stop start TOYOTA YARIS 2020 Service Manual

3454-6. Using the driving support systems
4
Driving
YARIS_F_OM_Europe_OM52A54E
Vehicles with a Multidrive
Release the brake pedal. When the shift lever is in N or P, depress
brake pedal and shift the shift lever to D or M.
The engine will restart. The Stop & Start indicator will go off.
Vehicles with a manual transmission
Check that the shift lever is in N and depress the clutch pedal.
The engine will restart. The Stop & Start indicator will go off. (In this situa-
tion, releasing the clutch pedal will not stop the engine again.)
Press the Stop & Start cancel
switch to disable the Stop & Start
system.
The stop & start cancel indicator
will come on.
The engine will not stop at each
stop when the brake pedal (Multid-
rive) or clutch pedal (manual trans-
mission) is depressed to stop the
engine ( P. 344).
Pressing the switch again to re-
enable the Stop & Start system.
Restarting the engine
Disabling the Stop & start system

3464-6. Using the driving support systems
YARIS_F_OM_Europe_OM52A54E■
If the Stop & Start cancel switch is pressed while the vehicle is
stopped
●When the engine is stopped by the Stop & Start system, pressing
the Stop & Start cancel switch will restart the engine.
From the next time the vehicle is stopped (after Stop & Start sys-
tem has been turned off), the engine will not be stopped.
●With the Stop & Start system disabled, pressing the Stop & Start
cancel switch will re-enable the system but not stop the engine.
From the next time the vehicle is stopped (after Stop & Start sys-
tem has been turned on), the engine will be stopped.
After the engine is stopped by the Stop & Start system when the vehi-
cle is on an incline, brake force is temporarily maintained to prevent
rolling backwards until the engine is restarted and drive force is gener-
ated.
When drive force is generated, the maintained brake force is automat-
ically canceled.
●This function operates on flat surfaces as well as steep inclines.
●Sound may be generated from the brakes, but this is not a malfunc-
tion.
●Brake pedal response may change and vibration may occur, but
these are not malfunctions.
Hill-start assist control (vehicles with a Multidrive)

3474-6. Using the driving support systems
4
Driving
YARIS_F_OM_Europe_OM52A54E
■Operating conditions
●The Stop & Start system is operational when all of the following conditions
are met:
• The engine is adequately warmed up.
• The battery is sufficiently charged.
• The driver’s door is closed.
• The driver’s seat belt is fastened.
• The hood is closed.
• The outside temperature is -5°C (23°F) or higher.
• The accelerator pedal is not being depressed.
• Vehicles with a Multidrive: The brake pedal is firmly depressed.
• Vehicles with a Multidrive: The shift lever is not in R.
• Vehicles with a manual transmission: The clutch pedal is not being
depressed.
• Vehicles with a manual transmission: The shift lever is in N.
●In the following circumstances the engine may not be stopped by the Stop &
Start system. This is not a malfunction of the Stop & Start system.
• Engine coolant temperature or transmission fluid temperature is too low
or too high.
• The outside temperature is extremely low.
• The air conditioning system is being used when the outside temperature
is high or low.
• The air conditioning system is being used when the vehicle interior tem-
perature is extremely high such as after the vehicle was parked under the
hot sun.
• Vehicles with an automatic air conditioning system: The windshield
defogger is being used.
• The battery is undergoing a periodic recharge.
• 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 bat-
tery has deteriorated.
• The battery fluid temperature is extremely low or high.
• Due to traffic or other circumstances the vehicle is stopped repeatedly,
resulting in the amount of time the engine is stopped by the Stop & Start
system to become excessively high.
• The driver’s seat belt is unfastened.
• The driver’s door is opened.
• The hood is opened.
• The vehicle is stopped on a steep hill.
• The brake booster vacuum is low.
• A large amount of electricity is being used.
• At high altitude.
When the above conditions improve, the Stop & Start system will stop and
restart the engine from the next time the vehicle is stopped.

