TOYOTA COROLLA 2021 Owners Manual (in English)

4917-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_Uminal 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.
WA R N I N G
■Battery precautions
Observe the following precau-
tions. Failure to do so may result
in death or serious injury.
●Do not swallow the battery.
Doing so may cause chemical
burns.
●A coin battery o r button battery
is used in the key. If a battery is
swallowed, it may cause severe
chemical burns in as little as 2
hours and may result in death or
serious injury.
●Keep away new and removed
batteries from children.
●If the cover cannot be firmly
closed, stop using the key and
stow the key in the place where
children cannot reach, and then
contact your Toyota dealer.
●If you accidentally swallow a
battery or put a battery into a
part of your b ody, get emer-
gency medical attention imme-
diately.
■To prevent battery explosion
or leakage of flammable liq-
uid or gas
●Replace the batt ery with a new
battery of the same type. If a
wrong type of ba ttery is used, it
may explode.
●Do not expose batteries to
extremely low pr essure due to
high altitude or extremely high
temperatures.
●Do not burn, bre ak or cut a bat-
tery.
NOTICE
■When replacing the battery
Use a flathead screwdriver of
appropriate size. Applying exces-
sive 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
control.
●Do not bend either of the battery
terminals.

4927-3. Do-it-yourself maintenance
COROLLA_U
1Turn the engine 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.
NOTICE
■When removing the battery
cover (vehicles without a
smart key system)
Do not forcibly remove the battery
cover, otherwise it may be dam-
aged.
If the battery cover is difficult to
remove, lift the edge to remove it.
Checking a nd replac-
ing fuses
If any of the electrical com-
ponents do not operate, a
fuse may have blown. If this
happens, check and replace
the fuses as necessary.
Checking and replacing
fuses

4937-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
Under the driver’s side instru-
ment panel
Remove the lid.
Make sure to push the claw when
removing/installing the lid.
3Remove the fuse with the
pullout 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 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 CNormal fuse
Blown fuse

4947-3. Do-it-yourself maintenance
COROLLA_U
Ty p e D
Normal fuse
Blown fuse
Ty p e E
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 n ot turn on even
after the fuse has been replaced,
a bulb may need replacement.
(  P.495)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an overload in a cir-
cuit
The fuses are designed to blow, pro-
tecting the wiring harness from
damage.
■When replacing light bulbs
Toyota recommends that you use
genuine Toyota pr oducts designed
for this vehicle.
Because certain bulbs are con-
nected to circuits designed to pre-
vent overload, non-genuine parts or
parts not designed for this vehicle
may be unusable.
WA R N I N G
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age 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 over-
load determined and repaired by
your Toyota dealer as soon as
possible.

4957-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
Check the wattage of the light
bulb to be replaced. (P.566)
■Front
Front side marker lights
Front turn signal/parking
lights (vehicles without side
turn signal lights)
■RearBack-up lights
Rear turn signal lights
Rear side marker lights (bulb
type)
■Bulbs that need to be
replaced by your Toyota
dealer
 Headlights/daytime running
lights
 Parking lights (vehicles with
side turn signal lights)
 Front turn signal lights (vehi-
cles with side turn signal
lights)
 LED accent lights (if
equipped)
 Side turn signal lights (if
equipped)
 Tail lights
 Stop lights
 Rear side marker lights (LED
type)
 High mounted stoplight
 License plate lights
Light bulbs
You may replace the follow-
ing bulbs yourself. The diffi-
culty level of replacement
varies depending on the
bulb. If necessary bulb
replacement seems difficult
to perform, contact your
Toyota dealer.
For more information about
replacing other light bulbs,
contact your Toyota dealer.
Preparing for light bulb
replacement
Bulb locations

