure that the smart key sys-

tem has not been deactivated in

the customization setting. If it is

off, turn the function on.

(Customizable features:



P.542)

●

Check if battery-saving mode is

set. If it is set, cancel the function.

(



P.166)

Use the mechanical key
(



P.131) in order to perform the

NOTICE

●

During refueling, fuel may spill

out from the filler opening due to

air being discharged from inside

the fuel tank. Therefore, fill the

fuel tank carefully and slowly.

If the electronic key

does not operate prop-

erly

If communication between
the electronic key and vehi-
cle is interrupted (



P.166)

or the electronic key cannot
be used because the battery
is depleted, the smart key
system and wireless remote
control cannot be used. In
such cases, the doors can
be opened and the hybrid
system can be started by
following the procedure
below.

NOTICE

■

In case of a smart key system

malfunction, or other key

related problems

Take your vehicle with all the

electronic keys provided with your

vehicle to your Toyota dealer.

Locking and unlocking
the doors

503

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises

following operations.

Locks all the doors

Unlocks the door

■

Key linked functions

The opening and closing of the

power windows and moon roof can

be linked to key operation by a cus-

tomized setting at your Toyota

dealer.

Closes the windows and the
moon roof

(turn and hold)

Opens the windows and the
moon roof

(turn and hold)

: If equipped

Ensure that the shift lever is
in P and depress the brake
pedal.

Touch the electronic key to
the power switch as shown in
the illustration.

When the electronic key is

detected, a buzzer sounds and the

power switch will turn to ON.
When the smart key system is

deactivated in customization set-

ting, the power switch will turn to

ACC.

Firmly depress the brake
pedal and check that

WARNING

■

When using the mechanical

key and operating the power

windows or the moon roof (if

equipped)

Operate the power window or the

moon roof after checking to make

sure that there is no possibility of

any passenger having any of their

body parts caught in the window

or the moon roof. Also, do not

allow children to operate the

mechanical key. It is possible for

children and other passengers to

get caught in the power window or

the moon roof.

Starting the hybrid sys-
tem

504

7-2. Steps to take in an emergency

displayed on the multi-infor-
mation display.

Press the power switch
shortly and firmly.

In the event that the hybrid system

still cannot be started, contact your

Toyota dealer.

■

Stopping the hybrid system

Shift the shift lever to P, set the
parking brake and press the power
switch as you normally do when
stopping the hybrid system.

■

Replacing the key battery

As the above procedure is a tempo-

rary measure, it is recommended

that the electronic key battery be

replaced immediately when the bat-

tery is depleted. (



P.444)

■

Alarm (if equipped)

If a door is unlocked using the

mechanical key when the alarm sys-

tem is set, the alarm may be trig-

gered. (



P.89)

■

Changing power switch modes

Release the brake pedal and press
the power switch in step

above.

The hybrid system does not start
and modes will be changed each
time the switch is pressed.
(



P.237)

If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.

Vehicles with alarm: Confirm
that the electronic key is
being carried.

When connecting the jumper (or

booster) cables, depending on the

situation, the alarm may activate

and the doors locked. (



P.90)

Open the hood (



P.410) and

fuse box cover.

Push claw

and

to com-

pletely release the lock, and then lift

If the 12-volt battery is

discharged

The following procedures
may be used to start the
hybrid system if the vehi-
cle’s 12-volt battery is dis-
charged.
You can also call your
Toyota dealer or a qualified
repair shop.

Restarting the hybrid sys-
tem

505

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises

up the cover.

Open the exclusive jump
starting terminal cover.

Connect a positive jumper cable clamp to

on your vehicle and

connect the clamp on the other end of the positive cable to

the second vehicle. Then, connect a negative cable clamp to

on the second vehicle and connect the clamp at the other end of
the negative cable to

Exclusive jump starting terminal (your vehicle)

Positive (+) battery terminal (second vehicle)

Negative (-) battery terminal (second vehicle)

Solid, stationary, unpainted metallic point away from the exclu-
sive jump starting terminal and any moving parts as shown in the
illustration

Start the engine of the sec-
ond vehicle. Increase the
engine speed slightly and

maintain at that level for
approximately 5 minutes to

506

7-2. Steps to take in an emergency

recharge the 12-volt battery
of your vehicle.

