2011 TOYOTA AURIS HYBRID HV battery

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4-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance yourself, be sure to follow the correct
procedures as given in these sections.
ItemsParts and tools
12-volt battery condition
(P. 381)• Grease
• Conventional wrench
(for terminal clamp bolts)
Engine/power control unit coolant
level (P. 377)• Toyota Super Long Life Coolant
or similar high quality ethylene
glycol based non-silicate, non-
amine, non-nitrite and non-borate
coolant with long-life hybrid
organic acid technology. Toyota
Super Long Life Coolant is pre-
mixed with 50% coolant and 50%
deionized water.
• Funnel (used only for adding cool-
ant)
Engine oil levelP. 374)• Toyota Genuine Motor Oil or
equivalent
• Rag or paper towel
• Funnel (used only for adding
engine oil)
Fuses (P. 400)• Fuse with same amperage rating
as original
Radiator and condenser
(P. 379)
Tire inflation pressure (P. 390)• Tire pressure gauge
• Compressed air source
Washer fluid (P. 379)• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding
water or washer fluid)

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12-volt batter y
Location
The 12-volt battery is located
in the right-hand side of lug-
gage compartment.
Removing the 12-volt battery cover
Remove the luggage mat.
Remove the luggage under-
tray.
STEP1
STEP2

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Remove the 12-volt battery
cover.
12-volt battery exterior
Make sure that the 12-volt battery terminals are not corroded
and that there are no loose connections, cracks, or loose
clamps.
Terminals
Hold-down clampSTEP3

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Caution symbol
The meanings of each caution symbol on the top of the 12-volt
battery are as follows:
No smoking, no naked
flames, no sparksBattery acid
Shield eyesNote operating
instructions
Keep away from childrenExplosive gas

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Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, before recharging:
If recharging with the 12-volt battery installed on the vehicle, be sure to
disconnect the ground cable.
Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
After recharging/reconnecting the 12-volt battery
Vehicles with a smart entry & start system: Unlocking the doors using the
entry function may not be possible immediately after reconnecting the
12-volt battery. If this happens, use the wireless remote control or the
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.
However, the hybrid system will operate normally from the second
attempt.
The “POWER” switch mode is recorded by the vehicle. If the 12-volt bat-
tery is reconnected, the vehicle will return the “POWER” switch mode to
the status it was in before the 12-volt battery was disconnected. Make
sure to turn the “POWER” switch off before disconnect the 12-volt bat-
tery. Take extra care when connecting the 12-volt battery if the “POWER”
switch mode prior to discharge is unknown.
When the 12-volt battery is reconnected, start the hybrid system, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.
If the system will not start even after multiple attempts, contact any autho-
rized Toyota dealer or repairer, or another duly qualified and equipped pro-
fessional.

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CAUTION
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 ventilation.
How to recharge the 12-volt battery
Only perform a slow charge (4.2 A or less). The 12-volt battery may explode
if charged at a quicker rate.

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CAUTION
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.

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Key batter y
Replace the battery with a new one if it is depleted.
You will need the following items:
Flathead screwdriver (To prevent damage to the key, cover
the tip of the screwdriver with a rag.)
Small Phillips-head screwdriver
Lithium battery CR1632
Replacing the battery
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2
STEP3