Toyota Prius Prime (2020 year). Owner's manual — part 40

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7-3. Do-it-yourself maintenance

Wiper insert replacement

While securely supporting the
wiper blade connection by
hand, press the lock knob to
release the lock, and then pull
out the wiper blade.

Align the wiper blade with the
connecting portion of the wiper
arm, and then slide it in the
direction it was removed from.

After installing the wiper blade,
check that the connection is
locked.

When replacing the wiper insert, perform the following proce-
dure.

Windshield wiper blade removal and installation

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Pull the wiper insert until it pro-
trudes from the slit on the back
of the wiper blade.

Pull out the end of the wiper
insert from the slit, and then pull
out the rest of the wiper insert.

When installing a new wiper
insert, perform the procedure in
reverse.

After installation, check that the
end of the wiper insert is installed
all the way to the end of the cap.

Wiper insert replacement

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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 your Toyota dealer.

■

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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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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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 your Toyota dealer, 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 key system and wireless remote control will not function properly.

●

The operational range will be reduced.

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WARNING

■

Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.

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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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.



Left side instrument panel

Remove the lid.

Make sure to press the claw
during removal or installation.

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

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.

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

Type A



Type B



Type C

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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. 643)

●

If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.

■

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, nongenuine 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 your
Toyota dealer as soon as possible.

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Headlight aim

Adjustment bolt A
Adjustment bolt B

Make sure the vehicle has a full tank of gasoline and the area
around the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.

Vertical movement adjusting bolts

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Before checking the headlight aim

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Using a Phillips-head screw-
driver, turn bolt A in either direc-
tion.

Remember the turning direction
and the number of turns.

Turn bolt B the same number of
turns and in the same direction
as step

.

If the headlight cannot be adjusted
using this procedure, take the vehi-
cle to your Toyota dealer to adjust
the headlight aim.

Adjusting the headlight aim

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Light bulbs

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

P. 726)

Back-up light

You may replace the following bulbs by yourself. The difficulty
level of replacement 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 locations

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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

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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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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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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.

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