2022 TOYOTA YARIS key battery

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6-1. Maintenance and care
6-1.Mainte nance a nd care
Working from top to bottom, lib-
erally apply water to the vehicle
body, wheel wells and underside
of the vehicle to remove any dirt
and dust.
 Wash the vehicle body using a
sponge or soft cloth, such as a
chamois.
 For hard-to-remove marks, use
car wash soap and rinse thor-
oughly with water.
 Wipe away any water.
 Wax the vehicle when the water-
proof coating deteriorates.
If water does not bead on a clean sur-
face, apply wax when the vehicle body
is cool.
■Automatic car washes
●Before washing the vehicle: • Fold the mirrors.
Start washing from the front of the vehi-
cle. Extend the mirrors before driving.
●Brushes used in automatic car washes may scratch the vehicle sur-
face, parts (wheel, etc.) and harm your vehicle’s paint.
●In certain automatic car washes, the rear spoiler (if equipped) may interfere with machine operation. This may pre-
vent the vehicle from being cleaned
properly or result in damage to the
rear spoiler.
■High pressure car washes
As water may enter the cabin, do not bring the nozzle tip near the gaps
around the doors or perimeter of the windows, or spray these areas continu-ously.
■When using a car wash (vehicles
with a smart entry & start system)
If the door handle becomes wet while the electronic key is within the effective
range, the door may lock and unlock repeatedly. In that case, follow the fol-lowing correction procedures to wash
the vehicle:
●Place the key in a position 2 m (6 ft.)
or more separate from the vehicle while the vehicle is being washed. (Take care to ensure that the key is
not stolen.)
●Set the electronic key to battery-sav-
ing mode to disable the smart entry & start system. ( P.141)
■Wheels and wheel ornaments (if equipped)
●Remove any dirt immediately by using a neutral detergent.
●Wash detergent off with water immedi-ately after use.
●To protect the paint from damage, make sure to observe the following
precautions. • Do not use acidic, alkaline or abrasive detergent
• Do not use hard brushes • Do not use detergent on the wheels when they are hot, such as after driv-
ing or parking in hot weather
■Bumpers
Do not scrub with abrasive cleaners.
■Plated portions (if equipped)
If dirt cannot be removed, clean the
parts as follows:
●Use a soft cloth dampened with an
approximately 5% solution of neutral detergent and water to clean the dirt
Cleaning and protecting
the vehicle exterior
Perform cleaning in a manner
appropriate to each compo-
nent and its material.
Cleaning instructions

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6-3. Do-it-yourself maintenance
The 12-volt battery is located in the
right-hand side of the rear seats.
1 Remove the screws.
2 Remove the clips from the
claws.
3 Slide the tabs out of the
notches.
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-mable and explosive. Therefore,
observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to dis-connect the ground cable.
●Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery (vehicles with a
smart entry & start system)
●Unlocking the doors using the smart
entry & start system may not be possi- ble immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the power switch in ACC. The hybrid system
may not start with the power switch turned off. However, the hybrid sys-tem will operate normally from the
second attempt.
●The power switch mode is recorded
by the vehicle. If the 12-volt battery is reconnected, the vehicle will return the power switch mode to the status it
was in before the 12-volt battery was disconnected. Make sure to turn off the power before disconnecting the
12-volt battery. Take extra care when connecting the 12-volt battery if the power switch mode prior to discharge
is unknown.
If the system will not start even after multiple attempts, contact any autho-
rized Toyota retailer or Toyota autho- rized repairer, or any reliable repairer.
12-volt batter y
Location
Removing the 12-volt bat-
tery cover

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6-3. Do-it-yourself maintenance
Maintenance and care
■If the electronic 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.
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2032 (vehi-
cles without a smart entry & start
system), or CR2450 (vehicles
with a smart entry & start sys-
tem)
■Use a CR2032 (vehicles without a
smart entry & start system) or CR2450 (vehicles with a smart entry & start system) lithium bat-
tery
●Batteries can be purchased at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
NOTICE
●Do not install anything to the air intake vent other than the exclusive
filter for this vehicle or use the vehi- cle without the filter installed.
■If “Maintenance Required for Traction Battery Cooling Parts See Owner’s Manual” is dis-
played on the multi-information display
If the vehicle is continuously driven
with the warning message (indicating that charging/discharging of the hybrid battery [traction battery] may
become limited) displayed, the hybrid battery (traction battery) may mal-function. If the warning message is
displayed, clean the air intake vent immediately.
Wireless remote con-
trol/electronic key bat-
ter y
Replace the battery with a new
one if it is depleted.
As the key may be damaged if
the following procedure is not
performed properly, it is rec-
ommended that key battery
replacement be performed by
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
Items to prepare

