2021 TOYOTA YARIS engine

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4-5. Using the driving support systems
ficient or changes suddenly.
●When a sign intended for trucks, etc.,
is recognized.
●The vehicle is driven in a country with
a different direction of traffic.
●The navigation system map data is
outdated.
●The navigation system is not operat-
ing.
●The speed information displayed on
the meter and that displayed on the
navigation system may be different
due to the navigation system using
map data.
■Speed limit sign display
If the engine switch was last turned off
while a speed limit sign was displayed
on the multi-information display, the
same sign displays again when the
engine switch is turned to ON.
■If “RSA Malfunction Visit Your
Dealer” is shown
The system may be malfunctioning.
Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
■Customization
Some functions can be customized.
(→P.422)
*: If equipped
■Stopping the engine
Vehicles with a Multidrive
While driving with the D shift posi-
tion selected, depress the brake
pedal and stop the vehicle. The
engine will stop automatically.
When the engine stops, the Stop &
Start indicator will illuminate.
Stop & Start system*
Multidrive: The Stop & Start
system stops and starts the
engine according to brake
pedal or shift lever operation
when the vehicle is stopped,
such as at a stoplight, inter-
section, etc., in order to
improve fuel economy and
reduce noise pollution caused
by the engine idling.
Manual transmission: The
Stop & Start system stops and
starts the engine according to
clutch pedal or shift lever
operation when the vehicle is
stopped, such as at a stop-
light, intersection, etc., in
order to improve fuel economy
and reduce noise pollution
caused by the engine idling.
Stop & Start system opera-
tion

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4-5. Using the driving support systems
Driving
Vehicles with a manual transmis-
sion
1Fully depress the clutch pedal
and depress the brake pedal to
stop the vehicle.
2Move the shift lever to N and
release the clutch pedal. The
engine will stop automatically.
When the engine is stopped by the Stop
& Start system, the Stop & Start indica-
tor will illuminate.
■Restarting the engine
Vehicles with a Multidrive
Release the brake pedal. The
engine will start automatically.
When the engine starts, the Stop &
Start indicator will turn off.
Vehicles with a manual transmis-
sion
With the shift lever in N, depress
the clutch pedal. The engine will start automatically.
When the engine starts, the Stop &
Start indicator will turn off.
Press the Stop & Start cancel
switch to disable the Stop & Start
system.
The Stop & Start cancel indicator
will illuminate.
Pressing the switch again will enable
the Stop & Start system and the Stop &
Start cancel indicator will turn off.
■Automatic enabling of the Stop &
Start system
If the Stop & Start system is disabled
using the Stop & Start cancel switch, it
will be automatically re-enabled once
the engine switch is turned off and then
the engine is started.
When the engine is stopped by the
Stop & Start system when the vehi-
cle is on an incline, when the brake
pedal is released, brake force is
temporarily maintained to prevent
Disabling the Stop & Start
system
Hill-start assist control
(vehicles with a Multidrive)

