Toyota Corolla (2020 year). Owner's manual - part 29

454

7-3. Do-it-yourself maintenance

■

Instructions for checking tire 

inflation pressure

When checking tire inflation pres-

sure, observe the following:

●

Check only when the tires are 

cold.

If your vehicle has been parked for 

at least 3 hours or has not been 

driven for more than 1 mile or 1.5 

km, you will get an accurate cold 

tire inflation pressure reading.

●

Always use a tire pressure gauge.

It is difficult to judge if a tire is 

properly inflated based only on its 

appearance.

●

It is normal for the tire inflation 

pressure to be higher after driving 

as heat is generated in the tire. Do 

not reduce tire inflation pressure 

after driving.

●

Never exceed the vehicle capacity 

weight.

Passengers and luggage weight 

should be placed so that the vehi-

cle is balanced.

WARNING

■

Proper inflation is critical to 

save tire performance

Keep your tires properly inflated.

If the tires are not properly 

inflated, the following conditions 

may occur which could lead to an 

accident resulting in death or seri-

ous injury:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting 

from overheated tires

●

Air leaking from between tire 

and wheel

●

Wheel deformation and/or tire 

damage

●

Greater possibility of tire dam-

age while driving (due to road 

hazards, expansion joints, 

sharp edges in the road, etc.)

NOTICE

■

When inspecting and adjust-

ing tire inflation pressure

Be sure to put the tire valve caps 

back on.

If a valve cap is not installed, dirt 

or moisture may get into the valve 

and cause an air leak, resulting in 

decreased tire inflation pressure.

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When replacing wheels, care 
should be taken to ensure that 
they are equivalent to those 
removed in load capacity, diam-
eter, rim width and inset

*

.

Replacement wheels are avail-
able at your Toyota dealer.

*

: Conventionally referred to as off-

set.

Toyota does not recommend 
using the following:


Wheels of different sizes or 
types



Used wheels



Bent wheels that have been 
straightened

■

When replacing wheels (vehi-

cles with a tire pressure warn-

ing system)

The wheels of your vehicle are 

equipped with tire pressure warning 

valves and transmitters that allow 

the tire pressure warning system to 

provide advance warning in the 

event of a loss in tire inflation pres-

sure. Whenever wheels are 

replaced, the tire pressure warning 

valves and transmitters must be 

installed. (P.449)

Wheels

If a wheel is bent, cracked or 
heavily corroded, it should 
be replaced. Otherwise, the 
tire may separate from the 
wheel or cause a loss of 
handling control.

Wheel selection

WARNING

■

When replacing wheels

●

Do not use wheels that are a dif-

ferent size from those recom-

mended in the Owner’s Manual, 

as this may result in a loss of 

handling control.

●

Never use an inner tube in a 

leaking wheel which is designed 

for a tubeless tire.

Doing so may result in an acci-

dent, causing death or serious 

injury.

■

When installing the wheel 

nuts

●

Be sure to install the wheel nuts 

with the tapered ends facing 

inward. Installing the nuts with 

the tapered ends facing outward 

can cause the wheel to break 

and eventually cause the wheel 

to come off while driving, which 

could lead to an accident result-

ing in death or serious injury.

Tapered portion

●

Never use oil or grease on the 

wheel bolts or wheel nuts.

Oil and grease may cause the 

wheel nuts to be excessively 

tightened, leading to bolt or disc 

wheel damage. In addition, the 

oil or grease can cause the 

wheel nuts to loosen and the 

wheel may fall off, causing an 

accident and resulting in death 

or serious injury. Remove any 

oil or grease from the wheel 

bolts or wheel nuts.

456

7-3. Do-it-yourself maintenance



Use only Toyota wheel nuts 
and wheel nut wrenches 
designed for use with your 
aluminum wheels.



When rotating, repairing or 
changing your tires, check 
that the wheel nuts are still 
tight after driving 1000 miles 
(1600 km).



Be careful not to damage the 

aluminum wheels when using 
tire chains.



Use only Toyota genuine bal-
ance weights or equivalent 
and a plastic or rubber ham-
mer when balancing your 
wheels.

