2022 TOYOTA C-HR battery

6126-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
12-volt batter y (M20A-FXS engine)
The 12-volt battery is located in
the luggage compartment under
the deck board.
Removing the deck board:
 P. 5 6 7
Make sure that the 12-volt battery terminals are not corroded a nd that
there are no loose connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
Location
Exterior

6136-3. Do-it-yourself maintenance
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Maintenance and care
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas whic h is flam-
mable and explosive. Therefore, observe the following precautio ns before
recharging:
● If recharging with the 12-volt battery installed on the vehicle, be sure to dis-
connect the ground cable.
● Make sure the power switch on the charger is off when connecting and dis-
connecting the charger cables to the 12-volt battery.
■ After recharging/reconnecting the 12-volt battery
● The hybrid system may not start. Follow the procedure below to initialize the
system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the hybrid system.
● Vehicles with entry function: Unlocking the doors using the smart entry &
start system may not be possible immediately after reconnecting the 12-volt
battery. If this happens, use the wireless remote control or th e mechanical
key to lock/unlock the doors.
● Start the hybrid system with the power switch in ACCESSORY mode. The
hybrid system may not start with the power switch turned off. H owever, the
hybrid system will operate normally from the second attempt.
● The power switch mode is recorded by the vehicle. If the 12-volt battery is
reconnected, the vehicle will return the power switch mode to t he status it
was in before the 12-volt battery was disconnected. Make sure t o turn off
the power before disconnect the 12-volt battery. Take extra car e when con-
necting the 12-volt battery if the power switch mode prior to d ischarge is
unknown.
If the system will not start even after multiple attempts all m ethods above,
contact any authorized Toyota retailer or Toyota authorized rep airer, or any
reliable repairer.
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6146-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
WARNING
■Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric a cid and may
produce hydrogen gas which is flammable and explosive. To reduc e the risk
of death or serious injury, take the following precautions while working on or
near the 12-volt battery:
● Do not cause sparks by touching the 12-volt battery terminals with tools.
● Do not smoke or light a match near the 12-volt battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the 12-volt battery.
● Keep children away from the 12-volt battery.
■ Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charg e the 12-volt
battery in a garage or closed room where there is insufficient ventilation.
■ Emergency measures regarding electrolyte
● If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and ge t immedi-
ate medical attention. If possible, continue to apply water wit h a sponge or
cloth while traveling to the nearest medical facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.
● If you accidentally swallow electrolyte Drink a large quantity of water or
milk. Get emergency medical attention immediately.
■ When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may cause
gas (hydrogen) to enter the passenger compartment, causing a fi re or
explosion.
For replacement of the 12-volt battery, contact any authorized To y o t a
retailer or Toyota authorized repairer, or any reliable repaire r.

6156-3. Do-it-yourself maintenance
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Maintenance and care
NOTICE
■When recharging the 12-volt battery
Never recharge the 12-volt battery while the hybrid system is o perating.
Also, be sure all accessories are turned off.

6406-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
Hybrid batter y (traction batter y) 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. 644)
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 p eri-
odically for dust and clogs. If it is dusty or clogged or if “M ainte-
nance required for Traction battery cooling parts. See owner’s
manual.” is displayed on the multi-information display, clean t he
air intake vent using the following procedures:
Cleaning the air intake vent
If dust and clogs cannot be completely removed
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6436-3. Do-it-yourself maintenance
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6
Maintenance and care
■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 batte ry (traction bat-
tery) becomes limited, the distance that the vehicle can be dri ven using the
electric motor (traction motor) may be reduced and the fuel eco nomy 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 an y 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. 640)
● 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 driv e the vehicle
up to approximately 20 minutes before the warning message disap pears. If
the warning message does not disappear after driving for approp riately 20
minutes, have the vehicle inspected by any authorized Toyota re tailer 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 compo nents, 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. 126)

6446-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
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 autho rized Toyota
retailer or Toyota authorized repairer, or any reliable repaire r.
● 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 installe d.
■ 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 batte ry] may
become limited) displayed, the hybrid battery (traction battery ) may mal-
function. If the warning message is displayed, clean the air in take 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.

6456-3. Do-it-yourself maintenance
C-HR_HV_OM_Europe_OM10720E
6
Maintenance and care
Electronic key batter y
●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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