Maintain the engine speed of
the second vehicle and start
the hybrid system of your
vehicle by turning the power
switch to ON.

Make sure the “READY” indi-
cator comes on. If the indica-
tor light does not come on,
contact your Toyota dealer.

Once the hybrid system has
started, remove the jumper
cables in the exact reverse
order from which they were
connected.

Close the exclusive jump
starting terminal cover, and
reinstall the fuse box cover to
its original position.

Once the hybrid system starts,
have the vehicle inspected at
your Toyota dealer as soon as
possible.

■

Starting the hybrid system

when the 12-volt battery is dis-

charged

The hybrid system cannot be

started by push-starting.

■

To prevent 12-volt battery dis-

charge

●

Turn off the headlights and the

audio system while the hybrid sys-

tem is off.

●

Turn off any unnecessary electri-

cal components when the vehicle

is running at a low speed for an

extended period, such as in heavy

traffic.

■

When the 12-volt battery is

removed or discharged

●

Information stored in the ECU is

cleared. When the 12-volt battery

is depleted, have the vehicle

inspected at your Toyota dealer.

●

Some systems may require initial-

ization. (



P.551)

■

When removing the 12-volt bat-

tery terminals

When the 12-volt battery terminals

are removed, the information stored

in the ECU is cleared. Before

removing the 12- volt battery termi-

nals, contact your Toyota dealer.

■

Charging the 12-volt battery

The electricity stored in the 12-volt

battery will discharge gradually even

when the vehicle is not in use, due

to natural discharge and the drain-

ing effects of certain electrical appli-

ances. If the vehicle is left for a long

time, the 12-volt battery may dis-

charge, and the hybrid system may

be unable to start. (The 12-volt bat-

tery recharges automatically while

the hybrid system is operating.)

■

When recharging or replacing

the 12-volt battery

●

In some cases, it may not be pos-

sible to unlock the doors using the

smart key system when the 12-

volt battery is discharged. Use the

wireless remote control or the

mechanical key to lock or unlock

the doors.

●

The hybrid system may not start

on the first attempt after reinstall-

ing the 12-volt battery. In that

case, start the hybrid system in

the same manner as when the

electronic key does not operate

properly (



P.503). This is not a

malfunction, as the hybrid system

will start normally on the second

attempt.

●

The power switch mode is memo-

rized by the vehicle. When the 12-

volt battery is reconnected, the

system will return to the mode it

507

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises

was in before the 12-volt battery

was discharged. Before discon-

necting the 12-volt battery, turn

the power switch off.

If you are unsure what mode the

power switch was in before the

12-volt battery discharged, be

especially careful when recon-

necting the 12-volt battery.

■

When replacing the 12-volt bat-

tery

●

Use a 12-volt battery that con-

forms to European regulations.

Use a battery that the case size is

same as the previous one (LN2),

20 hours rate capacity (20HR) is

equivalent (60Ah) or greater, and

performance rating (CCA) is

equivalent (563A) or greater.

• If the sizes differ, the 12-volt bat-

tery cannot be properly secured.

• If the 20 hour rate capacity is low,

even if the time period where the

vehicle is not used is a short time,

the 12-volt battery may discharge

and hybrid system may not be

able to start.

●

Use a 12-volt battery with a han-

dle. If a 12-volt battery without a

handle is used, removal is more

difficult.

●

When removing the 12-volt bat-

tery:



P.420

●

After exchanging, firmly attach the

following items to the exhaust hole

of the 12-volt battery.

• Use the exhaust hose that was

attached to the 12-volt battery

before exchanging and confirm

that it is firmly connected to the

hole section of the vehicle.

• Use the exhaust hole plug

included with the 12-volt battery

exchanged or the one installed on

the battery prior to the exchange.

(Depending on the 12-volt battery

to be exchanged, the exhaust hole

may be plugged.)

