2017 TOYOTA YARIS HYBRID key battery

3697-3. Do-it-yourself maintenance
7
Maintenance and care
YARIS_HV_OM_Europe_OM52G76E
Wireless remote control/electronic key bat-
ter y
● Flathead screwdriver
● Lithium battery CR2016 (vehicles without a smart entry & start sys-
tem), or CR2032 (vehicles with a smart entry & start system)
Vehicles without a smart entry & start system
Lift the cover.
Insert the screwdriver in the slot
and push down.
To prevent damage to the key,
cover the tip of the screwdriver with
a tape.
Remove the cover.
Insert the screwdriver in the bottom
of the key and push down.
: If equipped
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
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2

3707-3. Do-it-yourself maintenance
YARIS_HV_OM_Europe_OM52G76E
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
Vehicles with a smart entry & start system
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a tape.
Remove the battery cover.
3
1
2
3

3717-3. Do-it-yourself maintenance
7
Maintenance and care
YARIS_HV_OM_Europe_OM52G76E
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
■ 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 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.
4
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 lithium battery
CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN
INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO
THE INSTRUCTIONS

393
8When trouble arises
YARIS_HV_OM_Europe_OM52G76E
8-1. Essential information
Emergency flashers ........... 394
If your vehicle has to
be stopped in
an emergency .................. 395
8-2. Steps to take in
an emergency
If your vehicle needs to
be towed .......................... 397
If you think something is
wrong ............................... 403
If a warning light turns on
or a warning buzzer
sounds ............................. 404
If you have a flat tire
(vehicles with
a spare tire) ..................... 415
If you have a flat tire
(vehicles with
an emergency tire
puncture repair kit)........... 430
If the hybrid system will
not start............................ 446
If the electronic key does
not operate properly
(vehicles with a smart
entry & start system)........ 448
If the vehicle 12-volt
battery is discharged ....... 450
If your vehicle overheats .... 455
If the vehicle becomes
stuck ................................ 460

4148-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52G76E
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator
Indicates that the electronic key is not
present when attempting to start the hybrid
system.
 Confirm the location of the electronic
key.
9 times(Flashes in yellow)
Smart entry & start system indicator
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
Indicates that the electronic key battery is
low.
 Replace the battery. (P. 369)
Once(Flashes quickly in green for 15 seconds.)
Smart entry & start system indicator
Indicates that the steering lock has not
been released.
 Release the steering lock. (P. 185)
Once(Flashes in yellow for 30 seconds.)
Smart entry & start system indicator
• When the doors were unlocked with the
mechanical key and then the power
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 power switch
was pressed two consecutive times.
 Touch the electronic key to the power
switch while depressing the brake
pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions

4468-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52G76E
If the hybrid system will not start
One of the following may be the cause of the problem:
● Vehicles with a smart entry & start system: The electronic key may
not be functioning properly. ( P. 449)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 209)
● There may be a malfunction in the immobilizer system. (P. 8 4 )
● There may be a malfunction in the steering lock system.
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 447)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 450)
● The 12-volt battery terminal connections may be loose or corroded.
( P. 343)
Reasons for the hybrid system not starting vary depending on
the situation. Check the following and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 178, 182)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

4488-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52G76E
If the electronic key does not operate properly
(vehicles with a smart entr y & start system)
Use the mechanical key ( P. 112)
in order to perform the following
operations:
Unlocks all the doors
Locks all the doors
If communication between the electronic key and vehicle is
interrupted ( P. 137) 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 hybrid system can be started by
following the procedure below.
Locking and unlocking the doors
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2

4498-2. Steps to take in an emergency
8
When trouble arises
YARIS_HV_OM_Europe_OM52G76E
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Toyota emblem side
of the electronic key to the
power switch.
The power switch will turn to ON
mode.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm will
sound to indicate that the start
function cannot detect the elec-
tronic key.
When the smart entry & start system is deactivated in customization set-
ting, the power switch will turn to ACCESSORY mode.
Firmly depress the brake pedal and check that (green)
turns on.
Press the power switch.
In the event that the hybrid system still cannot be operated, contact
any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
■ Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when
stopping the hybrid system.
■ 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. 369)
■ Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 183)
■ 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. 475)
Starting the hybrid system
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