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4-5. Using the driving support systems
the vehicle from rolling backwards
before the engine is restarted and
drive force is generated. When
drive force is generated, the main-
tained brake force is automatically
canceled.
zThis function operates on flat
surfaces as well as steep
inclines.
zSound may be generated from
the brake system, but this does
not indicate a malfunction.
zBrake pedal response may
change and vibration may occur,
but this does not indicate a mal-
function.
■Points for use
●If the engine switch is pressed when
the engine is stopped by the Stop &
Start system, the engine will not be
able to be restarted by the automatic
engine start function. In this case,
restart the engine using the normal
engine starting procedure. (→ P.158,
159)
●When the engine is being restarted by
the Stop & Start system, the power
outlets may be temporarily unusable,
but this does not indicate a malfunc-
tion.
●Installation and removal of electrical
components and wireless devices
may affect the Stop & Start system.
Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer for details.
●When stopping the vehicle for a lon-
ger period of time, turn the engine
switch off to stop the engine com-
pletely.
●When the engine is restarted by the
Stop & Start system, the steering
wheel may temporarily feel heavy.
■Operating conditions
●The Stop & Start system is operational
when all of the following conditions
are met:
• The vehicle has been driven a certain
amount of time.
• The brake pedal is being depressed
firmly.
• The clutch pedal is not depressed
(vehicles with a manual transmission).
• The shift lever is in D or P (vehicles
with a Multidrive).
• The shift lever is in N (vehicles with a
manual transmission).
• The driver’s seat belt is fastened.
• The driver’s door is closed.
• The selected driving mode is Normal
or Eco drive mode.
• The windshield defogger is off. (vehi-
cles without a manual air conditioning
system)
• The accelerator pedal is not being
depressed (vehicles with a Multidrive).
• The engine is adequately warmed up.
• The outside temperature is -5°C
(23°F) or higher.
• The hood is closed. (→P.233)
●In the following situations the engine
may not be stopped by the Stop &
Start system. This is not a malfunction
of the Stop & Start system.
• When the air conditioning system is
being used.
• When the battery is undergoing a peri-
odic recharge.
• When the battery is not sufficiently
charged, such as if the vehicle has
been parked for a long time and the
battery charge has decreased, the
electric load is large, the battery fluid
temperature is excessively low or the
battery has deteriorated.
• When the brake booster vacuum is
low.
• When the elapsed time since the
engine was restarted is short.
• When the vehicle is stopped fre-
quently, such as when in a traffic jam.
• When the engine coolant temperature
or transmission fluid temperature is
extremely low or high.
• When the vehicle is stopped on a

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4-5. Using the driving support systems
Driving
steep incline (vehicles with a Multid-
rive).
• When the steering wheel is being
operated.
• When the vehicle is being driven in a
high altitude area.
• When the battery fluid temperature is
extremely low or high.
• For a while after the battery terminals
have been disconnected and recon-
nected.
●When the engine is stopped by the
Stop & Start system, the engine will be
restarted automatically if any of the
following conditions are met:
(To enable the engine to be stopped by
the Stop & Start system again, drive the
vehicle.)
• The air conditioning system is turned
on. (vehicles without a manual air
conditioning system)
• The windshield defogger is turned on.
(vehicles without a manual air condi-
tioning system)
• The shift lever is shifted from D to
except for P (When the engine is
stopped by the Stop & Start system
when the shift lever is in D.) (vehicles
with a Multidrive).
• The shift lever is shifted from P.
(When the engine is stopped by the
Stop & Start system when the shift
lever is in P.) (vehicles with a Multid-
rive)
• The driver’s seat belt is unfastened.
• The driver’s door is opened.
• The driving mode is changed from
Normal or Eco drive mode to another
mode.
• The Stop & Start cancel switch is
pressed.
• The steering wheel is operated.
• The accelerator pedal is depressed
(vehicles with a Multidrive).
• The vehicle starts to roll on an incline.
●When the engine is stopped by the
Stop & Start system, the engine may
restart automatically in the following
situations: (To enable the engine to be
stopped by the Stop & Start system
again, drive the vehicle.)• When the brake pedal is pumped or
strongly depressed.
• When the air conditioning system is
being used.
• When a switch of the air conditioning
system is operated (windshield defog-
ger switch, etc.).
• If the battery charge becomes low.
■When the hood is opened
●If the hood is opened while the engine
is stopped by the Stop & Start system,
the engine will stall and will not be
able to be restarted by the automatic
engine start function. In this case,
restart the engine using the normal
engine starting procedure. (→P.158,
159)
●If the hood is closed after the engine
is started with the hood open, the Stop
& Start system will not operate. Close
the hood, turn the engine switch off,
wait 30 seconds or more, and then
start the engine.
■Air conditioning system operation
while the engine is stopped by the
Stop & Start system
Vehicles with an automatic air condition-
ing system: When the air conditioning is
in automatic mode and the engine is
stopped by the Stop & Start system, the
fan may operate at a low speed in order
to prevent the temperature in the cabin
from increasing or decreasing or may be
stopped.
To prioritize air conditioning system per-
formance when the vehicle is stopped,
disable the Stop & Start system by
pressing the Stop & Start cancel switch.
●If the windshield is fogged up
Turn the windshield defogger on.
(→P.280, 285)
If the windshield fogs up frequently,
press the Stop & Start cancel switch to
disable the Stop & Start system.
●If an odor is emitted from the air con-
ditioning system
• Vehicles with a manual air condition-
ing system

