2018 TOYOTA YARIS HATCHBACK key battery

943-1. Key information
■If you lose your keys
New genuine keys can be made by your Toyota dealer using the other key
and the key number stamped on your key number plate. Keep the plate in a
safe place such as your wallet, not in the vehicle.
■ When riding in an aircraft
When bringing a key with wireless remote control function onto an aircraft,
make sure you do not press any buttons on the key while inside the aircraft
cabin. If you are carrying a key in your bag etc., ensure that the buttons are
not likely to be pressed accidentally. Pressing a button may cause the key to
emit radio waves that could interfere with the operation of the aircraft.
■ Panic mode (if equipped)
■ Conditions affecting operation (wireless remote control)
The wireless remote control function may not operate normally in the follow-
ing situations:
●When the wireless key battery is depleted
● Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electrical
noise
● When carrying a portable radio, cellul ar phone or other wireless communi-
cation devices
● When the wireless key is in contact with, or is covered by a metallic object
● When other wireless keys (that emit radio waves) are being used nearby
● If window tint with a metallic content or metallic objects are attached to the
rear window
When is pressed for longer than about
1 second, an alarm will sound intermit-
tently and the vehicle lights will flash to
deter any person from trying to break into
or damage your vehicle.
To stop the alarm, press any button on the
wireless remote control.

953-1. Key information
3
Operation of each component
■Key battery depletion
If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary.
■ Customization that can be conf igured at your Toyota dealer
Settings (e.g. wireless remote control system) can be changed.
(Customizable features: →P. 488)
■ Certification for the wireless remote control
U.S.A.
FCC ID: HYQ23AAA
FCC ID: HYQ12BBY
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Canada
NOTE:
This device complies with Industry Canada licence-exempt RSSs.
Operation is subject to the following two conditions: (1) This device may not
cause interference; and (2) This device must accept any interference, includ-
ing interference that may cause undesired operation of the device.
NOTICE
■ To prevent key damage
Observe the following:
● Do not subject the keys to strong shocks, expose them to high tempera-
tures by placing them in direct sunlight, or get them wet.
● Do not expose the keys to electromagnetic materials or attach any mate-
rial that blocks electromagnetic waves to the key surface.
● Do not disassemble the wireless remote control key.

1594-3. Operating the lights and wipers
4
Driving
■Automatic light off system (vehicles with daytime running light system)
● When the headlights are on: The headlights and tail lights turn off 30 sec-
onds after the engine switch is turned to the “ACC” or “LOCK” position and a
door is opened and closed. (The lights turn off immediately if on the key
is pressed after all the doors are locked.)
● When only the tail lights are on: The tail lights turn off automatically if the
engine switch is turned to the “ACC” or “LOCK” position and the driver’s
door is opened.
To turn the lights on again, turn the engine switch to the “ON” position, or turn
the headlight switch to or once and then back to the or
position.
If any of the doors is kept open, the lights automatically turn off after 20 min-
utes.
■ Battery-saving function (vehicles wit h daytime running light system or
Automatic High Beam)
In all following conditions, the headlights and the other remaining lights will go
off automatically after 20 minutes in order to prevent the vehicle battery from
being discharged:
● The engine switch is in the “LOCK” position.
● The headlights and/or tail lights are on.
This function will be canceled in any of the following situations:
● When the engine switch is turned to the “ON” position.
● When the light switch is operated.
● When the door is opened or closed.
■ Customization
Settings (e.g. automatic light off system) can be changed.
(Customizable features: →P. 489)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not
running.

3887-3. Do-it-yourself maintenance
Wireless remote control battery∗
●Flathead screwdriver
● Lithium battery CR2016
Ty p e A
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a tape.
Remove the module.
Open the battery cover using a
coin protected with tape etc.,
and remove the depleted bat-
tery.
Insert a new battery with the “+”
terminal facing up.
∗: If equipped
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2
3

3897-3. Do-it-yourself maintenance
7
Maintenance and care
Ty p e B
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a tape.
To prevent the buttons from being
disassembled, face the button sur-
face downward.
Remove the module.
Open the case cover and
remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
1
2
3

3907-3. Do-it-yourself maintenance
■Use a CR2016 lithium battery
●Batteries can be purchased at your Toyota dealer, 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 wireless remote control will not function properly.
● The operational range will be reduced.
■ When replacing the module (type B only)
Replace the module from right above.
Replacing it from diagonally above may
prevent the key buttons from operating
properly.
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.
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.

506What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your keys, new genuine keys can be made by your Toyota
dealer. (→P. 94)
●Is the key battery weak or depleted? ( →P. 388)
●The function may not operate properly due to the condition of the radio
wave. (→P. 94)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. (→P. 99)
If you have a problem, check the following before contacting
your Toyota dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be ope ned (5-door models only)

507What to do if... (Troubleshooting)
●Vehicles with a manual transmission:
Did you turn the key while firmly depressing the clutch pedal? (→P. 146)
●Vehicles with an automatic transmission:
Is the shift lever in P? (→P. 146)
●Is the battery discharged? ( →P. 450)
●Is the engine switch in the “ON” position?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in the “ON” position. ( →P. 151)
●It is locked to prevent theft of the vehicle if the key is pulled from the engine
switch. (→P. 147)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be oper-
ated if the window lock switch is pressed. ( →P. 122)
If you think something is wrong
The engine does not start
The shift lever cannot be shifted from P even if you depress
the brake pedal (vehicles with an automatic transmission)
The steering wheel cannot be turned after the engine is
stopped
The windows do not open or close by operating the power
window switches