2021 TOYOTA C-HR maintenance

3666-3. Do-it-yourself maintenance
C-HR_OM_USA_OM10684U
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehic le inspected by your Toyota dea ler.
WARNING
■When the engine is hot
Do not remove the engine coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The cor rect mixture of
water and antifreeze must be used to provide proper lubrication , corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging p arts or paint.
Radiator and condenser
WARNING
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and c ause seri-
ous injuries, such as burns.

3676-3. Do-it-yourself maintenance
6
Maintenance and care
C-HR_OM_USA_OM10684U■
Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
■Adding fluid
Slide and lift up the rubber
strip to partly remove it as
shown.
Disconnect the claws and
remove the service cover.
Remove the reservoir cap.
Brake fluid
1
2
3

3686-3. Do-it-yourself maintenance
C-HR_OM_USA_OM10684U
Add brake fluid slowly while checking the fluid level.
Make sure to check the fluid type and prepare the necessary
item.
■ Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss o f braking effi-
ciency. Use only newly opened brake fluid.
4
Fluid typeFMVSS No.116 DOT 3 or SAE J1703;
FMVSS No.116 DOT 4 or SAE J1704 brake fluid
ItemClean funnel
WARNING
■ When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damag e
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with clean
water immediately.
If you still experience discomfort, see a doctor.
NOTICE
■ If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as t he brake pads
wear out or when the fluid level in the accumulator is high.
However, if the reservoir needs frequent refilling, there may b e a serious
problem. Have the vehicle inspected at your Toyota dealer as soon as pos-
sible.

3696-3. Do-it-yourself maintenance
6
Maintenance and care
C-HR_OM_USA_OM10684U
Check the battery as follows.
■Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
■Checking battery fluid
If there are lines on th e side of the battery:
Check that the leve l is between the upper and lower lines.
Upper line
Lower line
If the fluid level is at or below the
lower line, add distilled water.
Battery

3706-3. Do-it-yourself maintenance
C-HR_OM_USA_OM10684U
If there are not lines on the side of the battery:
Check the fluid level as follows. Remove the vent plug.
Check the fluid level by look-
ing directly at the cell.
If the fluid level is low, add dis-
tilled water.
Put the vent plug back o n and close it securely.
■Adding distilled water
Remove the vent plug.
Add distilled water.
Put the vent plug back o n and close it securely.
1
LowO.K.O
P
N
O
P

3716-3. Do-it-yourself maintenance
6
Maintenance and care
C-HR_OM_USA_OM10684U
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following before recharging:
●If recharging with the battery installed on the vehicle, be sur e to disconnect
the ground cable.
● Make sure the power switch on the charger is off when connectin g and dis-
connecting the charger cables to the battery.
■ After recharging/reconnecting the battery (vehicles with a smar t key sys-
tem)
● The engine may not start. Follow the procedure below to initial ize the sys-
tem.
Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.
● Unlocking the doors using the smart key system may not be possi ble imme-
diately after reconnecting the battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors.
● Start the engine with the engine switch in ACCESSORY mode. The engine
may not start with the engine switch turned off. However, the e ngine will
operate normally from the second attempt.
● The engine switch mode is recorded by the vehicle. If the batte ry is recon-
nected, the vehicle will return the engine switch mode to the s tatus it was in
before the battery was disconnected. Make sure to turn off the engine switch
before disconnecting the battery. Take extra care when connecti ng the bat-
tery if the engine switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts at al l methods above,
contact your Toyota dealer.
1
2
3

3726-3. Do-it-yourself maintenance
C-HR_OM_USA_OM10684U
WARNING
■Chemicals in the battery
Batteries contain poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the ri sk of death
or serious injury, take the following precautions while working on or near the
battery:
● Do not cause sparks by touching the battery terminals with tool s.
● Do not smoke or light a match near the battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the battery.
● Keep children away from the battery.
■ Where to safely charge the battery
Always charge the battery in an open area. Do not charge the ba ttery 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 there is insufficient battery fluid
Do not use if there is insufficient fluid in the battery. There is a possible dan-
ger that the battery may explode.

3736-3. Do-it-yourself maintenance
6
Maintenance and care
C-HR_OM_USA_OM10684U
Add washer fluid in the following situations:
● A washer does not work.
● The warning message appears
on the multi-information display
(if equipped).
NOTICE
■When recharging the battery
Never recharge the battery while the engine is running. Also, b e sure all
accessories are turned off.
■ When adding distilled water
Avoid overfilling. Water spilled during battery recharging may cause corro-
sion.
Washer fluid