For details, consult your Toyota
dealer.

Exhaust hole

Exhaust hose

Hole section of the vehicle

WARNING

■

When removing the battery

terminals

Always remove the negative (-)

terminal first. If the positive (+) ter-

minal contacts any metal in the

surrounding area when the posi-

tive (+) terminal is removed, a

spark may occur, leading to a fire

in addition to electrical shocks

and death or serious injury.

■

Avoiding 12-volt battery fires

or explosions

Observe the following precautions

to prevent accidentally igniting the

flammable gas that may be emit-

ted from the 12-volt battery:

●

Make sure each jumper cable is

connected to the correct termi-

nal and that it is not unintention-

ally in contact with any other

than the intended terminal.

●

Do not allow the other end of

the jumper cable connected to

the “+” terminal to come into

contact with any other parts or

metal surfaces in the area, such

as brackets or unpainted metal.

●

Do not allow the + and - clamps

of the jumper cables to come

into contact with each other.

B A

508

7-2. Steps to take in an emergency

WARNING

●

Do not smoke, use matches,

cigarette lighters or allow open

flame near the 12-volt battery.

■

12-volt battery precautions

The 12-volt battery contains poi-

sonous and corrosive acidic elec-

trolyte, while related parts contain

lead and lead compounds.

Observe the following precautions

when handling the 12-volt battery:

●

When working with the 12-volt

battery, always wear safety

glasses and take care not to

allow any battery fluids (acid) to

come into contact with skin,

clothing or the vehicle body.

●

Do not lean over the 12-volt bat-

tery.

●

In the event that battery fluid

comes into contact with the skin

or eyes, immediately wash the

affected area with water and

seek medical attention.

Place a wet sponge or cloth

over the affected area until

medical attention can be

received.

●

Always wash your hands after

handling the 12-volt battery sup-

port, terminals, and other bat-

tery-related parts.

●

Do not allow children near the

12-volt battery.

■

After recharging the 12-volt

battery

Have the 12-volt battery

inspected at your Toyota dealer

as soon as possible.

If the 12-volt battery is deteriorat-

ing, continued use may cause the

12-volt battery to emit a malodor-

ous gas, which may be detrimen-

tal to the health of passengers.

■

When replacing the 12-volt

battery

●

For information regarding 12-

volt battery replacement, con-

tact your Toyota dealer.

●

After exchanging, securely

attach the exhaust hose and

exhaust hole plug to the

exhaust hole of the exchanged

12-volt battery. If not properly

installed, gases (hydrogen) may

leak into the vehicle interior, and

there is the possible danger of

the gas igniting and exploding.

NOTICE

■

When handling jumper cables

When connecting the jumper

cables, ensure that they do not

become entangled in the cooling

fan, etc.

■

To prevent damaging the

vehicle

The exclusive jump starting termi-

nal is to be used when charging

the 12-volt battery from another

vehicle in an emergency. It cannot

be used to jump start another

vehicle.

509

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises

■

If the engine coolant tem-
perature gauge enters the
red zone or “Engine Cool-
ant Temp High Stop in a
Safe Place See Owner’s
Manual” is shown on the
multi-information display

Stop the vehicle in a safe
place and turn off the air con-
ditioning system, and then
stop the hybrid system.

If you see steam:
Carefully lift the hood after
the steam subsides.
If you do not see steam:
Carefully lift the hood.

After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.

Radiator

Cooling fan

If a large amount of coolant leaks,

immediately contact your Toyota

dealer.

The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.

Reservoir

“FULL” line

If your vehicle over-

heats

The following may indicate
that your vehicle is over-
heating.



The needle of the engine
coolant temperature gauge
(



P.97, 101) enters the red

zone, or a loss of hybrid
system power is experi-
enced. (For example, the
vehicle speed does not
increase.)



“Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” or “Hybrid
System Overheated Output
Power Reduced” is shown
on the multi-information dis-
play.



Steam comes out from
under the hood.

Correction procedures

510

7-2. Steps to take in an emergency

“LOW” line

Add coolant if necessary.

