2021 TOYOTA YARIS CROSS Owners Manual

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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.

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6-3. Do-it-yourself maintenance
1Turn the power switch off.
2 Open the fuse box cover.
Engine compartment: type A
fuse box
Push the tabs in and lift the lid off.
Engine compartment: type B
fuse box
Push the tabs in and lift the lid off.
WARNING
■Removed battery and other parts
These parts are small and if swal-
lowed by a child, they can cause choking. Keep away from children. Failure to do so could result in death
or serious injury.
■Lithium battery precautions
CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUC-
TIONS
NOTICE
■When replacing the battery
Use a flathead screwdriver of appro- priate size. Applying excessive force may deform or damage the cover.
■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 con- trol.
●Do not bend either of the battery terminals.
■When removing the battery cover (vehicles without a smart entry & start system)
Do not forcibly remove the battery cover, otherwise it may be damaged. If the battery cover is difficult to
remove, lift the edge to remove it.
Checking and replacing
fuses
If any of the electrical compo-
nents do not operate, a fuse
may have blown. If this hap-
pens, check and replace the
fuses as necessary.
Checking and replacing
fuses

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6-3. Do-it-yourself maintenance
Maintenance and care
Under the driver’s side instru-
ment panel (left-hand drive vehi-
cles)
Remove the lid.
Make sure to push the claw when
removing/installing the lid.
Under the passenger’s side
instrument panel (right-hand
drive vehicles)
• Vehicles without a footwell lights
Remove the cover and then remove the
lid.
Make sure to push the claw when
removing/installing the lid.
• Vehicles with a footwell lights
Remove the cover.
Rotate the cover 90 degrees clockwise.

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6-3. Do-it-yourself maintenance
Remove the footwell lights connector
and clamp .
Remove the lid.
Make sure to push the claw when
removing/installing the lid.
Under the right-hand rear seat
Remove the 12-volt battery cover.
( P.394)
3Remove the fuse with the pull-
out tool.
Only type A fuse can be
removed using the pullout tool.
4 Check if the fuse is blown.
Replace the blown fuse with a new fuse

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6-3. Do-it-yourself maintenance
Maintenance and care
of an appropriate amperage rating. The
amperage rating can be found on the fuse box lid.
Type A
Normal fuse
Blown fuse
Type B
Normal fuse
Blown fuse
Type C
Normal fuse
Blown fuse
Typ e D
Normal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure that the tab is installed securely.
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. ( P.423)
●If the replaced fuse blows again, have
the vehicle inspected by any autho- rized Toyota retailer or Toyota autho-rized repairer, or any reliable repairer.
■If there is an overload in a circuit
The fuses are designed to blow, protect- ing the wiring harness from damage.
■When replacing light bulbs
Toyota recommends that you use genu-
ine Toyota products designed for this vehicle.Because certain bulbs are connected to
circuits designed to prevent overload, non-genuine parts of parts not designed for this vehicle may be unusable.

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6-3. Do-it-yourself maintenance
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
●Never use a fuse of a higher
amperage rating than that indi- cated, or use any other object in place of a fuse.
●Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
●Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.
■When installing the fuse box cover (Engine compartment: type A and type B fuse boxes)
Press the fuse box cover, when installing, after aligning all of the claw positions. Otherwise, the claws may
be damaged.