2019 TOYOTA AYGO engine

3667-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
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
retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■ When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
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.

3687-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
■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 retailer or Toyota authorized repairer, or any reliable repairer.

3697-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99R19E
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.

3707-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
If the washer does not work, the
washer tank may be empty. Add
washer fluid.
Washer fluid
WARNING
■ When adding washer fluid
Do not add washer fluid when the engine is hot or running as washer fluid
contains alcohol and may catch fi re if spilled on the engine, etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces, as well as
damaging the pump leading to problems of the washer fluid not spraying.
■ Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures list ed on the label of the washer fluid bot-
tle.

3747-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
■How to initialize the tire pressure warning system
Park the vehicle in a safe place and turn the engine switch to the
“LOCK” position (vehicles without a smart entry & start system)
or off (vehicles with a smart entry & start system).
Initialization cannot be performed while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. ( P. 480)
Make sure to adjust the tire pressure to the specified cold tire inflation
pressure level. The tire pressure warning system will operate based on
this pressure level.
Turn the engine switch to the “ON” position (vehicles without a
smart entry & start system) or IGNITION ON mode (vehicles with
a smart entry & start system).
Press and hold the tire pres-
sure warning reset switch
until the tire pressure warn-
ing light blinks slowly 3 times.
■ Situations in which the tire pressure warning system may not operate
properly (if equipped)
● This tire pressure warning system ensure a proper function when OE (Origi-
nal Equipment) tire is installed.
● In the following cases, the tire pressure warning system may not operate
properly.
• The vehicle uses non-standard size tires or tires made by other manufac-
turers.
• The vehicle uses tire of different size or manufacturers.
• The vehicle uses snow tires, compact spare tire (if equipped) or tire
chains.
• The vehicle is being driven below approximately 40 km/h (25 mph).
• The vehicle is being driven on slippery or rough road surfaces.
● When tire inflation pressure declines rapidly for example when a tire has
burst, the warning may not function.

3827-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
Air conditioning filter
Vehicles without a smart entry & start system:
Turn the engine switch to the “LOCK” position.
Vehicles with a smart entry & start system:
Turn the engine switch off.
Pull out the air conditioning filter
as shown in the illustration.
Replace it with a new one.
■ Changing interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to the
“Toyota Service Booklet” or “Toyota Warranty Booklet”.)
■ If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.
Removal method
NOTICE
■ When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditi oning system without a filter may cause damage to the
system.

3867-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
Checking and replacing fuses
Vehicles without a smart entry & start system:
Turn the engine switch to the “LOCK” position.
Vehicles with a smart entry & start system:
Turn the engine switch off.
After a system failure, see “Fuse layout and amperage ratings” for
details about which fuse to check. ( P. 388)
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the
cover off.
Driver’s side instrument panel
Remove the cover.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.

3887-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
■Engine compartment
Fuse layout and amperage ratings
FuseAmpereCircuit
1H-LP RH-LO10Right-hand headlight (low beam)
2H-LP LH-LO10Left-hand headlight (low beam), manual
headlight leveling dial
3H-LP RH-HI7.5Right-hand headlight (high beam)
4H-LP LH-HI7.5Left-hand headlight (high beam), gauges
and meters
5A/C COMP7.5Air conditioning system
6IG2 NO.37.5
Multiport fuel injection system/sequential
multiport fuel injection system, stop
lights, high mounted stoplight
7DOME5Interior light, luggage compartment light
8HAZ10Turn signal lights, emergency flashers,
gauges and meters
9HORN10Horn
10D/C CUT30ECU-B NO.1, ECU-B NO.2, ECU-B NO.3