2021 TOYOTA C-HR battery

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

3976-3. Do-it-yourself maintenance
6
Maintenance and care
C-HR_OM_USA_OM10684U
Wireless remote control/electronic key bat-
ter y
●Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2032
Vehicles without a smart key system
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the battery cover.
If the battery cover is difficult to
remove, lift the edge to remove it.
Remove the depleted battery
using a small flathead screw-
driver.
Insert a new battery with the “+”
terminal facing up.
Replace the battery with a n ew one if it is depleted.
You will need the following items:
Replacing the battery
1
2
3

3986-3. Do-it-yourself maintenance
C-HR_OM_USA_OM10684U
Install the battery cover with the
tab facing up.
Push the entire edge of the battery
cover into the key.
Install the key cover.
Align the key cover with the key
and then press it straight into the
key.
Make sure that the key cover is
securely installed without any gaps
between it and the key.
Vehicles with a smart key system
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.
4
5
1
2

3996-3. Do-it-yourself maintenance
6
Maintenance and care
C-HR_OM_USA_OM10684U
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 your Toyota dealer, local electri cal 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 key system (if equipped) and wireless remote control will not
function properly.
● The operational range will be reduced.
3
4

4006-3. Do-it-yourself maintenance
C-HR_OM_USA_OM10684U
WARNING
■Removed battery a nd 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 cont rol.
● Do not bend either of the battery terminals.

421
7When trouble arises
C-HR_OM_USA_OM10684U7-1. Essential information
Emergency flashers .......... 422
If your vehicle has to be stopped in
an emergency ................. 423
If the vehicle is trapped in rising water..... 425 7-2. Steps to
take in an emergency
If your vehicle needs to be towed .............................. 426
If you think something is wrong ......... 432
Fuel pump shut off system ............................ 433
If a warning light turns on or a warning buzzer
sounds ............................ 434
If a warning message is displayed......................... 444
If you have a flat tire.......... 449
If the engine will not start ................................. 460
If the electronic key does not operate properly
(vehicles with a
smart key system) ........... 462
If the vehicle battery is discharged ...................... 465
If your vehicle overheats ... 470
If the vehicle becomes stuck ............................... 473

4227-1. Essential information
C-HR_OM_USA_OM10684U
Emergency flashers
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch
once again.
■Emergency flashers
If the emergency flashers are used for a long time while the en gine is not
operating, the battery may discharge.
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in the road due to a breakdown, etc.