3484-6. Using the driving support systems
YARIS_F_OM_Europe_OM52A54E●In the following situations, the engine may start even without the brake
pedal being released (Multidrive) or clutch pedal being depressed (manual
transmission).
• The brake pedal is pumped or strongly depressed.
• The air conditioning system is being used or turned on.
• Vehicles with an automatic air conditioning system: The windshield
defogger is turned on.
• The battery is not sufficiently charged.
• The vehicle starts to roll on an incline.
• Vehicles with a Multidrive: The hood is opened when the shift lever is in N
or P.
• Vehicles with a Multidrive: The shift lever is shifted into a position other
than N or P.
• The accelerator pedal is depressed.
• A large amount of electricity is being used.
• The driver’s door is opened.
• The driver’s seat belt is unfastened.
●In the following situations, it may take longer than normal for the Stop & Start
system to activate.
• The battery is discharged.
• After the battery terminals have been disconnected and reconnected
after a battery replacement, etc.
• The engine coolant temperature is low.
■Automatic reactivation of the Stop & Start system
Vehicles without a smart entry & start system
Even if the Stop & Start system is disabled by the Stop & Start cancel switch,
it will be automatically re-enabled once the engine switch is turned to the
“LOCK” position then to the “START” position.
Vehicles with a smart entry & start system
Even if the Stop & Start system is disabled by the Stop & Start cancel switch,
it will be automatically re-enabled once the engine switch is turned off then
the engine is started.

3494-6. Using the driving support systems
4
Driving
YARIS_F_OM_Europe_OM52A54E■The Stop & Start system protection feature
Vehicles without a smart entry & start system
When an excessively loud sound is being projected by the audio system, the
audio system may be automatically cut off in order to maintain power for the
Stop & Start system function.
If this occurs, turning the engine switch to the “LOCK” position then to the
“ACC” or “ON” position re-enables the audio system.
Vehicles with a smart entry & start system
When an excessively loud sound is being projected by the audio system, the
audio system may be automatically cut off in order to maintain power for the
Stop & Start system function.
If this occurs, turning the engine switch off then to ACCESSORY mode or
IGNITION ON mode re-enables the audio system.
■Hood
Even 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. (P. 241, 243)
Vehicles with a Multidrive: If the hood is opened while the engine is stopped
by the Stop & Start system and the shift lever is in N or P, the engine will
restart.
■When to use the Stop & Start system
When the system does not operate, is canceled, or is malfunctioning, warning
messages (vehicles with color display only) and a warning buzzer are used to
inform the driver. (P. 350)
■Stop & Start system warning buzzer
If the engine is stopped by the Stop & Start system and either of the following
actions is performed, a buzzer will sound and the Stop & Start indicator will
flash (Multidrive), or a buzzer will sound (manual transmission). This indi-
cates that the engine is only stopped by the Stop & Start system, not that the
engine has been turned off completely.
Vehicles with a Multidrive
The driver’s door is opened when the shift lever is in D or M.
Vehicles with a manual transmission
The shift lever is shifted into a position other than N with the clutch pedal
released.

3504-6. Using the driving support systems
YARIS_F_OM_Europe_OM52A54E■Multi-information display messages (vehicles with color display)
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
MessageDetails
“For climate con-
trol.”
• The air conditioning system is being
used when the ambient temperature is
high or low.
If the difference between the set tempera-
ture and cabin temperature is small, the
system will be enabled.
• The windshield defogger is turned on.
“Battery charging.”
• The battery charge amount may be low.
Engine stop is temporarily prohibited to
prioritize charging of the battery, but if the
engine is operated for a short while,
engine stop is allowed.
• A refresh charge may be occurring
such as when the battery is undergoing
a periodic recharge, for a while after the
battery terminals have been discon-
nected and reconnected, for a while
after the battery has been replaced, etc.
After a refresh charge of approximately 5
to 60 minutes completes, the system can
be operated.
• The engine may have been started with
the hood opened.
Close the hood, turn the engine switch off,
wait 30 seconds or more, and then start
the engine.
●If the message is displayed continuously
(60 minutes or more), the battery may
have deteriorated. Contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
“For brake sys-
tem.”
• The vehicle is being driven in a high
altitude area.
• The brake booster vacuum is low.
When the brake booster vacuum reaches
a predetermined level, the system will be
enabled.

