2023 TOYOTA SIENNA HYBRID Owners Manual

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.

4486-3. Do-it-yourself maintenance
Check the wattage of the light
bulb to be replaced. ( P.524)
Rear turn signal lights
Back-up lights
License plate lights
■Lights that need to be
replaced by your Toyota
dealer
 Headlights 
Daytime running lights
 Front turn signal/parking
lights
 Front side marker lights
 Side turn signal lights
 Tail lights
 Stop lights
 Fog lights (if equipped)
 Rear side marker lights
 High mounted stoplight
 Outer foot lights (if equipped)
■LED lights
The lights other than the following
lights each consist of a number of
LEDs. If any of t he LEDs burn out,
take your vehicle to your Toyota
dealer to have the light replaced.
●Rear turn signal lights
●Back-up lights
●License plate lights
■Condensation build-up on the
inside of the lens
Temporary condensation build-up
on the inside of the light lens does
not indicate a mal function. Contact
your Toyota dealer for more infor-
mation in the following situations:
●Large drops of water have built up
on the inside of the lens.
●Water has built up inside the light.
■When replacing light bulbs
 P.447
■Rear turn signal lights
1 Open the back door.
Light bulbs
You may replace the follow-
ing bulbs by yourself. The
difficulty level of replace-
ment varies depending on
the bulb. If necessary bulb
replacement seems difficult
to perform, contact your
Toyota dealer.
For more information about
replacing other light bulbs,
contact your Toyota dealer.
Preparing for light bulb
replacement
Bulb location
A
B
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KWEXOE

4496-3. Do-it-yourself maintenance
6
Maintenance and care
2Remove the securing screws
and remove the unit.
Remove the lamp assembly by pull-
ing it directly backward from the
rear of the vehicle.
3Turn the bulb base counter-
clockwise.
4 Remove the light bulb. 5
Install a new light bulb.
6 Install the bulb base to the
light unit by inserting it and
turning the bulb base clock-
wise.
7 Align the grooves on the light
unit with the claws, and insert
the light unit straight so that
the pin on the light unit fit into
the hole.
Confirm that the light unit is com-

4506-3. Do-it-yourself maintenance
pletely secured.
8Reinstall the screws.
■Back-up lights
1 Open the back door and
remove the cover.
To prevent damag e to the cover,
wrap the tip of the screwdriver with
a rag, etc.
2 Turn the bulb base counter-
clockwise.
3 Remove the light bulb.
4 Install a new light bulb.
5 Install the bulb base to the
light unit by inserting it and

4516-3. Do-it-yourself maintenance
6
Maintenance and care
turning the bulb base clock-
wise.
6 Reinstall the cover.
■License plate lights
1 Remove the cover.
Using a flathead screwdriver,
remove the cover.
To prevent damage to the vehicle,
wrap the tip of the flathead screw-
driver with tape, etc.
2 Remove the lens.
Lens
Hook
1 Insert a small flathead screw-
driver, etc. into either the
right or left hole of the lens.
2 Push the screwdriver side-
ways in the direction of the
arrow shown in the illustra-
tion, disengage the hook, and
then remove the lens.
To prevent damage to the vehicle,
wrap the tip of th e screwdriver with
tape, etc.
A
B

4526-3. Do-it-yourself maintenance
3Remove the light bulb.
4 Install a new light bulb.
5 Install the lens.
Hooks
1 Fit the lens into either the right or left hooks.
2 Push the lens into place.
After installation, confirm that the
lens is properly installed by gently
pulling it.
6Install the cover.
A
WARNING
■Replacing light bulb
●Turn off the light. Do not attempt
to replace the bu lb immediately
after turning off the light.
The bulb becomes very hot and
may cause burns.
●Do not touch the glass portion
of the light bulb with bare
hands. When it is unavoidable
to hold the glass portion, use
and hold with a clean dry cloth
to avoid getting moisture and
oils on the bulb.
Also, if the bulb is scratched or
dropped, it may blow out or
crack.
●Fully install light bulb and any
parts used to secure it. Failure
to do so may result in heat dam-
age, fire, or water entering the
light unit. This may damage the
light or cause condensation to
build up on the lens.

4536-3. Do-it-yourself maintenance
6
Maintenance and care
WARNING
●Do not attempt to repair or dis-
assemble light bulbs, connec-
tors, electric circuits or
component parts.
Doing so may result in death or
serious injury due to electric
shock.
■To prevent damage or fire
●Make sure bulb is fully seated
and locked.
●Check the wattage of the bulb
before installing to prevent heat
damage.

4546-3. Do-it-yourself maintenance