2020 TOYOTA YARIS key battery

5377-3. Do-it-yourself maintenance
7
Maintenance and care
YARIS_F_OM_Europe_OM52A54E
Wireless remote control/electronic key battery
●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 screw driver 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 screw driver in the bot-
tom 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
1
2

5387-3. Do-it-yourself maintenance
YARIS_F_OM_Europe_OM52A54E
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

5397-3. Do-it-yourself maintenance
7
Maintenance and care
YARIS_F_OM_Europe_OM52A54E
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 retailer or Toyota
authorized repairer, or any reliable repairer 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

567
8When trouble arises
YARIS_F_OM_Europe_OM52A54E
8-1. Essential information
Emergency flashers ........... 568
If your vehicle has to
be stopped in
an emergency .................. 569
If the vehicle is
trapped in rising water ..... 571
8-2. Steps to take in
an emergency
If your vehicle needs to
be towed .......................... 572
If you think something is
wrong ............................... 579
Fuel pump
shut off system ............... 580
If a warning light turns on
or a warning buzzer
sounds ............................. 581
If a warning message is
displayed (vehicles with
color display) ................... 592
If you have a flat tire
(vehicles with
an emergency tire
puncture repair kit)........... 596
If you have a flat tire
(vehicles with
a spare tire) ..................... 614
If the engine will not start ... 629
If the electronic key does
not operate properly
(vehicles with a smart
entry & start system)........ 631
If the vehicle battery is
discharged ....................... 634
If your vehicle overheats .... 639
If the vehicle becomes
stuck ................................ 643

5918-2. Steps to take in an emergency
8
When trouble arises
YARIS_F_OM_Europe_OM52A54E
OnceContinuous
(5 seconds)(Flashes in yellow)
Smart entry & start system indicator
An attempt was made to exit the vehicle
with the electronic key and lock the doors
without first turning the engine switch off.
 Turn the engine switch off and lock the
doors again.
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator
Indicates that the electronic key is not pres-
ent when attempting to start the engine.
 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. 537)
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. 249)
Once(Flashes in yellow for 30 seconds.)
Smart entry & start system indicator
• 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.
 Vehicles with a Multidrive:
Touch the electronic key to the engine
switch while depressing the brake
pedal.
 Vehicles with a manual transmission:
Touch the electronic key to the engine
switch while depressing the clutch
pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions

6318-2. Steps to take in an emergency
8
When trouble arises
YARIS_F_OM_Europe_OM52A54E
If the electronic key does not operate properly
(vehicles with a smart entry & start system)
Use the mechanical key ( P. 144)
in order to perform the following
operations:
Unlocks all the doors
Locks all the doors
Vehicles with a Multidrive:
Ensure that the shift lever is in P and depress the brake pedal.
Vehicles with a manual transmission:
Ensure that the shift lever is in N and depress the clutch pedal.
If communication between the electronic key and vehicle is
interrupted ( P. 170) 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
Starting the engine
1

6338-2. Steps to take in an emergency
8
When trouble arises
YARIS_F_OM_Europe_OM52A54E
■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. 537)
■ 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. 245)
■ 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. 666)
● Check if battery-saving mode is set. If it is set, cancel the function.
( P. 170)
3

6368-2. Steps to take in an emergency
YARIS_F_OM_Europe_OM52A54E
■Starting the engine when the battery is discharged (vehicles with a Multi-
drive)
The engine cannot be started by push-starting.
■ To prevent battery discharge
● Turn off the headlights and the audio system while the engine is stopped.
(Vehicles with a Stop & Start system: except when the engine is stopped by
the Stop & Start system.)
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
■ Precautions when the battery is discharged
● Vehicles with a smart entry & start system: In some cases, it may not be
possible to unlock the doors using the smart entry & start system when the
battery is discharged. Use the wireless remote control or the mechanical
key to lock or unlock the doors.
● Vehicles with a smart entry & start system: The engine may not start on the
first attempt after the battery has recharged but will start normally after the
second attempt. This is not a malfunction.
● Vehicles with a smart entry & start system: The engine switch mode is mem-
orized by the vehicle. When the battery is reconnected, the system will
return to the mode it was in before the battery was discharged. Before dis-
connecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery dis-
charged, be especially careful when reconnecting the battery.
● Vehicles with Stop & Start system: For a while after the battery terminals
have been disconnected and reconnected, for a while after the battery has
been replaced, the Stop & Start system may not automatically stop the
engine for approximately 5 to 60 minutes.