2018 TOYOTA AURIS battery

4377-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
7
Maintenance and care
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 the 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 not sufficient ventila-
tion.
■ How to recharge the 12-volt battery
Only perform a slow charge (5 A or less). The 12-volt battery may explode if
charged at a quicker rate.

4387-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
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 a burning sensation,
seek 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. Follow with milk of magnesia,
beaten raw egg or vegetable oil. Get emergency medical attention immedi-
ately.
■ When replacing the 12-volt battery
Use a 12-volt battery designed for the AURIS HYBRID. 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 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.

4597-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
7
Maintenance and care
●Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2032
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the battery cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Electronic key battery
Replace the battery with a new one if it is depleted or “Key bat-
tery low.” is displayed on the multi-information display.
You will need the following items:
Replacing the battery
1
2
3

4607-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
■ Use a CR2032 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), push button start (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 INSTRUC-
TIONS

4617-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
7
Maintenance and care
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.

481
8When trouble arises
UK AURIS_HV_HB_EE (OM12M49E)
8-1. Essential information
Emergency flashers ........... 482
If your vehicle has
to be stopped in an
emergency ....................... 483
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ...................... 484
If you think something is
wrong ............................... 490
If a warning light turns
on or a warning buzzer
sounds ............................. 491
If a warning message is
displayed ......................... 498
If you have a flat tire
(vehicles with
a spare tire) ..................... 507
If you have a flat tire
(vehicles with an
emergency tire
puncture repair kit)........... 519
If the hybrid system will
not start............................ 534
If the electronic key does
not operate properly ........ 536
If the 12-volt battery is
discharged ....................... 539
If your vehicle
overheats ......................... 544
If the vehicle becomes
stuck ................................ 549

484
UK AURIS_HV_HB_EE (OM12M49E)
8-2. Steps to take in an emergency
In the following situations, it is not possible to be towed by another
vehicle using cables or chains, as the front wheels may be locked due
to the parking lock. Contact any aut horized Toyota dealer or repairer,
or another duly qualified and equ ipped professional or commercial
towing service.
● There is a malfunction in the P position control system. (P. 498)
● There is a malfunction in the immobilizer system. (P. 82)
● There is a malfunction in the smart entry & start system. (P. 536)
● The 12-volt battery is discharged. (P. 539)
If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle
towed by any authorized Toyota dealer or repairer, or another
duly qualified and equipped prof essional or commercial towing
service, using a wheel-lift type truck or flatbed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws.
Situations when it is not possibl e to be towed by another vehicle

4968-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
■ If the tire pressure warning light frequently comes on after blinking for 1
minute (vehicles with a tire pressure warning system)
If the tire pressure warning light frequently comes on after blinking for 1 min-
ute when the power switch is turned to ON mode, have it checked by any
authorized Toyota dealer or repairer, or another duly qualified and equipped
professional.
■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.
■ Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.