2017 TOYOTA YARIS HYBRID battery

3467-3. Do-it-yourself maintenance
YARIS_HV_OM_Europe_OM52G76E
WARNING
■Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may
produce hydrogen gas which is flammable and explosive. To reduce 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 12-volt battery.
■ Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-
volt battery in a garage or closed room where there is insufficient ventila-
tion.
■ When disconnecting the 12-volt battery terminals
Always disconnect the negative (-) terminal first. If the positive (+) terminal
is disconnected first and touches a surrounding metal surface sparks will be
produced, possibly starting a fire. It could also result in an electric shock or
serious injury.
■ How to recharge the 12-volt battery
Only perform a slow charge (3.5 A or less). The 12-volt battery may explode
if charged at a quicker rate.

3477-3. Do-it-yourself maintenance
7
Maintenance and care
YARIS_HV_OM_Europe_OM52G76E
WARNING
■Emergency measures regarding electrolyte
● If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with 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 fire or
explosion.
For replacement of the 12-volt battery, contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
NOTICE
■ When recharging the 12-volt battery
Never recharge the 12-volt battery while the hybrid system is operating.
Also, be sure all accessories are turned off.

3697-3. Do-it-yourself maintenance
7
Maintenance and care
YARIS_HV_OM_Europe_OM52G76E
Wireless remote control/electronic key bat-
ter y
● Flathead screwdriver
● Lithium battery CR2016 (vehicles without a smart entry & start sys-
tem), or CR2032 (vehicles with a smart entry & start system)
Vehicles without a smart entry & start system
Lift the cover.
Insert the screwdriver in the slot
and push down.
To prevent damage to the key,
cover the tip of the screwdriver with
a tape.
Remove the cover.
Insert the screwdriver in the bottom
of the key and push down.
: If equipped
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2

3707-3. Do-it-yourself maintenance
YARIS_HV_OM_Europe_OM52G76E
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
Vehicles with a smart entry & start system
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a tape.
Remove the battery cover.
3
1
2
3

3717-3. Do-it-yourself maintenance
7
Maintenance and care
YARIS_HV_OM_Europe_OM52G76E
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
■ Use a CR2016 (vehicles without a smart entry & start system) or CR2032
(vehicles with a smart entry & start system) lithium battery
● Batteries can be purchased at any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, 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 (if equipped) and wireless remote control will
not function properly.
● The operational range will be reduced.
4
WARNING
■Removed battery and 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.
■ 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

3727-3. Do-it-yourself maintenance
YARIS_HV_OM_Europe_OM52G76E
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.

393
8When trouble arises
YARIS_HV_OM_Europe_OM52G76E
8-1. Essential information
Emergency flashers ........... 394
If your vehicle has to
be stopped in
an emergency .................. 395
8-2. Steps to take in
an emergency
If your vehicle needs to
be towed .......................... 397
If you think something is
wrong ............................... 403
If a warning light turns on
or a warning buzzer
sounds ............................. 404
If you have a flat tire
(vehicles with
a spare tire) ..................... 415
If you have a flat tire
(vehicles with
an emergency tire
puncture repair kit)........... 430
If the hybrid system will
not start............................ 446
If the electronic key does
not operate properly
(vehicles with a smart
entry & start system)........ 448
If the vehicle 12-volt
battery is discharged ....... 450
If your vehicle overheats .... 455
If the vehicle becomes
stuck ................................ 460

4078-2. Steps to take in an emergency
8
When trouble arises
YARIS_HV_OM_Europe_OM52G76E
(Yellow)
Brake system warning light
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system.
 Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
(Yellow)
Cruise control indicator*2
Indicates a malfunction in the cruise control system.
 Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
(Yellow)
(Yellow)
LDA indicator*2 and Lane marker indicators*2
Indicates a malfunction in the LDA system.
 Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional.
(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator*2
Indicates a malfunction in the smart entry & start system.
 Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional.
Low traction battery warning light
Indicates that the hybrid battery (traction battery) is low.
 Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional.
Open door warning light (warning buzzer)*3
Indicates that one or more of the doors is not fully closed.
 Check that all the side doors and back door are
closed.
Low fuel level warning light
Indicates that remaining fuel is about 5.2 L (1.4 gal.,
1.1 lmp. gal.) or less.
 Refuel the vehicle.
(On the instrument cluster)
Driver’s and front passenger’s seat belt reminder light
(warning buzzer)*4
Warns the driver and front passenger to fasten their seat
belts.
 Fasten the seat belt.
Warning lightWarning light/Details/Actions