4967-3. Do-it-yourself maintenance
COROLLA_U
■LED light bulbs
The lights other th an the front turn
signal lights/parking lights (vehicles
without side turn sig nal lights), front
side marker lights, rear turn signal
lights, rear side marker lights (bulb
type) and back-up lights consist of a
number of LEDs. If any of the LEDs
burn out, take your vehicle to your
Toyota dealer to have the light
replaced.
■Condensation build-up on the
inside of the lens
In certain situatio ns, such as when
driving in the rain or when washing
the vehicle, condensation may form
on the inner side of the headlight
lens and other li ghts. As each light
has a ventilation hole, moist air may
enter. If the ambient temperature is
low, condensation may form tempo-
rarily, but it will di ssipate as the
inside of the light i s warmed up. As
the condensation is due to a phe-
nomenon similar to windows fogging
in the rain, it doe s not indicate a
malfunction.
Contact your Toyota dealer for more
information in the following situa-
tions:
●Large drops of water have built up
on the inside of the lens.
●Water has built up inside the
headlight.
■When replacing light bulbs
 P. 4 9 4
■Front turn signal/parking
lights (vehicles without side
turn signal lights)
1 Turn the bulb base counter-
clockwise.
Type A
Type B
2 Remove the light bulb.
Type A
Replacing light bulbs

4977-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
Ty p e B
3 When installing, reverse the
steps listed.
■Front side marker lights
1 Turn the bulb base counter-
clockwise.
2 Remove the light bulb.
3 When installing, reverse the
steps listed.
■Rear turn signal lights and
rear side marker lights
(vehicles with blub type
rear side marker lights)
1 Open the trunk lid.
2 Insert a flathead screwdriver
between the cover and the
light assembly and pry up the
cover to disengage the claws
(indicated by a dotted line).
To prevent scratching the vehicle,
wrap the tip of th e flathead screw-
driver with a cloth, etc.
3Pull the cover toward the rear
of the vehicle and remove the
cover.

4987-3. Do-it-yourself maintenance
COROLLA_U
4Remove the 2 screws and
then remove the light assem-
bly by pulling it straight back.
5 Turn the bulb base counter-
clockwise.
Rear side marker lights
Rear turn signal lights
6 Remove the light bulb.
Rear side marker lights
Rear turn signal lights
7 When installing the light bulb,
install it by conducting steps 6 and 5 with the directions
reversed.
8 Install the light assembly and
then install the 2 screws.
Align the guide and pin on
the light assembl y with the mount-
ing when installing it.
9 Install the cover.
■Rear turn signal lights
(vehicles with LED type rear
side marker lights)
1 Open the trunk lid.
2 Insert a flathead screwdriver
between the cover and the
light assembly and pry up the
cover to disengage the claws
(indicated by a dotted line).
To prevent scratching the vehicle,
wrap the tip of th e flathead screw-
driver with a cloth, etc.

4997-3. Do-it-yourself maintenance
7
Maintenance and care
COROLLA_U
3Pull the cover toward the rear
of the vehicle and remove the
cover.
4 Remove the 2 screws and
then remove the light assem-
bly by pulling it straight back.
5 Turn the bulb base counter-
clockwise. 6
Remove the light bulb.
7 When installing the light bulb,
install it by conducting steps
6 and 5 with the directions
reversed.
8 Install the light assembly and
then install the 2 screws.
Align the guide and pin on
the light assembl y with the mount-
ing when installing it.
9 Install the cover.

5007-3. Do-it-yourself maintenance
COROLLA_U
■Back-up lights
1 Open the trunk lid, remove
the clips, and pull back the
cover.
2 Turn the bulb base counter-
clockwise and remove it.
3 Remove the light bulb.
4 When installing, reverse the
steps listed.WA R N I N G
■Replacing light bulbs
●Turn off the lights. Do not
attempt to replace the bulb
immediately after turning off the
lights. The bulbs become very
hot and may cause burns.
●Do not touch the glass portion
of the light bulb with bare
hands. When it is unavoidable
to hold the glass portion, use
and hold with a clean dry cloth
to avoid getting moisture and
oils on the bulb. Also, if the bulb
is scratched or dropped, it may
blow out or crack.
●Fully install light bulbs and any
parts used to secure them. Fail-
ure to do so may result in heat
damage, fire, or water entering
the light unit. This may damage
the lights or cause condensa-
tion to build up on the lens.
■To prevent damage or fire
Make sure bulbs are fully seated
and locked.