key TOYOTA COROLLA HATCHBACK 2021 (in English) Service Manual

4126-4. Other interior features
COROLLA H/B_U
■If a cover or accessory is
attached to the portable device
Do not charge a portable device if a
cover or accessory which is not Qi
compatible is attached. Depending
on the type of cover and/or acces-
sory attached, it may not be possi-
ble to charge the portable device. If
the portable device is placed on the
charging area and does not charge,
remove the cover and/or accesso-
ries.
■If interference is heard in AM
radio broadcasts while
charging
Turn off the wireless charger and
check if the noise is reduced. If
noise is reduced, press and hold the
power supply switch of the wireless
charger for 2 seconds. The fre-
quency of the wireless charger is
changed and noise may be
reduced. When the frequency is
changed, the operation indicator
light will blink (orange) 2 times.
■Charging precautions
●If the electronic key cannot be
detected in the cabin, charging
cannot be performed. When a
door is opened and closed,
charging may be temporarily sus-
pended.
●While charging, the wireless char-
ger and the portable device will
become warm.
This is not a malfunction.If a porta-
ble device becomes warm while
charging and charging stops due
to the protection function of the
portable device, wait until the por-
table device cools down and
charge it again.
■Sound generated during opera-
tion
When the power supply switch is
turned on or while a portable device
is being identified, operation sounds
may be heard. This is not a malfunc-
tion.
■Cleaning the wireless charger
 P.423
■Certification for the wireless charger

4166-4. Other interior features
COROLLA H/B_U
1To set the visor in the forward
position, flip it down.
2 To set the visor in the side
position, flip down, unhook,
and swing it to the side.
3 To use the side extender,
place the visor in the side
position, then slide it back-
ward.
Slide the cover to open.
The vanity light turns on.
■To prevent battery discharge
If the vanity lights remain on when
the engine switch is OFF, the lights
will go off automatically after 20 min-
utes.
NOTICE
●When wireless keys (that emit
radio waves) other than those of
your vehicle are being used
nearby.
If in situations other than above
the wireless charger does not
operate properly or the operation
indicator light is blinking, the wire-
less charger may be malfunction-
ing. Contact your Toyota dealer.
■To prevent failure or damage
to data
●Do not bring magnetic cards,
such as a credit card, or mag-
netic recording media, close to
the wireless charger while
charging. Otherwise, data may
be erased due to the influence
of magnetism.
Additionally, do not bring preci-
sion instruments such as wrist
watches, close to the wireless
charger, as such objects may
malfunction.
●Do not leave portable devices in
the cabin. The temperature
inside the cabin may become
high when parked in the sun,
and cause damage to the
device.
■To prevent battery discharge
Do not use the wireless charger
for a long period of time with the
engine stopped.
Sun visors
Vanity mirrors

419
COROLLA H/B_U
7
7
Maintenance and care
Maintenance and care
.7-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 420
Cleaning and protecting the vehicle interior ........... 422
7-2. Maintenance Maintenance requirements.................................. 425
General maintenance.. 426
Emission inspection and maintenance (I/M) pro-
grams ........................ 429
7-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 431
Hood ........................... 433
Positioning a floor jack .................................. 434
Engine compartment ... 435
Tires ............................ 442
Tire inflation pressure.. 451
Wheels ......... ...............453
Air conditioning filter .... 454
Electronic key battery.. 456
Checking and replacing fuses.......................... 458
Light bulbs................... 460

4207-1. Maintenance and care
COROLLA H/B_U
7-1.Maintenance and care
Working from top to bottom,
liberally 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
thoroughly with water.
 Wipe away any water.
 Wax the vehicle when the
waterproof coating deterio-
rates.
If water does not bead on a clean
surface, apply wax when the vehi-
cle body is cool.
■Automatic car washes
●Fold the mirrors before washing
the vehicle. Start washing from the
front of the vehicle. Make sure to
extend the mirrors before driving.
●Brushes used in automatic car
washes may scratch the vehicle
surface, parts (wheel, etc.) and
harm your vehicle’s paint.
●In certain automatic car washes,
the rear spoiler may interfere with machine operation. This may pre-
vent the vehicle from being
cleaned properly or result in dam-
age 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 continuously.
■When using a car wash
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 following correction pro-
cedures to wash the vehicle:
●Place the key in a position 6 ft. (2
m) 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 bat-
tery-saving mode to disable the
smart key system. ( P.109)
■Wheels and wheel ornaments
●Remove any dirt immediately by
using a neutral detergent.
●Wash detergent off with water
immediately after use.
●To protect the paint from damage,
make sure to observe the follow-
ing 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 driving or parking in hot
weather
■Bumpers
Do not scrub with abrasive cleaners.
■Plated portions
If dirt cannot be removed, clean the
parts as follows:
●Use a soft cloth dampened with an
approximately 5% solution of neu-
Cleaning and protect-
ing the vehicle exte-
rior
Perform cleaning in a man-
ner appropriate to each
component and its material.
Cleaning instructions