Water can be used in an emer-

gency if engine coolant is unavail-

able.

Start the hybrid system and
turn the air conditioning sys-
tem on to check that the radi-
ator cooling fan operates and
to check for coolant leaks
from the radiator or hoses.

The fan operates when the air con-

ditioning system is turned on imme-

diately after a cold start. Confirm

that the fan is operating by check-

ing the fan sound and air flow. If it is

difficult to check these, turn the air

conditioning system on and off

repeatedly. (The fan may not oper-

ate in freezing temperatures.)

If the fan is not operating:
Stop the hybrid system
immediately and contact your
Toyota dealer.
If the fan is operating:
Have the vehicle inspected at
the nearest Toyota dealer.

Check if “Engine Coolant
Temp High Stop in a Safe
Place See Owner’s Manual”
is shown on the multi-infor-
mation display.

If the message does not disappear:

Stop the hybrid system and contact

your Toyota dealer.
If the message is not displayed:

Have the vehicle inspected at the

nearest Toyota dealer.

■

If “Hybrid System Over-
heated Output Power
Reduced” is shown on the
multi-information display

Stop the vehicle in a safe
place.

Stop the hybrid system and
carefully lift the hood.

After the hybrid system has
cooled down, inspect the
hoses and radiator core (radi-
ator) for any leaks.

Radiator

Cooling fan

If a large amount of coolant leaks,

immediately contact your Toyota

dealer.

The coolant level is satisfac-
tory if it is between the

511

7-2. Steps to take in an emergency

Whe

n tr

ouble

rises

“FULL” and “LOW” lines on
the reservoir.

Reservoir

“FULL” line

“LOW” line

Add coolant if necessary.

Water can be used in an emer-

gency if power control unit coolant

is unavailable.

After stopping the hybrid sys-
tem and waiting for 5 minutes
or more, start the hybrid sys-
tem again and check for the
multi-information display.

If the message does not disappear:

Stop the hybrid system and contact

your Toyota dealer.
If the message is not displayed:

The hybrid system temperature has

dropped and the vehicle may be

driven normally.
However, if the message appears

again frequently, contact your

Toyota dealer.

WARNING

■

When inspecting under the

hood of your vehicle

Observe the following precau-

tions.

Failure to do so may result in seri-

ous injury such as burns.

●

If steam is seen coming from

under the hood, do not open the

hood until the steam has sub-

sided. The engine compart-

ment may be very hot.

●

After the hybrid system has

been turned off, check that the

“READY” indicator is off.

When the hybrid system is oper-

ating, the gasoline engine may

automatically start, or the cool-

ing fan may suddenly operate

even if the gasoline engine

stops. Do not touch or approach

rotating parts such as the fan,

which may lead to fingers or

clothing (especially a tie, a scarf

or a muffler) getting caught,

resulting in serious injury.

●

Do not loosen the coolant reser-

voir cap while the hybrid system

and radiator are hot.

High temperature steam or

coolant could spray out.

NOTICE

■

When adding engine/power

control unit coolant

Add coolant slowly after the

hybrid system has cooled down

sufficiently. Adding cool coolant to

a hot hybrid system too quickly

can cause damage to the hybrid

system.

512

7-2. Steps to take in an emergency

Stop the hybrid system. Set
the parking brake and shift
the shift lever to P.

Remove the mud, snow or
sand from around the stuck
tire.

Place wood, stones or some
other material to help provide
traction under the tires.

Restart the hybrid system

Shift the shift lever to D or R
and release the parking
brake. Then, while exercising
caution, depress the acceler-
ator pedal.

■

When it is difficult to free the

vehicle

Press

to turn off TRAC.

(



P.337)

NOTICE

■

To prevent damage to the

cooling system

Observe the following precau-

tions:

●

Avoid contaminating the coolant

with foreign matter (such as

sand or dust, etc.).

●

Do not use any coolant additive.

If the vehicle becomes

stuck

Carry out the following pro-
cedures if the tires spin or
the vehicle becomes stuck
in mud, dirt or snow:

Recovering procedure

Content .. 29 30 31 32 ..