cooling TOYOTA YARIS 2018 Owners Manual

891-3. Hybrid system
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For safety and security
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■ After the 12-volt battery has discharged or when the terminal has been
removed and installed during exchange, etc.
The gasoline engine may not stop even if the vehicle is being driven by the
hybrid battery (traction battery). If this continues for a few days, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■ Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration even though the vehicle is able to
move with the “READY” indicator is illuminated. For safety, apply the parking
brake and make sure to shift the shift lever to P when parked.
The following sounds or vibrations may occur when the hybrid system is
operating and are not a malfunction:
● Motor sounds may be heard from the engine compartment.
● Sounds may be heard from the hybrid battery (traction battery) behind the
rear seats when the hybrid system starts or stops.
● Relay operating sounds such as a snap or soft clank will be emitted from the
hybrid battery (traction battery), behind the rear seats, when the hybrid sys-
tem is started or stopped.
● Sounds from the hybrid system may be heard when the back door is open.
● Sounds may be heard from the transmission when the gasoline engine
starts or stops, when driving at low speeds, or during idling.
● Engine sounds may be heard when accelerating sharply.
● Sounds may be heard due to regenerative braking when the brake pedal is
depressed or as the accelerator pedal is released.
● Vibration may be felt when the gasoline engine starts or stops.
● Cooling fan sounds may be heard from the air intake vent on the side of the
lower part of the rear left seats.
■ Maintenance, repair, recycling, and disposal
Contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer regarding maintenance, repair, recycling and disposal. Do
not dispose of the vehicle yourself.
■ Customization
Settings (e.g. on/off operation of the EV indicator) can be changed.
(Customizable features P. 603)

911-3. Hybrid system
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For safety and security
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There is an air intake vent on the
side of the lower part of the rear
left seat for the purpose of cooling
the hybrid battery (traction bat-
tery). When the air intake vent is
blocked, the battery operations
will be restricted and cause a
decline in fuel consumption.
When a certain level of impact is detected by the impact sensor, the
emergency shut off system blocks the high voltage current and stops
the fuel pump to minimize the risk of electrocution and fuel leakage. If
the emergency shut off system activates, your vehicle will not restart.
To restart the hybrid system, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
A message is automatically displayed when a malfunction occurs in
the hybrid system or an improper operation is attempted.
If a warning message is shown on
the multi-information display, read
the message and follow the
instructions.
Hybrid battery (traction battery) air intake vent
Emergency shut off system
Hybrid warning message (vehicles with color display)

951-3. Hybrid system
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For safety and security
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NOTICE
■Hybrid battery (traction battery) air intake vent
● Do not get water or foreign materials in the air intake vent as this may
cause a short circuit and damage the hybrid battery (traction battery).
● Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction battery), the battery
may be damaged. Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
● There is a filter installed to the air intake vent. When the filter remains
noticeably dirty even after cleaning the air intake vent, filter cleaning or
replacement is recommended. For information regarding filter cleaning or
replacement, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
● Vehicles with color display: If “Maintenance required for Traction battery
cooling parts. See owner’s manual.” is shown on the multi-information dis-
play, the air intake vent and filter may be clogged. Refer to P. 420 for infor-
mation on how to clean the air intake vent.
● Do not place objects that will block the
air intake vent. When the air intake vent
is blocked, the battery operations will be
restricted and cause a decline in fuel
consumption.
● Clean the air intake vent regularly to
prevent the hybrid battery (traction bat-
tery) from overheating.

2334-2. Driving procedures
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Driving
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*: To improve fuel efficiency and reduce noises, set the shift lever in D for
normal driving.
Suitable for improving the fuel economy, because the torque corre-
sponding to the accelerator pedal depression amount can be gener-
ated more smoothly than it is in normal conditions and the operation
of the air conditioning system (heating/cooling) will be minimized.
Eco drive mode
When Eco drive mode is turned on,
the “ECO MODE” indicator will
come on.
Pressing the “ECO MODE” switch
again turns Eco drive mode off.
■ Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the
air conditioning system to enhance fuel efficiency. ( P. 393) To improve air
conditioning performance, adjust the temper ature setting or fan speed, or turn
off Eco drive mode.
Shift position purpose
Shift positionFunction
PParking the vehicle/starting the hybrid system
RReversing
NNeutral
DNormal driving*
BPosition for engine braking
Selecting Eco drive mode

3104-7. Driving tips
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Hybrid vehicle driving tips
◆Using Eco drive mode
When using Eco drive mode, the torque corresponding to the accel-
erator pedal depression amount can be generated more smoothly
than it is in normal conditions. In addition, the operation of the air
conditioning system (heating/cooling) will be minimized, improving
the fuel economy. ( P. 233)
◆Use of Hybrid System Indicator
The Eco-friendly driving is possible by keeping the indicate of
Hybrid System Indicator within Eco area. ( P. 115)
◆Shift lever operation
Shift the shift lever to D when stopped at a traffic light, or driving in
heavy traffic etc. Shift the shift lever to P when parking. When using
the N, there is no positive effect on fuel consumption. In the N, the
gasoline engine operates but electricity cannot be generated. Also,
when using the air conditioning system, etc., the hybrid battery
(traction battery) power is consumed.
For economical and ecological driving, pay attention to the fol-
lowing points:

3876-1. Using the air conditioning system and defogger
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Interior features
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■Adjusting the temperature setting
To adjust the temperature set-
ting, turn the temperature con-
trol dial clockwise or
counterclockwise.
If is not pressed, the sys-
tem will blow ambient tempera-
ture air or heated air.
Cooling and dehumidification
function on/off button
Left-hand side temperature
control dial
Left-hand side temperature
display
Fan speed display
Air outlet display
Right-hand side temperature
display
Right-hand side temperature
control dial
Windshield defogger button
Rear window defogger switch/
rear window defogger and out-
side rear view mirror defog-
gers switch (if equipped)
Air outlet selector button
“OFF” button
Fan speed control button
Automatic mode button
Outside/recirculated air mode
button
Dual mode button
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

3936-1. Using the air conditioning system and defogger
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Interior features
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■Operation of the air conditioning system in Eco drive mode
In Eco drive mode, the air conditioning system is controlled as follows to pri-
oritize fuel efficiency:
● Heating/cooling capacity is restricted.
● Outside/recirculated air mode automatically switch depending on the tem-
perature setting or the inside temperature.
● Fan speed restricted when automatic mode is selected.
To improve air conditioning performance, perform the following operations:
● Adjust the fan speed or the setting temperature.
● Turn off Eco drive mode.
■ Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and
the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after is pressed.
■ Fogging up of the windows
● The windows will easily fog up when the humidity in the vehicle is high.
Turning on will dehumidify the air from the outlets and defog the wind-
shield effectively.
● If you turn off, the windows may fog up more easily.
● The windows may fog up if the recirculated air mode is used.

3946-1. Using the air conditioning system and defogger
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■ Outside/recirculated air mode
● When driving on dusty roads such as tunnels or in heavy traffic, set the out-
side/recirculated air mode button to the recirculated air mode. This is effec-
tive in preventing outside air from entering the vehicle interior. During
cooling operation, setting the recirculat ed air mode will also cool the vehicle
interior effectively.
● Outside/recirculated air mode may automatically switch depending on the
temperature setting or the inside temperature.
■ When the outside temperature falls to nearly 0°C (32°F)
The dehumidification function may not operate even when is pressed.
■ When the indicator light on goes off by itself
Press to turn off the dehumidification function and turn it on again.
There may be a problem in the air condi tioning system if the indicator light
goes off again. Turn the air conditioning system off and have it inspected by
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■ Ventilation and air conditioning odors
● To let fresh air in, set the air conditioning system to the outside air mode.
● During use, various odors from inside and outside the vehicle may enter into
and accumulate in the air conditioning system. This may then cause odor to
be emitted from the vents.
● To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air
mode prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time
immediately after the air conditioning system is started in AUTO mode.
■ Air conditioning filter
 P. 474
■ Customization
The air conditioning control of Eco drive mode can be changed to the same
setting as that used in normal drive mode.
(Customizable features P. 609)

4207-1. Maintenance and care
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Clean periodically to prevent the air intake vent from being clogged.
■Method for cleaning the air intake vent
Remove any dust, sand, etc.,
using a vacuum cleaner.
A filter is installed in the air
intake vent.
When the go to service warning light comes on (vehicles with
monochrome display) or “Maintenance required for Traction battery
cooling parts. See owner’s manual.” is displayed on the multi-
information display (vehicles with color display), it is possible that
the filter is clogged. Clean the filter, if necessary.
■Cleaning method for the filter of the cooling air intake vent
The filter is located on lower left
side of the rear seat.
Maintenance for the cooling air intake vent of the hybrid battery
(traction battery)

4237-1. Maintenance and care
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Maintenance and care
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Start the hybrid system and make sure that the go to service warn-
ing light (vehicles with monochrome display) or “Maintenance
required for Traction battery cooling parts. See owner’s manual.” on
the multi-information display (vehicles with color display) turns off.
Vehicles with monochrome display
It may take up to 20 minutes for the light to turns off, after the hybrid
system is started. If the light does not turns off, even though the fil-
ter is clean, consult any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
Vehicles with color display
It may take up to 20 minutes for the message to turns off, after the
hybrid system is started. If the message does not turns off, even
though the filter is clean, consult any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
■ Caring for leather areas
Toyota recommends cleaning the interior of the vehicle at least twice a year to
maintain the quality of the vehicle’s interior.
■ Shampooing the carpets
There are several commercial foaming-type cleaners available. Use a sponge
or brush to apply the foam. Rub in overlapping circles. Do not use water.
Wipe dirty surfaces and let them dry. Excellent results are obtained by keep-
ing the carpet as dry as possible.
■ Seat belts
Clean with mild soap and lukewarm water using a cloth or sponge. Also
check the belts periodically for excessive wear, fraying or cuts.
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