4407-3. Do-it-yourself maintenance
COROLLA H/B_U
Terminals
Hold-down clamp
■Before recharging
When recharging, the battery pro-
duces hydrogen gas which is flam-
mable and explosive. Therefore,
observe the following precautions
before recharging:
●If recharging with the battery
installed on the vehicle, be sure to
disconnect the ground cable.
●Make sure the charger is off when
connecting and disconnecting the
charger cables to the battery.
■After recharging/reconnecting
the battery
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the battery. If this happens,
use the wireless remote control or
the mechanical key to lock/unlock
the doors.
●Start the engine with the engine
switch in ACC. The engine may
not start with the engine switch
turned off. However, the engine
will operate normally from the sec-
ond attempt.
●The engine switch mode is
recorded by the vehicle. If the bat-
tery is reconnected, the vehicle
will return the engi ne switch mode
to the status it was in before the
battery was disconnected. Make
sure to turn off the engine before
disconnecting the battery. Take extra care when connecting the
battery if the engine switch mode
prior to discharge is unknown.
If the system will no t start even after
multiple attempts, contact your Toy-
ota dealer.
WARNING
■Chemicals in the battery
The battery contains poisonous
and corrosive sulfuric acid and
may produce hydrogen gas which
is flammable and explosive. To
reduce the risk of death or serious
injury, take the following precau-
tions while working on or near the
battery:
●Do not cause sparks by touch-
ing the battery terminals with
tools.
●Do not smoke or light a match
near the battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the battery.
●Keep children away from the
battery.
■Where to safely charge the
battery
Always charge the battery in an
open area. Do not charge the bat-
tery in a garage or closed room
where there is insufficient ventila-
tion.

4567-3. Do-it-yourself maintenance
COROLLA H/B_U
■If the electronic key battery is
depleted
The following symptoms may occur:
●The smart key system and wire-
less remote control will not func-
tion properly.
●The operational range will be
reduced.
 Flathead screwdriver
 Lithium battery CR2032
■Use a CR2032 lithium battery
●Batteries can be purchased at
your Toyota dealer, local electrical
appliance shops or camera stores.
●Replace only with the same or
equivalent type recommended by
the manufacturer.
●Dispose of used batteries accord-
ing to local laws.
1 Release the lock and remove
the mechanical key.
2 Remove the key cover.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
3Remove 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
visible. In this case, remove the
electronic key module in order to
remove the battery.
Insert a new battery with the “+” ter-
Electronic key batter 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
recommended that key bat-
tery replacement be per-
formed by your Toyota
dealer.
Items to prepare
Replacing the battery

4577-3. Do-it-yourself maintenance
COROLLA H/B_U
7
Maintenance and care
minal 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.
WARNING
■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 or button battery
is used in the electronic 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 electronic
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 body, get emer-
gency medical attention imme-
diately.
■To prevent battery explosion
or leakage of flammable liq-
uid or gas
●Replace the battery with a new
battery of the same type. If a
wrong type of battery is used, it
may explode.
●Do not expose batteries to
extremely low pressure due to
high altitude or extremely high
temperatures.
●Do not burn, break 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.