3514-6. Using the driving support systems
4
Driving
YARIS_F_OM_Europe_OM52A54E●When the engine automatically restarts while stopped by the Stop & Start
system“Bonnet open.”
The engine has been started with the
hood opened.
To enable the system, close the hood, turn
the engine switch off, wait for a short
while, and then start the engine.
“Driver seat belt
unbuckled.”
The driver seat belt is not fastened.
MessageDetails
MessageDetails
“For climate con-
trol.”
• The air conditioning system has been
turned on or is being used.
• The windshield defogger is turned on.
“For brake sys-
tem.”
The brake pedal has been depressed fur-
ther or pumped.
The system will be enabled after the
engine runs and the brake booster vac-
uum reaches a predetermined level.
“Battery charging.”
The battery charge amount may be low.
The engine is restarted to prioritize battery
charging. Operating the engine for a short
while allows the system to recover.
“Bonnet open.”
The hood has been opened.
“Driver seat belt
unbuckled.”
The driver seat belt has been unfastened.

3524-6. Using the driving support systems
YARIS_F_OM_Europe_OM52A54E●Vehicles with a manual transmission: When the engine cannot be restarted
by the Stop & Start system
■If the Stop & Start cancel indicator continues to flash
The Stop & Start system may be malfunctioning. Contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■If the windshield is fogged up while the engine is stopped by the Stop &
Start system
Vehicles with an automatic air conditioning system
Turn the windshield defogger on. (The engine will start due to the automatic
engine start function.) (P. 452)
Vehicles with a manual air conditioning system
Vehicles with a Multidrive:
Restart the engine by releasing the brake pedal (when the shift lever is in D
or M) or depress the brake pedal and shift the shift lever to D or M (when
the shift lever is in N or P) (P. 345), or by pressing the Stop & Start cancel
switch, and then set the air outlet selector dial to . (P. 442)
Vehicles with a manual transmission:
Restart the engine by depressing the clutch pedal (P. 345), or by pressing
the Stop & Start cancel switch, and then set the air outlet selector dial to
. (P. 442)
If the windshield fogs up frequently, press the Stop & Start cancel switch to
deactivate the system.
MessageDetails
“Stop & Start sys-
tem active. Shift to
N and depress
clutch to restart.”
The shift lever has been shifted from N to
another position with the clutch pedal
released.
To restart the engine, shift the shift lever to
N and then depress the clutch pedal.

3534-6. Using the driving support systems
4
Driving
YARIS_F_OM_Europe_OM52A54E
■ Air conditioning system operation while the engine is stopped by the
Stop & Start system
● If the air conditioning system is being used in automatic mode, the fan
speed may be reduced or the fan may be stopped while the engine is
stopped by the Stop & Start system in order to reduce changes in the cabin
temperature.
● To ensure air conditioning system performance when the vehicle is stopped,
disable the Stop & Start system by pressing the Stop & Start cancel switch.
■ The Stop & Start system operation time and Stop & Start system total
operation time display
 P. 123
■ When replacing the battery
 P. 637
WARNING
■When the Stop & Start system is operating
● Keep the shift lever in N (manual transmission) and apply the brake pedal
or parking brake for safety while the engine is stopped due to the Stop &
Start system (while the Stop & Start indicator is on).
Unexpected accidents may occur due to the automatic engine start func-
tion.
● Do not leave the vehicle while the engine is stopped due to the Stop &
Start system (while the Stop & Start indicator is on).
Unexpected accidents may occur due to the automatic engine start func-
tion.
● Ensure that the engine is not stopped by the Stop & Start system while the
vehicle is in a poorly ventilated area. The engine may restart due to the
automatic engine start function, causing exhaust gases to collect and
enter the vehicle and resulting in death or a serious health hazard.

3544-6. Using the driving support systems
YARIS_F_OM_Europe_OM52A54E
NOTICE
■To ensure the system operates correctly
If any one of the following situations occurs, the Stop & Start system may
not operate correctly, thus, please have your vehicle checked by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
● While the driver’s seat belt is fastened, the driver’s and front passenger’s
seat belt reminder light flashes.
● Even when the driver’s seat belt is not fastened, the driver’s and front pas-
senger’s seat belt reminder light remains off.
● Vehicles with monochrome display: Even though the driver’ 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.
● Vehicles with color display: Even though the driver’ door is closed, the
open door warning is displayed on the multi-information display or the inte-
rior light is illuminated when the interior light switch is in the door position.
● Vehicles with monochrome display: Even though the driver’ 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.
● Vehicles with color display: Even though the driver’ door is open, the open
door warning is not displayed on the multi-information display or the inte-
rior light does not illuminate when the interior light switch is in the door
position.