2023 TOYOTA C-HR Owners Manual

6076-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
6
Maintenance and care
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 insuffic ient ventila-
tion.
■ 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.

6086-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
WARNING
■When there is insufficient 12-volt battery fluid
Do not use if there is insufficient fluid in the 12-volt batter y. There is a possi-
ble danger that the 12-volt battery may explode.
■ When disconnecting the 12-volt battery
Do not disconnect the negative (-) terminal on the body side. T he discon-
nected negative (-) terminal may touch the positive (+) termina l, which may
cause a short and result in death or serious injury.
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.
■ When adding distilled water
Avoid overfilling. Water spilled during battery recharging may cause corro-
sion.

6096-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
6
Maintenance and care
Add washer fluid in the following situations:
● A washer does not work.
● The warning message appears
on the multi- information dis-
play. (if equipped)
Washer fluid
WARNING
■ When adding washer fluid
Do not add washer fluid when the hybrid system is hot or operat ing as
washer fluid contains alcohol and may catch fire if spilled on the engine, etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer f luid.
Doing so may cause streaking on the vehicle’s painted surfaces, as well as
damaging the pump leading to problems of the washer fluid not s praying.
■ Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the w asher fluid bot-
tle.

6106-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
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 5
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

6116-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
6
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.
1
2
3

6126-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
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.

6136-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
6
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.

6146-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
Tires
Check if the treadwear indicators are showing on the tires. Also check
the tires for uneven wear, such as excessive wear on one side o f the
tread.
Check the spare tire condition and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators is shown by a “TWI” or “ ” mark, etc.,
molded into the sidewall of each tire.
Replace the tires if the treadwear indicators are showing on a tire.
Replace or rotate tires in accordance with maintenance sched-
ules and treadwear.
Checking tires