TOYOTA COROLLA HYBRID 2021 Owners Manual (in English)

4617-3. Do-it-yourself maintenance
COROLLA HV_U
7
Maintenance and care
1 Turn 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.
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.
Checking and 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

4627-3. Do-it-yourself maintenance
COROLLA HV_U
Ty p e A
Normal fuse
Blown fuse
Ty p e B
Normal fuse
Blown fuse
Ty p e CNormal fuse
Blown fuse
Type DNormal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure
that the tab is ins talled securely.
●If the lights do not turn on even
after the fuse has been replaced,
a bulb may need replacement.
( P.463)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an ove rload 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 of
parts not designed for this vehicle
may be unusable.

4637-3. Do-it-yourself maintenance
COROLLA HV_U
7
Maintenance and care
Check the wattage of the light
bulb to be replaced. ( P.530)
■Front
Front side marker lights
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.
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

4647-3. Do-it-yourself maintenance
COROLLA HV_U
■Rear
Back-up lights
Rear turn signal lights
Rear side marker lights
■Bulbs that need to be
replaced by your Toyota
dealer
 Headlights/daytime running
lights
 Parking lights
 Front turn signal lights
 Tail lights
 Stop lights
 High mounted stoplight
 License plate lights
■LED light bulbs
The lights other than the front side
marker lights, rear turn signal lights,
rear side marker lights 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 ambien
t temperature is
low, condensation may form tempo-
rarily, but it will dissipate as the
inside of the light is warmed up. As
the condensation is due to a phe-
nomenon similar to windows fogging
in the rain, it does not indicate a
malfunction.
Contact your Toyota dealer for more
information in t he 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.462
■Front side marker lights
1 Turn the bulb base counter-
clockwise.
2 Remove the light bulb.
Replacing light bulbs

4657-3. Do-it-yourself maintenance
COROLLA HV_U
7
Maintenance and care
3 When installing, reverse the
steps listed.
■Rear turn signal lights and
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 the flathead screw-
driver with a cloth, etc.
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.
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

4667-3. Do-it-yourself maintenance
COROLLA HV_U
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 assembly with the mount-
ing when installing it.
9Install the cover.
■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.

4677-3. Do-it-yourself maintenance
COROLLA HV_U
7
Maintenance and care
WA R N I N G
●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.

4687-3. Do-it-yourself maintenance
COROLLA HV_U

469
COROLLA HV_U
8
8
When trouble arises
When trouble arises
.8-1. Essential informationEmergency flashers .... 470
If your vehicle has to be stopped in an emergency.................................. 471
If the vehicle is trapped in rising water ................ 472
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 473
If you think something is wrong ........................ 476
If a warning light turns on or a warning buzzer sounds.................................. 478
If a warning message is dis- played........................ 487
If you have a flat tire (vehi- cles without spare tire)
.................................. 490
If you have a flat tire (vehi- cles with a spare tire).................................. 501
If the hybrid system will not start ........................... 509
If you lose your keys ... 510
If the fuel filler door cannot be opened ................. 511
If the electronic key does not operate properly .. 511
If the 12-volt battery is dis- charged ..................... 513If your vehicle overheats
.................................. 517
If the vehicle becomes stuck .................................. 520

4708-1. Essential information
COROLLA HV_U
8-1.Essential information
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch
once again.
■Emergency flashers
●If the emergency flashers are
used for a long time while the
hybrid system is not operating
(while the “READY” indicator is
not illuminated), the 12-volt bat-
tery may discharge.
●If any of the SRS airbags deploy
(inflate) or in the event of a strong
rear impact, the emergency flash-
ers will turn on automatically.
The emergency flashers will turn
off automatically after operating
for approximately 20 minutes. To
manually turn t he emergency
flashers off, press the switch
twice.
(The emergency flashers may not
turn on automatically depending
on the force of the impact and conditions of t
he collision.)
Emergency flashers
The emergency flashers are
used to warn other drivers
when the vehicle has to be
stopped on the road due to
a breakdown, etc.
Operating instructions