Toyota C-HR (2023 year). Manual in english - page 34

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6-3. Do-it-yourself maintenance

Hybrid battery (traction battery) air intake

vent and filter

Remove the dust from the air
intake vent with a vacuum
cleaner, etc.

Make sure to only use a vacuum to
suck  out  dust  and  clogs. Attempt-
ing  to  blow  out  dust  and  clogs
using  an  airgun,  etc.,  may  push  it
into the air intake vent. (



P. 642)

If dust and clogs cannot be completely removed with the air intake
vent cover installed, remove the cover and clean the filter.

Turn the power switch off.

Using a Phillips screwdriver,
remove the clip.

To prevent the fuel economy from being affected, visually
inspect the hybrid battery (traction battery) air intake vent peri-
odically for dust and clogs. If it is dusty or clogged or if “Mainte-
nance required for Traction battery cooling parts. See owner’s
manual.” is displayed on the multi-information display, clean the
air intake vent using the following procedures:

Cleaning the air intake vent

If dust and clogs cannot be completely removed

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Remove the air intake vent
cover.

Pull  the  cover  as  shown  in
the  illustration  to  disengage
the 5 claws, starting from the
claw  in  the  upper  right  cor-
ner.
Pull  the  cover  toward  the
front of the vehicle to remove
it.

Remove the air intake vent fil-
ter.

Disengage  the  1  claw  as
shown in the illustration.
Disengage  the  2  claws  to
remove  the  filter  from  the
cover.

Remove the dust and clogs
from the filter using a vacuum
cleaner, etc.

Make sure to also remove the dust
and clogs from the inside of the air
intake vent cover.

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6-3. Do-it-yourself maintenance

Reinstall the filter to the cover.

Engage  the  filter  to  the  2
claws  as  shown  in  the  illus-
tration.
Engage  the  1  claw  to  install
the filter.

Make sure that the filter is not
crooked or deformed when install-
ing it.

Install the air intake vent cover.

Insert the tab of the cover as
shown in the illustration.
Push the cover to engage the
5 claws.

Install the clip.

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■

Cleaning the air intake vent

●

Dust in the air intake vent may interfere with the cooling of the hybrid battery
(traction battery). If charging/discharging of the hybrid battery (traction bat-
tery) becomes limited, the distance that the vehicle can be driven using the
electric motor (traction motor) may be reduced and the fuel economy may
be reduced. Inspect and clean the air intake vent periodically.

●

Improper handling of the air intake vent cover and filter may result in dam-
age to them. If you have any concerns about cleaning the filter, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.

■

If “Maintenance required for Traction battery cooling parts See owner’s
manual.” is shown on the multi-information display

●

If this message is shown on the multi-information display, remove the air
intake vent cover and clean the filter. (



P. 638)

●

After cleaning the air intake vent, start the hybrid system and check that the
warning message is no longer displayed.
After the hybrid system is started, it may be necessary to drive the vehicle
up to approximately 20 minutes before the warning message disappears. If
the warning message does not disappear after driving for appropriately 20
minutes, have the vehicle inspected by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.

WARNING

■

When cleaning the air intake vent

●

Before cleaning the air intake vent, make sure to turn the power switch off
to stop the hybrid system.

●

Do not use water or other liquids to clean the air intake vent. If water is
applied to the hybrid battery (traction battery) or other components, a mal-
function or fire may occur.

■

When removing the air intake vent cover

Do not touch the service plug located near the air intake vent. (



P. 125)

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6-3. Do-it-yourself maintenance

NOTICE

■

When cleaning the air intake vent

■

To prevent damage to the vehicle

●

Do not allow water or foreign matter to enter the air intake vent when the
cover is removed.

●

Carefully handle the removed filter so that it will not be damaged. If the fil-
ter is damaged, have it replaced with a new filter by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.

●

Make sure to reinstall the filter and cover to their original positions after
cleaning.

●

Do not install anything to the air intake vent other than the exclusive filter
for this vehicle or use the vehicle without the filter installed.

■

If “Maintenance required for Traction battery cooling parts See owner’s
manual.” is shown on the multi-information display

If  the  vehicle  is  continuously  driven  with  the  warning  message  (indicating
that  charging/discharging  of  the  hybrid  battery  [traction  battery]  may
become  limited)  displayed,  the  hybrid  battery  (traction  battery)  may  mal-
function.  If  the  warning  message  is  displayed,  clean  the  air  intake  vent
immediately.

When cleaning the air intake vent, make
sure  to  only  use  a  vacuum  to  suck  out
dust and clogs. If a compressed air blow
gun,  etc.,  is  used  to  blow  out  dust  and
clogs,  the  dust  or  clogs  may  be  pushed
into the air intake vent, which may affect
the  performance  of  the  hybrid  battery
(traction  battery)  and  cause  a  malfunc-
tion.

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Electronic key battery

●

Flathead screwdriver

●

Small flathead screwdriver

●

Lithium battery CR2032

Release the lock and take out
the mechanical key.

Remove the cover.

Use  an  appropriate  sized  flathead
screwdriver.  Forceful  prying  may
deform the cover.
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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6-3. Do-it-yourself maintenance

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.
Use  an  appropriate  sized  flathead
screwdriver  when  removing  the
battery.
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 local laws.

■

If the key battery is depleted

The following symptoms may occur:

●

The smart entry & start system, push button start and wireless remote con-
trol will not function properly.

●

The operational range will be reduced.

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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.

●

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 lithium battery

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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6-3. Do-it-yourself maintenance

Checking and replacing fuses

Turn the power switch off.
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 (2ZR-FXE engine)

While pushing the 3 claws, lift up
the cover.

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



Engine compartment type B fuse box (M20A-FXS engine)

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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

Engine compartment type C fuse box (2ZR-FXE engine)

Remove the cover.

When installing the cover, make
sure to attach the claw.



Luggage compartment (M20A-FXS engine)

Remove the deck board
(



P. 565).

While pushing the claw, lift up the
cover.

When closing the cover, make sure
to attach the claw.



Left side instrument panel (left-hand drive vehicles)

Remove the lid.

Make sure to press the claw during
removal or installation.

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6-3. Do-it-yourself maintenance



Left side instrument panel (right-hand drive vehicles)

Remove the cover and the lid.

Push the tab in and remove
the cover.
Remove the lid.

Make sure to press the claw
during removal or installation.

Remove the fuse with the pullout tool.

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



2ZR-FXE engine



M20A-FXS engine

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Check if the fuse is blown.

Normal fuse
Blown fuse

Except for Type E:
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.
Type E:
Contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.



Type A



Type B



Type C



Type D



Type E

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6-3. 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. 651)

●

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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Light bulbs

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



P. 776)

■

Front

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

Front turn signal lights (bulb type)
Front fog lights (if equipped on bulb type)
Side turn signal lights