change key battery TOYOTA YARIS 2017 Owners Manual

1063-1. Key information
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■ Electronic key battery depletion (vehicles with a smart entry & start sys-
tem)
● The standard battery life is 1 to 2 years.
● If the battery becomes low, an alarm will sound in the cabin when the engine
stops. ( P. 452)
● As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. ( P. 402)
• The smart entry & start system or the wireless remote control does not
operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
● To avoid serious deterioration, do not leave the electronic key within 1 m
(3 ft.) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Induction cookers
• Table lamps
■ Replacing the battery
 P. 402
■ Confirmation of the registered key number (vehicles with a smart entry &
start system)
The number of keys already registered to the vehicle can be confirmed. Ask
any authorized Toyota dealer or re pairer, or another duly qualified and
equipped professional for details.
■ If a wrong key is used
On some models, the key cylinder rotates freely to isolate inside mechanism.
■ Customization
Settings (e.g. wireless remote control system) can be changed.
(Customizable features: P. 525)

1884-2. Driving procedures
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■ If the engine does not start
● The engine immobilizer system may not have been deactivated. (P. 76)
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.
■ Steering lock
After turning the engine switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function. Operating the
engine switch again automatically cancels the steering lock.
■ When the steering lock cannot be released
Press the engine switch while turning the steering wheel left and right.
■ Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
■ If the system is malfunctioning
 P. 442
■ If the electronic key battery is depleted
 P. 402
■ Operation of the engine switch
If the switch is not pressed shortly and firmly, the engine switch mode may
not change or the engine may not start.
■ If the smart entry & start system has been deactivated in a customized
setting
 P. 525
● On vehicles with a Multidrive, check that
the shift lever is securely set in P. The
engine may not start if the shift lever is
displaced out of P. The smart entry &
start system indicator (green) will flash
quickly.
The smart entry & start system indicator
(green) will flash quickly.
Vehicles with a Multidrive
Check that the shift lever is set in P.
Press the engine switch while turning the
steering wheel left and right.
Vehicles with a manual transmission

2084-3. Operating the lights and wipers
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■ Automatic High Beam (if equipped)
 P. 245
■ Light reminder buzzer
Vehicles without a smart entry & start system
A buzzer sounds when the key is removed from the engine switch and the
driver’s door is opened while the lights are turned on.
Vehicles with a smart entry & start system
A buzzer sounds when the engine switch is turned off and the driver’s door is
opened while the lights are turned on.
■ Battery-saving function
In all conditions following below, the headlights and the other remaining lights
will go off automatically after 20 minutes in order to prevent the vehicle bat-
tery from being discharged:
● The headlights and/or tail lights are on.
● The light switch is in or .
● Vehicles without a smart entry & start system: The engine switch is turned to
the “LOCK” position.
● Vehicles with a smart entry & start system: The engine switch is turned off.
This function will be canceled in any of the following situations:
● Vehicles without a smart entry & start system: When the engine switch is
turned to the “ON” position.
● Vehicles with a smart entry & start system: When the engine switch is
turned to IGNITION ON mode.
● When the light switch is operated.
● When the door is opened or closed.
■ Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: P. 524)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not
running.

3336-2. Using the interior lights
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Interior features
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On
Off
■ Illuminated entry system
Vehicles without a smart entry & start system
The lights automatically turn on/off according to the engine switch position,
whether the doors are locked/unloc ked, and whether the doors are opened/
closed.
Vehicles with a smart entry & start system
The lights automatically turn on/off according to engine switch mode, the
presence of the electronic key, whet her the doors are locked/unlocked, and
whether the doors are opened/closed.
■ To prevent battery from being discharged
● The following lights will go off automatically after 20 minutes:
• Interior/personal lights
• Luggage compartment light
• Footwell lights
● If the engine switch light remain on when the door is not fully closed, the
light will go off automatically after 20 minutes.
■ Customization
Settings (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features P. 524)
Personal lights
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4878-2. Steps to take in an emergency
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When trouble arises
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Touch the Toyota emblem side
of the electronic key to the
engine switch.
The engine switch will turn to IGNI-
TION 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 (Multidrive) or clutch pedal (manual
transmission) and check that (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.
■ Stopping the engine
Shift the shift lever to P (Multidrive) or N (manual transmission) 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. 402)
■ Changing engine switch modes
Release the brake pedal (Multidrive) or clutch pedal (manual transmission)
and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is
pressed. ( P. 186)
■ 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. 524)
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