Toyota Prius Plug-in Hybrid (2023 year). Manual in english - page 38

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7-3. Do-it-yourself maintenance

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Wiper blade and wiper insert handling

Improper handling may result in damage to the wiper blades or wiper insert. If
you have any concerns about replacing the wiper blades or wiper insert your-
self, contact any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer.

■

Wiper blade cap

The cap cannot be removed, as it is integrated with the front wiper blade.

NOTICE

■

To prevent damage

●

Be careful not to damage the claws when replacing the wipers.

●

After the wiper blade is removed from the wiper arm, place a cloth, etc.,
between the windshield and wiper arm to prevent damage to the wind-
shield.

●

Be sure not to pull excessively on the wiper insert.

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7-3. Do-it-yourself maintenance

Electronic key battery

●

Flathead screwdriver

●

Lithium battery CR2032

Release the lock and take out
the mechanical key.

Remove the cover.

Use a screwdriver of an appropri-
ate size. Forcedly prying may
cause the cover damaged.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.

Replace the battery with a new one if it is depleted.

You will need the following items:

Replacing the battery

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7-3. Do-it-yourself maintenance

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Remove the depleted battery.

When removing the cover, if the
battery cannot be seen due to the
electronic key module attaching to
the upper cover, remove the elec-
tronic key module from the cover
so that the battery is visible as
shown in the illustration.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” terminal facing up.

When installing, reverse the steps listed.

■

Use a CR2032 lithium battery

●

Batteries can be purchased at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, local electrical appliance shops
or camera stores.

●

Replace only with the same or equivalent type recommended by the manu-
facturer.

●

Dispose of used batteries according to the local laws.

■

If the electronic key battery is depleted

The following symptoms may occur:

●

The smart entry & start system and wireless remote control will not function
properly.

●

The operational range will be reduced.

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7-3. Do-it-yourself maintenance

WARNING

■

Battery precautions

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

●

Do not swallow the battery. Doing so may cause chemical burns.

●

A coin battery or button battery is used in the electronic key. If a battery is
swallowed, it may cause severe chemical burns in as little as 2 hours and
may result in death or serious injury.

●

Keep away new and removed batteries from children.

●

If the cover cannot be firmly closed, stop using the electronic key and stow
the key in the place where children cannot reach, and then contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.

●

If you accidentally swallow a battery or put a battery into a part of your
body, get emergency medical attention immediately.

■

To prevent battery explosion or leakage of flammable liquid or gas

●

Replace the battery with a new battery of the same type. If a wrong type of
battery is used, it may explode.

●

Do not expose batteries to extremely low pressure due to high altitude or
extremely high temperatures.

●

Do not burn, break or cut a battery.

■

Certification for the smart entry & start system

CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS

NOTICE

■

For normal operation after replacing the battery

Observe the following precautions to prevent accidents:

●

Always work with dry hands.
Moisture may cause the battery to rust.

●

Do not touch or move any other component inside the remote control.

●

Do not bend either of the battery terminals.

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7-3. Do-it-yourself maintenance

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Checking and replacing fuses

Turn the power switch off.

Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.

Open the fuse box cover.



Engine compartment type A fuse box

While pushing the 2 claws, lift
up the cover.

When closing the cover, make
sure to attach the 2 claws.



Engine compartment type B fuse box

While pushing the 3 claws, lift
up the cover.

When closing the cover, make
sure to attach the 3 claws.

If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.

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7-3. Do-it-yourself maintenance



Left side instrument panel (left-hand drive vehicles)

Remove the lid.

Make sure to press the claw
during removal or installation.



Left side instrument panel (right-hand drive vehicles)

Push the tab in and remove
the cover.
Unplug the connector while
pressing the lock release.
Remove the lid.

Make sure to press the claw
during removal or installation.

Remove the fuse.

Only type A fuse can be
removed using the pullout tool.

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7-3. Do-it-yourself maintenance

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Check if the fuse is blown.

Normal fuse
Blown fuse

Replace the blown fuse with a new fuse of an appropriate amperage rat-
ing. The amperage rating can be found on the fuse box lid.

1
2



Type A



Type B



Type C

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7-3. Do-it-yourself maintenance

■

After a fuse is replaced

●

If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (



P. 639)

●

If the replaced fuse blows again, have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.

■

If there is an overload in a circuit

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.

WARNING

■

To prevent system breakdowns and vehicle fire

Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.

●

Never use a fuse of a higher amperage rating than that indicated, 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 overload determined and repaired by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.

