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3217-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_EE_OM99J92E
■Use a CR2016 (vehicles without a smart entry & start system), or CR2032
(vehicles with a smart entry & start system) lithium battery
● Batteries can be purchased at any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, local electrical appliance
shops or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to the local laws.
■ If the key battery is depleted
The following symptoms may occur:
● The smart entry & start system (if equipped) and wireless remote control will
not function properly.
● The operational range will be reduced.
WARNING
■ Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
■ Certification for the electronic key battery
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE
INSTRUCTIONS
NOTICE
■ For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
● Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.
Page 341 of 440

341
8When trouble arises
AYGO_EE_OM99J92E
8-1. Essential information
Emergency flashers ........... 342
If your vehicle has to
be stopped in an
emergency ....................... 343
8-2. Steps to take in
an emergency
If your vehicle needs
to be towed ...................... 345
If you think
something is wrong.......... 350
Fuel pump shut off
system ............................ 351
If a warning light turns
on or a warning buzzer
sounds ............................. 352
If you have a flat tire
(vehicles with
a spare tire) ..................... 361
If you have a flat tire
(vehicles without
a spare tire) ..................... 374
If the engine
will not start...................... 388
If the shift lever cannot
be shifted (vehicles
with a multi-mode
manual transmission) ...... 390
If the electronic key does
not operate properly
(vehicles with a smart
entry & start system)........ 391
If the vehicle battery
is discharged ................... 394
If your vehicle overheats .... 398
If the vehicle becomes
stuck ................................ 402
Page 344 of 440
3448-1. Essential information
AYGO_EE_OM99J92E
WARNING
■ If the engine has to be turned off while driving
● Power assist for the brakes and steering wheel will be lost, making the
brake pedal harder to depress and the steering wheel heavier to turn.
Decelerate as much as possible before turning off the engine.
● Vehicles without a smart entry & start system: Never attempt to remove
the key, as doing so will lock the steering wheel.
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3598-2. Steps to take in an emergency
8
When trouble arises
AYGO_EE_OM99J92E
Warning light and warning buzzer list (vehicles with a smart
entry & start system)
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions
Once3 times(Flashes in yellow)
Smart entry & start system indicator light
(vehicles with a multi-mode manual trans-
mission)
The electronic key was carried outside the
vehicle and the driver’s door was opened
and closed while the engine switch was in a
made other than off.
→ Turn the engine switch off or bring the
electronic key back into the vehicle.
Once3 times(Flashes in yellow)
Smart entry & start system indicator light
Indicates that a door other than the driver’s
door has been opened and closed with the
engine switch in any mode other than off
and the electronic key outside of the detec-
tion area.
→ Confirm the location of the electronic
key.
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator light
Indicates that the electronic key is not
present when attempting to start the
engine.
→ Confirm the location of the electronic
key.
9 times(Flashes in yellow)
Smart entry & start system indicator light
An attempt was made to drive when the
regular key was not inside the vehicle.
→ Confirm that the electronic key is inside
the vehicle.
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator light
Indicates that the electronic key battery is
low.
→ Replace the battery. (→P. 320)
Once(Flashes quickly in green for 15 seconds.)
Smart entry & start system indicator light
Indicates that the steering lock has not
been released.
→ Release the steering lock. (→P. 157)
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3608-2. Steps to take in an emergency
AYGO_EE_OM99J92E
Once(Flashes in yellow for 60 seconds.)
Smart entry & start system indicator light
• When the doors were unlocked with the
mechanical key and then the engine
switch was pressed, the electronic key
could not be detected in the vehicle.
• The electronic key could not be detected
in the vehicle even after the engine switch
was pressed two consecutive times.
→ Touch the electronic key to the engine
switch while depressing the brake
pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions
Page 391 of 440
3918-2. Steps to take in an emergency
8
When trouble arises
AYGO_EE_OM99J92E
If the electronic key does not operate properly
(vehicles with a smar t entr y & star t system)
Use the mechanical key ( →P. 94)
in order to perform the following
operations:
Locks all the doors
Unlocks all the doors
If communication between the electronic key and vehicle is
interrupted ( →P. 115) or the electronic key cannot be used
because the battery is depleted, the smart entry & start system
and wireless remote control cannot be used. In such cases, the
doors can be opened and the engine can be started by following
the procedure below.
Locking and unlocking the doors
1
2
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3928-2. Steps to take in an emergency
AYGO_EE_OM99J92E
Ensure that the shift lever is in N and depress the brake pedal
(multi-mode manual transmission) or clutch pedal (manual trans-
mission).
Touch the corner of the elec-
tronic key with the indicator to
the engine switch.
When the electronic key is
detected, a buzzer sounds and the
engine switch will turn to IGNITION
ON mode.
When the smart entry & start sys-
tem is deactivated in customization
setting, the engine switch will turn
to ACCESSORY mode.
Firmly depress the brake pedal (multi-mode manual transmission)
or clutch pedal (manual transmission) and check that smart entry &
start system indicator light (green) turns on.
Press the engine switch.
In the event that the engine still cannot be started, contact any autho-
rized Toyota dealer or repairer, or another duly qualified and equipped
professional.
Starting the engine
1
2
3
4
Page 393 of 440
3938-2. Steps to take in an emergency
8
When trouble arises
AYGO_EE_OM99J92E
■Stopping the engine
Shift the shift lever to N and press the engine switch as you normally do when
stopping the engine.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
( →P. 319)
■ Changing engine switch modes
Release the brake pedal (multi-mode m anual transmission) or clutch pedal
(manual transmission) and press t he engine switch in step above.
The engine does not start and modes will be changed each time the switch is
pressed. ( →P. 156)
■ When the electronic key does not work properly
● Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on.
(Customizable features: →P. 421)
● Check if battery-saving mode is set. If it is set, cancel the function.
( →P. 115)
3