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4-5. Using the driving support systems
If the idling stop time setting is set to
“Extended”, change it to “Standard”. If
an odor is emitted when the idling stop
time setting is set to “Standard”, press
the Stop & Start cancel switch to deacti-
vate the Stop & Start system.
• Vehicles with an automatic air condi-
tioning system
Press the Stop & Start cancel switch to
deactivate the Stop & Start system.
■Changing the idling stop time with
the air conditioning system on
The length of time the Stop & Start sys-
tem will operate when the air condition-
ing system is on can be changed in
of the multi-information display (→P.93,
99). (The length of time the Stop & Start
system will operate when the air condi-
tioning system is off cannot be
changed.)
■Displaying the Stop & Start system
status
→P.98, 104
■Multi-information display mes-
sages
If the following situations, and a
message may be displayed on the multi-
information display.
●When the engine cannot be stopped
by the Stop & Start system
“Press Brake More to Activate”
*
• The brake pedal is not sufficiently
depressed.
→If the brake pedal is depressed fur-
ther, the system will operate.
*: Vehicles with a Multidrive
“Non-Dedicated Battery”
• A battery not designed for use with a
Stop & Start system may have been
installed.
→Have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
“Battery Charging”
• The battery charge may be low.
→Stopping of the engine is temporarily
prohibited to prioritize charging of the
battery. After the engine runs for a cer-
tain amount of time, the system will be
enabled.
• A refresh charge may be occurring
→After a refresh charge for up to an
hour completes, the system can be
operated.
• If displayed continuously for a long
time (more than an hour)
→The battery may be deteriorated. Con-
tact any authorized Toyota retailer or
Toyota authorized repairer, or any reli-
able repairer for details.
“Stop & Start Unavailable”
• The Stop & Start system is temporarily
disabled.
→Allow the engine to run for some time.
• The engine may have been started
with the hood open.
→Close the hood, turn the engine
switch off, wait for 30 seconds or more,
and then start the engine.
“In Preparation”
• The vehicle is being driven in a high
altitude area.
• Vehicles with a Multidrive: The brake
booster vacuum is low.
→When the brake booster vacuum
reaches a predetermined level, the sys-
tem will be enabled.
“For Climate Control”
• The air conditioning system is being
used when the ambient temperature is
high or low.

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4-5. Using the driving support systems
Driving
→If the difference between the set tem-
perature and cabin temperature
becomes small, the system will be
enabled.
• The windshield defogger is on.
●When the engine automatically
restarts while stopped by the Stop &
Start system
“In Preparation”
*
• The brake pedal has been depressed
further or pumped.
→The system will be enabled after the
engine runs and the brake booster vac-
uum reaches a predetermined level.
*: Vehicles with a Multidrive
“For Climate Control”
• The air conditioning system has been
turned on or is being used.
• The windshield defogger has been
turned on.
“Battery Charging”
• The battery charge may be low.
→The engine is restarted to prioritize
battery charging. After the engine runs
for a certain amount of time, the system
will be enabled. (vehicle with a Manual
Transmission)
→The system will be enabled after the
engine runs to sufficiently charge the
battery. (vehicle with a Multidrive)
●When the engine cannot be restarted
by the Stop & Start system
“Shift to N and Press Clutch to Restart”
*
→When the engine is stopped by the
Stop & Start system, the shift lever was
moved to a position other than N without
depressing the clutch pedal.
*: Vehicles with a manual transmission
■When a buzzer sounds (vehicles
with a Multidrive)
If the driver’s door is opened when the
engine is stopped by the Stop & Start
system and the shift lever is in D, a
buzzer will sound and the Stop & Start
system indicator will flash. To stop the
buzzer, close the driver’s door.
■The Stop & Start system protection
function
●When the volume of the audio system
is excessively high, sound output from
the audio system may suddenly be cut
off in order to reduce battery con-
sumption. To prevent the audio sys-
tem from being cut off, keep the
volume of audio system at a moderate
level. If the audio system has been cut
off, turn the engine switch off, wait for
3 seconds or more and then turn it to
ACC or ON to re-enable the audio
system.
●The audio system may not be acti-
vated if the battery terminals are dis-
connected and then reconnected. If
this occurs, turn the engine switch off
and then repeat the following opera-
tion twice to activate the audio system
normally.
• Turn the engine switch to ON and
then to off.
■Replacing the battery
→P. 4 0 4
■If the Stop & Start cancel indicator
flashes continuously
The system may be malfunctioning.
Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
■If “Stop & Start System Malfunction
Visit Your Dealer” is displayed on
the multi-information display
The system may be malfunctioning.
Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.