463
COROLLA H/B_U
8
8
When trouble arises
When trouble arises
.8-1. Essential informationEmergency flashers .... 464
If your vehicle has to be stopped in an emergency.................................. 464
If the vehicle is trapped in rising water ................ 465
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 467
If you think something is wrong ........................ 470
Fuel pump shut off system .................................. 471
If a warning light turns on or a warning buzzer sounds.................................. 472
If a warning message is dis- played........................ 482
If you have a flat tire (vehi- cles without spare tire).................................. 484
If you have a flat tire (vehi- cles with a spare tire)
.................................. 494
If the engine will not start .................................. 502
If you lose your keys ... 504
If the electronic key does not operate properly .. 504
If the vehicle battery is dis- charged ..................... 506If your vehicle overheats
.................................. 510
If the vehicle becomes stuck .................................. 512

4838-2. Steps to take in an emergency
COROLLA H/B_U
8
When trouble arises
●Automatic High Beam
●RSA (Road Sign Assist) (if
equipped)
●Dynamic radar cruise control with
full-speed range (if equipped)
●Dynamic radar cruise control (if
equipped)
■If “Radar Cruise Control
Unavailable” is displayed
The dynamic radar cruise control
with full-speed range system or
dynamic radar cruise control system
cannot be used temporarily. Use the
system when it becomes available
again.
■If “Maintenance Required
Soon” is displayed
Indicates that all maintenance
according to the driven distance on
the maintenance schedule
* should
be performed soon.
Comes on approximately 4500
miles (7200 km) after the message
has been reset. If necessary, per-
form maintenance. Please reset the
message after the maintenance is
performed. ( P.426)
*: Refer to the separate “Scheduled
Maintenance” or “Owner’s Man-
ual Supplement” for the mainte-
nance interval applicable to your
vehicle.
■If “Maintenance Required Visit
Your Dealer” is displayed
Indicates that all maintenance is
required to correspond to the driven
distance on the maintenance sched-
ule
*.
Comes on approximately 5000
miles (8000 km) after the message
has been reset. (The indicator will
not work properly unless the mes-
sage has been reset.) Perform the
necessary maintenance. Please
reset the message after the mainte-
nance is performed. ( P.426)
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Man-
ual Supplement” for the mainte-
nance interval applicable to your
vehicle.
■If a message that indicates the
need for visiting your Toyota
dealer is displayed
The system or part shown on the
multi-information di splay is malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer immediately.
■If a message that indicates the
need for referring to Owner’s
Manual is displayed
●If “Engine Coolant Temp High” is
displayed, follow the instructions
accordingly. ( P.510)
●If any of the following messages
are displayed on the multi-infor-
mation display, it may indicate a
malfunction. Have the vehicle
inspected by your Toyota dealer
immediately.
• “Smart Key System Malfunction”
●If any of the following messages
are displayed on the multi-infor-
mation display, it may indicate a
malfunction. Immediately stop the
vehicle and contact your Toyota
dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
NOTICE
■If “High Power Consumption
Partial Limit on AC/Heater
Operation” is displayed fre-
quently
There is a possible malfunction
relating to the charging system or
the battery may be deteriorating.
Have the vehicle inspected by
your Toyota dealer.

5038-2. Steps to take in an emergency
COROLLA H/B_U
8
When trouble arises
 The battery terminal connec-
tions may be loose or cor-
roded. ( P.439)
The engine starting system may
be malfunctioning due to an
electrical problem such as elec-
tronic key battery depletion or a
blown fuse. However, an interim
measure is available to start the
engine. ( P.503)
One of the following may be the
cause of the problem:
 The battery may be dis-
charged. ( P.506)
 One or both of the battery ter-
minals may be disconnected.
( P.439)
 There may be a malfunction
in the steering lock system.
Contact your Toyota dealer if the
problem cannot be repaired, or if
repair procedures are unknown.
When the engine does not start,
the following steps can be used
as an interim measure to start the engine if the engine switch is
functioning normally.
Do not use this starting proce-
dure except in case of emer-
gency.
1
Pull the parking brake switch
to check that the parking
brake is set. ( P.154)
Parking brake indicator will come
on.
2 Check that the shift lever is
set in P (continuously vari-
able transmission) or N
(manual transmission).
3 Turn the engine switch to
ACC.
4 Press and hold the engine
switch for about 15 seconds
while depressing the brake
pedal (continuously variable
transmission) or clutch pedal
(manual transmission) firmly.
Even if the engine can be started
using the above steps, the system
may be malfunctioning. Have the
vehicle inspected by your Toyota
dealer.
The starter motor does
not turn over
The starter motor does
not turn over, the interior
lights and headlights do
not turn on, or the horn
does not sound.
Emergency start function