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7-3. Do-it-yourself maintenance

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Light bulbs

Check the wattage of the light bulb to be replaced. (



P. 723)

Back-up light

You may replace the following bulbs by yourself. The difficulty
level of replacement varies depending on the bulb. As there is a
danger that components may be damaged, we recommend that
replacement is carried out by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.

Preparing for light bulb replacement

Bulb locations

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7-3. Do-it-yourself maintenance

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Back-up lights

Remove the 2 clips that secure the lower portion of the cover at
the back of the rear tire.

Pull out the center portion of
the clip to unlock using a flat-
head screwdriver, and then
pull it to remove.

Remove the 3 clips that secure the upper portion of the cover.

Turn the clip counterclockwise to remove.
Pull out the center portion of the clip to unlock using a flathead
screwdriver, and then pull it to remove.
Pull out the center portion of the clip to unlock using a flathead
screwdriver, and then pull it to remove.

Replacing light bulbs

1
2

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7-3. Do-it-yourself maintenance

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Remove the cover end and
pull the cover toward the
front of the vehicle to make a
gap between the cover and
rear bumper.

Remove the clip inside of the cover, and remove the cover.

Pull out the center portion of
the clip to unlock using a flat-
head screwdriver, and then
pull it to remove.

Turn the bulb base counter-
clockwise, and then remove
the light bulb.

To remove the light bulb, insert a
hand from the gap between the
rear tire and rear bumper.

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7-3. Do-it-yourself maintenance

Install a new light bulb then
install the bulb base to the
light unit by inserting it and
turning the bulb base clock-
wise.

Reinstall the cover to the its original position, and attach the clip
inside of the cover.

Attach the clip on the cover,
then press the center portion
of the clip to lock.

Reinsert the cover end to the
rear bumper.

Make sure to secure the 2 tabs
on the cover end.

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7-3. Do-it-yourself maintenance

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Reinsert the 3 clips to the upper portion of the cover.

Turn the clip clockwise to lock.
Attach the clip on the cover, and then press the center portion
of the clip to lock.
Attach the clip on the cover, and then press the center portion
of the clip to lock.

Reinsert the 2 clips to the lower portion of the cover.

Attach the clip on the cover,
and then press the center
portion of the clip to lock.

1
2

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7-3. Do-it-yourself maintenance

■

Replacing the following bulbs

If any of the lights listed below has burnt out, have it replaced by
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.

●

Headlights

●

Daytime running lights

●

Front position lights

●

Front fog lights

●

Front turn signal lights

●

Side turn signal lights

●

Rear turn signal lights

●

Rear fog lights

●

Tail lights

●

Stop lights

●

High mounted stoplight

●

License plate lights

■

LED lights

The lights other than the back-up lights each consist of a number of LEDs. If
any of the LEDs burn out, take your vehicle to any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer to have the light
replaced.

■

Condensation build-up on the inside of the lens

Temporary condensation build-up on the inside of the lens does not indicate a
malfunction. Contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer for more information in the following situa-
tions:

●

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. 638

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7-3. Do-it-yourself maintenance

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WARNING

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Replacing light bulbs

●

Be sure to stop the hybrid system and turn off the lights. Do not attempt to
replace the bulb immediately after turning off the lights.
The bulbs become 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 bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the light unit. This may
damage the back-up lights or cause condensation to build up on the lens.

●

Do not attempt to repair or disassemble light bulbs, connectors, electric
circuits or component parts.
Doing so may result in death or serious injury due to electric shock.

●

Do not replace the right-hand back-up light immediately after the vehicle
has been driven.
After the vehicle has been driven the exhaust pipe will be extremely hot,
and touching the exhaust pipe may result in burns.

●

Use gloves and other protection to prevent injuries on vehicle parts.
There is the danger of being injured on the edges of parts.

■

To prevent damage or fire

●

Make sure bulbs are fully seated and locked.

●

Check the wattage of the bulb before installing to prevent heat damage.

647

When trouble arises

8-1. Essential information

Emergency flashers ...........648
If your vehicle has to

be stopped in an
emergency.......................649

If the vehicle is submerged

or water on the road
is rising ............................650

8-2. Steps to take in an

emergency

If your vehicle needs

to be towed ......................652

If you think something is

wrong...............................658

If a warning light turns on

or a warning buzzer
sounds .............................659

If a warning message is

displayed .........................667

If you have a flat tire ..........675
If the hybrid system will

not start............................693

If the electronic key does

not operate properly ........695

If the 12-volt battery is

discharged .......................699

If your vehicle

overheats.........................705

If the vehicle becomes

stuck ................................710

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