fuse TOYOTA SIENNA HYBRID 2023 Owners Manual

4TABLE OF CONTENTS
5-3. Using the storage featuresList of storage features . 366
Luggage compartment fea- tures ............................ 372
5-4. Using the other interior fea- tures
Other interior features ... 374
Garage door opener...... 388
6-1. Maintenance and care Cleaning and protecting the vehicle exterior ............ 396
Cleaning and protecting the vehicle interior ............. 399
6-2. Maintenance Maintenance requirements.................................... 402
General maintenance.... 404
Emission inspection and maintenance (I/M) pro-
grams .......................... 406
6-3. Do-it-yourself maintenance Do-it-yourself service pre-cautions ....................... 408
Hood ............................. 410
Positioning a floor jack .. 412
Engine compartment ..... 413
12-volt battery ............... 419
Tires .............................. 421
Tire inflation pressure ... 435
Wheels ......... .................437
Air conditioning filter ...... 438
Cleaning the hybrid battery (traction battery) air intake
vents............................ 440Electronic key battery ....
444
Checking and replacing fuses ............................ 446
Light bulbs ..................... 448
7-1. Essential information Emergency flashers....... 456
If your vehicle has to be stopped in an emergency.................................... 457
If the vehicle is submerged or water on the road is rising.................................... 458
7-2. Steps to take in an emer- gency
If your vehicle needs to be towed ........................... 460
If you think something is wrong........................... 463
If a warning light turns on or a warning buzzer sounds
.................................... 464
If a warning message is dis- played .......................... 475
If you have a flat tire (vehi- cles without spare tire)480
If you have a flat tire (vehi- cles with spare tire) ..... 490
If the hybrid system will not start ............................. 499
If you lose your keys...... 500
If the fuel fille r door cannot
be opened ................... 50
1
I f th

e electronic key does not
operate properly .......... 502
6Maintenance and care
7When trouble arises

3755-4. Using the other interior features
5
Interior features
Please use as a power supply
for electronic devices that use
less than 120 VAC (power con-
sumption of 1500 W).
■Using the power outlets
Rear of console box
Open the lid.
Luggage compartment
Open the lid.
■When turning the power
outlets on
1 Check that the parking brake
is engaged, and press the
power switch while depress-
ing the brake pedal.
2 Check that the READY indi-
cator is illuminated, and
press the AC120V switch.
The power outlets can be used
when the indicator on the AC120V
switch is illuminated.
The power outlets are turned off/on
each time the AC120V switch is
pressed.
■When connecting a device
Open the lid, and fully and
securely insert the plug of the
device into the power outlet.
NOTICE
■When power outlet is not in
use
To avoid damaging the power out-
let, close the p ower outlet lid
when the power outlet is not in
use.
Foreign objects or liquids that
enter the power outlet may cause
a short circuit.
■To prevent blown fuse
Do not use an accessory that
uses more than 12 V 10 A.
■To prevent 12-volt battery dis-
charge
Do not use the power outlet lon-
ger than necessary when the
hybrid system is off.
Power outlets (120 VAC)
(if equipped)

395
6
6
Maintenance and care
Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 396
Cleaning and protecting the vehicle interior ........... 399
6-2. Maintenance Maintenance requirements.................................. 402
General maintenance.. 404
Emission inspection and maintenance (I/M) pro-
grams ........................ 406
6-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 408
Hood ........................... 410
Positioning a floor jack 412
Engine compartment ... 413
12-volt battery ............. 419
Tires ............................ 421
Tire inflation pressure . 435
Wheels ......... ...............437
Air conditioning filter .... 438
Cleaning the hybrid battery (traction battery) air intake
vents.......................... 440
Electronic key battery.. 444
Checking and replacing fuses.......................... 446
Light bulbs................... 448