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6-3. Do-it-yourself maintenance
repairer, local electrical appliance
shops or camera stores.
●Replace only with the same or equiva-
lent type recommended by the manu- facturer.
●Dispose of used batteries according to local laws.
Vehicles without a smart entry &
start system
1 Remove the key cover.
To prevent damage to the key, cover the tip of the flathead screwdriver with a
rag.
2 Remove the battery cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the
cover damaged.
If the battery cover is difficult to remove, lift the edge to remove it.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the battery, use a screwdriver of an appropriate size.
Insert a new battery with the “+” termi-
nal facing up.
4 Install the battery cover with the
tab facing up.
Push the entire edge of the battery
cover into the key.
5 Install the key cover.
Align the key cover with the key and then press it straight into the key.
Make sure that the key cover is securely installed without any gaps
Replacing the battery

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6-3. Do-it-yourself maintenance
Maintenance and care
between it and the key.
6Operate the or switch
and check that the doors can be
locked/unlocked.
Vehicles with a smart entry &
start system
1 Release the lock and remove
the mechanical key.
2 Remove the key cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the cover damaged.
To prevent damage to the key, cover the tip of the flathead screwdriver with a
rag.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the elec-
tronic key module may stick to the cover and the battery may not be visi-ble. In this case, remove the electronic
key module in order to remove the bat- tery.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” termi- nal facing up.
4 When installing the key cover
and mechanical key, install by
conducting step 2 and step 1
with the directions reversed.
5 Operate the or switch
and check that the doors can be
locked/unlocked.

7
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7
When trouble arises
When trouble arises
7-1. Essential information
Emergency flashers .......... 366
If your vehicle has to be
stopped in an emergency 366
If the vehicle is submerged or
water on the road is rising
....................................... 367
7-2. Steps to take in an emer-
gency
If your vehicle needs to be
towed .............................. 369
If you think something is wrong
....................................... 372
If a warning light turns on or a
warning buzzer sounds... 374
If a warning message is dis-
played ............................. 383
If you have a flat tire (vehicles
with an emergency tire punc-
ture repair kit) ................. 386
If you have a flat tire (vehicles
with a spare tire) ............. 397
If the hybrid system will not
start ................................ 405
If you lose your keys ......... 407
If the electronic key does not
operate properly (vehicles
with a smart entry & start sys-
tem) ................................ 407
If the 12-volt battery is dis-
charged .......................... 409
If your vehicle overheats... 414
If the vehicle becomes stuck
....................................... 417

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7-2. Steps to take in an emergency
When trouble arises
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.407)
 There may not be sufficient fuel
in the vehicle’s tank. Refuel the
vehicle.
 There may be a malfunction in
the immobilizer system. ( P.84)
 There may be a malfunction in
the steering lock system.
 Vehicles with a smart entry &
start system: The hybrid system
may be malfunctioning due to an
electrical problem such as elec-
tronic key battery depletion or a
blown fuse. However, depend-
ing on the type of malfunction, an
interim measure is available to
start the hybrid system.
NOTICE
■Driving with tire chains and the compact spare tire (if equipped)
Do not fit tire chains to the compact spare tire. Tire chains may damage the vehicle body and adversely affect
driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and transmitter, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer as the tire pressure warning
valve and transmitter may be dam- aged if not handled correctly.
■To avoid damage to the tire pres-sure warning valves and trans-mitters (except for compact
spare)
When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is used, contact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer as soon as possible. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( P.336)
If the hybrid system will
not start
Reasons for the hybrid system
not starting vary depending on
the situation. Check the follow-
ing and perform the appropri-
ate procedure:
The hybrid system will not
start even though the cor-
rect starting procedure is
being followed. ( P.173,
175)

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7-2. Steps to take in an emergency
When trouble arises
■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.431)
●Check if battery-saving mode is set. If it is set, cancel the function. ( P.141)
If you lose your keys
New genuine keys can be
made by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable
repairer using the other key
(vehicles without a smart entry
& start system) or mechanical
key (vehicles with a smart
entry & start system) 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.
NOTICE
■When an electronic key is lost (vehicles with a smart entry &
start system)
If the electronic key remains lost, the risk of vehicle theft increases signifi-
cantly. Visit any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer immediately
with all remaining electronic keys that were provided with your vehicle.
If the electronic key
does not operate prop-
erly (vehicles with a
smar t entr y & start sys-
tem)
If communication between the
electronic key and vehicle is
interrupted ( P.142) 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 sys-
tem can be started by following
the procedure below.
NOTICE
■In case of a smart entry & start system malfunction or other key-related problems
Take your vehicle with all the elec- tronic keys provided with your vehicle to any authorized Toyota retailer or
Toyota authorized repairer, or any reli- able repairer.