2017 TOYOTA AYGO battery

3267-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99Q24E
Radiator and
condenser
( P. 338)

Tire inflation
pressure
( P. 349)
• Tire pressure gauge
• Compressed air source
Washer fluid
( P. 342)
• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become el ectrically energized. To avoid death
or serious injury, observe the following precautions.
■ When working on the engine compartment
● Keep hands, clothing and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc., right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
● Take care because brake fluid can harm your hands or eyes and damage
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, consult a doctor.
ItemsParts and tools

3317-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99Q24E
Engine compartment
1KR engine
Engine oil filler cap
( P. 334)
Fuse box ( P. 357)
Battery ( P. 338)
Engine coolant reservoir
( P. 336)
Radiator ( P. 338)
Electric cooling fan
Condenser ( P. 338)
Engine oil level dipstick
( P. 333)
Washer fluid tank ( P. 342)
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3327-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99Q24E
HM01 engine
Engine coolant reservoir
( P. 336)
Engine oil filler cap
( P. 334)
Fuse box ( P. 357)
Battery ( P. 338)
Radiator ( P. 338)
Electric cooling fan
Condenser ( P. 338)
Engine oil level dipstick
( P. 333)
Washer fluid tank ( P. 342)
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5
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3387-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99Q24E
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 vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
Check the battery as follows:
■Caution symbols
The meanings of each caution symbol on the top of the battery are
as follows:
NOTICE
■ When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct 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 parts or paint.
Radiator and condenser
WARNING
■ When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.
Battery
No smoking, no naked
flames, no sparksBattery acid
Shield eyesNote operating
instructions
Keep away from
childrenExplosive gas

3397-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99Q24E
■Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
■Checking battery condition (if equipped)
Check the battery condition by indicator color.
Green: Good condition
Dark: Charging is necessary.
Have the vehicle inspected
by any authorized Toyota
dealer or repairer, or another
duly qualified and equipped
professional.
White: Not working properly.
Have the vehicle inspected by any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
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3407-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99Q24E
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, before recharging:
● If recharging with the 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 dis-
connecting the charger cables to the battery.
■ After recharging/reconnecting the battery (vehicles with a smart entry &
start system)
The engine may not start. Follow the pr ocedure below to initialize the system.
Depress the brake pedal with the shift lever in N.
Open and close any of the doors.
Restart the engine.
● Unlocking the doors using the smart entry & start system may not be possi-
ble immediately after reconnecting the battery. If this happens, use the wire-
less 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 engine will
operate normally from the second attempt.
● The engine switch mode is recorded by the vehicle. If the battery is recon-
nected, the vehicle will return the engine switch mode to the status it was in
before the battery was disconnected. Make sure to turn off the engine
before disconnect the battery. Take extra care when connecting the battery
if the engine switch mode prior to discharge is unknown.
If the engine will not start even after multiple attempts, contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped professional.

3417-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99Q24E
WARNING
■Chemicals in the battery
A 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
battery:
● Do not cause sparks by touching the battery terminals with tools.
● 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 battery in a
garage or closed room w here there is not sufficient ventilation.
■ How to recharge the battery
Only perform a slow charge (5 A or less). The battery may explode if
charged at a quicker rate.
■ 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.
NOTICE
■ When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all
accessories are turned off.

3547-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99Q24E
Wireless remote control/electronic key
battery
● Flathead screwdriver
● Small 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 flathead screwdriver in
the slot and push down.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
Remove the cover.
Insert the flathead screwdriver in
the bottom of 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