4086-3. Do-it-yourself maintenance
6-3.Do-it-yourself maintenance
Do-it-yourself service
precautions
If you perform maintenance
by yourself, be sure to fol-
low the correct procedure
as given in these sections.
Maintenance
ItemsParts and tools
12-volt bat-
tery condi-
tion
( P.419)•Grease
• Conventional
wrench (for termi-
nal clamp bolts)
Brake fluid
level
( P.417)
• FMVSS No.116
DOT 3 or SAE
J1703 brake fluid
• FMVSS No.116 DOT 4 or SAE
J1704 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake
fluid)
Engine/power
control unit
coolant level
( P.416)
• “Toyota Super
Long Life Cool-
ant” or a similar
high quality eth-
ylene glycol-based
non-silicate, non-
amine, non-nitrite
and non-borate
coolant with long-
life hybrid organic
acid technology
For the U.S.A.:
“Toyota Super
Long Life Cool-
ant” is pre-mixed
with 50% coolant
and 50% deion-
ized water.
For Canada:
“Toyota Super
Long Life Cool-
ant” is pre-mixed
with 55% coolant
and 45% deion-
ized water.
• Funnel (used only for adding coolant)
Engine oil
level
( P.413)
• “Toyota Genuine
Motor Oil” or
equivalent
• Rag or paper towel
• Funnel (used only for adding engine
oil)
Fuses
( P.446)• Fuse with same
amperage rating
as original
ItemsParts and tools

4136-3. Do-it-yourself maintenance
6
Maintenance and care
Fuse box (P.446)
Engine oil filler cap ( P.414)
Engine oil level dipstick ( P.413)
Brake fluid reservoir ( P.417)
Radiator ( P.417)
Electric cooling fan
Condenser ( P.417)
Power control unit coolant reservoir ( P.416)
Washer fluid tank ( P.418)
Engine coolant reservoir ( P.416)
■12-volt battery
 P.419
With the engine at operating
temperature and turned off,
Engine compartment
Components
A
B
C
D
E
F
G
H
I
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HQJLQHRLO

4466-3. Do-it-yourself maintenance
1Turn the power switch off.
2 Open the fuse box cover.
Engine compartment
Push claw , and to com-
pletely release the lock, and then lift
up the cover.
Left side instrument panel
Remove the lid.
Right side luggage compart-
ment
Remove the cover
3Remove the fuse.
Only type A fuse c an be removed
using the pullout tool.
4 Check if the fuse is blown.
Replace the blown fuse with a new
fuse of an appropriate amperage
rating. The amperage rating can be
found on the fuse box lid.
Type A
Normal fuse
Checking and replac-
ing fuses
If any of the electrical com-
ponents do not operate, a
fuse may have blown. If this
happens, check and replace
the fuses as necessary.
Checking and replacing
fuses
ABC
A

4476-3. Do-it-yourself maintenance
6
Maintenance and care
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure
that the tab is installed securely.
●If the lights do n ot turn on even
after the fuse has been replaced,
a bulb may need replacement.
(  P.448)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an overload in a cir-
cuit
The fuses are designed to blow,
protecting the wiring harness from damage.
■When replacing light bulbs
Toyota recommends that you use
genuine Toyota products designed
for this vehicle. Because certain
bulbs are connected to circuits
designed to prevent overload, non-
genuine parts or parts not designed
for this vehicle may be unusable.
B
A
B
A
B
WARNING
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age to the vehicle, and possibly a
fire or injury.
●Never use a fuse of a higher
amperage rating than that indi-
cated, or use any other object in
place of a fuse.
●Always use a genuine Toyota
fuse or equivalent.
Never replace a fuse with a
wire, even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.
■To prevent damage to the
engine compartment fuse box
cover
When opening the fuse box, com-
pletely release the claw locks
before lifting up the cover. Other-
wise, the claws may be damaged.

4997-2. Steps to take in an emergency
7
When trouble arises
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

5047-2. Steps to take in an emergency
displayed on the multi-infor-
mation display.
4 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 no rmally do when
stopping the hybrid system.
■Replacing the key battery
As the above proc edure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediate ly 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 3 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.
1 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)
2 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
ABC

5067-2. Steps to take in an emergency
recharge the 12-volt battery
of your vehicle.
6 Maintain the engine speed of
the second vehicle and start
the hybrid system of your
vehicle by turning the power
switch to ON.
7 Make sure the “READY” indi-
cator comes on. If the indica-
tor light does not come on,
contact your Toyota dealer.
8 Once the hybrid system has
started, remove the jumper
cables in the exact reverse
order from which they were
connected.
9 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-vol t battery dis-
charge
●Turn off the headlights and the
audio system while the hybrid sys-
tem is off.
●Turn off any unnec essary 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 you r 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 discha rge gradually even
when the vehicle i s not in use, due
to natural dischar ge 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 c ontrol or the
mechanical key to lock or unlock
the doors.
●The hybrid syste m may not start
on the first attemp t 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