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4-5. Using the driving support systems
WARNING
■When the Stop & Start system is operating
Make sure to disable the Stop & Start system while the vehicle is in a poorly ventilated area.
If not disabled, the engine may be automatically restarted unexpectedly, causing exhaust gases to collect and
enter the vehicle, possibly resulting in death or a serious health hazard.
●Do not leave the vehicle while the
engine is stopped by the Stop & Start system (while the Stop & Start indicator is on). An accident may
occur due to the automatic engine start function.
●Depress the brake pedal and apply the parking brake when necessary while the engine is stopped by the
Stop & Start system (while the Stop & Start indicator is on).
NOTICE
■To ensure the system operates correctly
If any of the following situations occur, the Stop & Start system may not oper-ate correctly. Have your vehicle
inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
●While the driver’s seat belt is fas-tened, the driver’s and front pas-senger’s seat belt reminder light
flashes.
●Even though the driver’s seat belt is
not fastened, the driver’s and front passenger’s seat belt reminder light does not illuminate.
●Even though the driver’s door is closed, the open door warning light
is illuminated or the interior light is illuminated when the interior light switch is in the door position.
●Even though the driver’s door is open, the open door warning light does not illuminate or the interior
light does not illuminate when the interior light switch is in the door position.
■If the engine stalls (vehicles with a manual transmission)
If the Stop & Start system is enabled and the clutch pedal is depressed quickly, the engine may restart.

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4-5. Using the driving support systems
Driving
tance to the object.
Front corner sensor detection
Front center sensor detection
Rear corner sensor detection
Rear center sensor detection
Use the meter control switches to
enable/disable the Toyota parking
assist-sensor. ( →P.94, 100)
1 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select .
2 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select and then press .
When the Toyota parking assist-
sensor function is disabled, the
Toyota parking assist-sensor OFF
indicator ( →P.84) illuminates.
To re-enable the system when it
was disabled, select on the
multi-information display, select
and then on. If disabled using this
method, the system will not be re-
enabled by turning the engine
switch off and then to ON.
Turning Toyota parking
assist-sensor on/off
WARNING
■When using the Toyota parking
assist-sensor
Observe the following precautions. Failing to do so may result in the vehi-
cle being unable to be driven safely and possibly cause an accident.
●Do not use the sensor at speeds in excess of 10 km/h (6 mph).
●The sensors’ detection areas and reaction times are limited. When moving forward or reversing, check
the areas surrounding the vehicle (especially the sides of the vehicle) for safety, and drive slowly, using
the brake to control the vehicle’s speed.
●Do not install accessories within the sensors’ detection areas.
●The area directly under the bum-pers is not detected.Thin posts or objects lower than the
sensor may not be detected when approached, even if they have been detected before.
■When to disable the function
In the following situations, disable the
function as it may operate even though there is no possibility of a colli-sion.
●The vehicle is equipped with a fender pole, wireless antenna or fog
lights.