WARNING

■

Use of defective wheels pro-

hibited

Do not use cracked or deformed 

wheels. Doing so could cause the 

tire to leak air during driving, pos-

sibly causing an accident.

NOTICE

■

Replacing tire pressure warn-

ing valves and transmitters 

(vehicles with a tire pressure 

warning system)

●

Because tire repair or replace-

ment may affect the tire pres-

sure warning valves and 

transmitters, make sure to have 

tires serviced by your Toyota 

dealer or other qualified service 

shop. In addition, make sure to 

purchase your tire pressure 

warning valves and transmit-

ters at your Toyota dealer.

●

Ensure that only genuine Toyota 

wheels are used on your vehi-

cle.

Tire pressure warning valves 

and transmitters may not work 

properly with non-genuine 

wheels.

Aluminum wheel precau-
tions (if equipped)

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1

Turn the engine switch off.

2

Open the glove box. Slide off 
the damper (if equipped).

3

Push in the glove box on the 
vehicle’s outer side to discon-
nect the claws. Then pull out 
the glove box and disconnect 
the lower claws.

4

Unlock the filter cover ( ), 
pull the filter cover out of the 

claws ( ), and remove the 
filter cover.

5

Remove the filter case.

6

Remove the air conditioning 
filter from the filter case and 
replace it with a new one.

The “

UP” marks shown on the 

filter and the filter case should be 

pointing up.

■

Checking interval

Replace the air conditioning filter 

according to the maintenance 

schedule. In dusty areas or areas 

with heavy traffic flow, early replace-

Air conditioning filter

The air conditioning filter 
must be changed regularly 
to maintain air conditioning 
efficiency.

Removing the air condi-
tioning filter

458

7-3. Do-it-yourself maintenance

ment may be required. (For sched-

uled maintenance information, 

please refer to the “Scheduled 

Maintenance Guide” or “Owner’s 

Manual Supplement”.)

■

If air flow from the vents 

decreases dramatically

The filter may be clogged. Check 

the filter and replace if necessary.

*

: If equipped

■

If the key battery is depleted 

The following symptoms may occur:

●

The smart key 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

■

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.

NOTICE

■

When using the air condition-

ing system

Make sure that a filter is always 

installed.

Using the air conditioning system 

without a filter may cause damage 

to the system.

■

To prevent damage to the fil-

ter cover

When moving the filter cover in 

the direction of arrow to release 

the fitting, pay attention not to 

apply excessive force to the 

claws. Otherwise, the claws may 

be damaged.

Wireless remote con-

trol/electronic key bat-

tery

*

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

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7-3. Do-it-yourself maintenance

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

Vehicles without a smart key 
system

1

Remove the key cover.

To prevent damage to the key, 

cover the tip of the flathead screw-

driver with a rag.

2

Remove the battery cover.

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.

Insert a new battery with the “+” ter-

minal 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 

between it and the key.

6

Operate the 

 or 

 switch 

and check that the doors can 
be locked/unlocked.

Replacing the battery

460

7-3. Do-it-yourself maintenance



Vehicles with a smart key sys-
tem

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.

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 

visible. In this case, remove the 

electronic key module in order to 

remove the battery.
Insert a new battery with the “+” ter-

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

■

Removed battery and other 

parts

These parts are small and if swal-

lowed by a child, they can cause 

choking. Keep away from chil-

dren. Failure to do so could result 

in death or serious injury.

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.

461

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1

Turn 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

●

Do not touch or move any other 

component inside the remote 

control.

●

Do not bend either of the battery 

terminals.

■

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 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

462

7-3. Do-it-yourself maintenance



Under the driver’s side instru-
ment panel

Remove the lid.
Make sure to push the claw when 
removing/installing the lid.

3

Remove 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 C

Normal fuse
Blown fuse

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

Type D

Normal fuse
Blown fuse



Type 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 not turn on even 

after the fuse has been replaced, 

a bulb may need replacement. 

(P.464)

●

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 products 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.

WARNING

■

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.

464

7-3. Do-it-yourself maintenance

Check the wattage of the light 
bulb to be replaced. (P.533)

■

Front

Front side marker lights
Front turn signal/parking 
lights (vehicles without side 
turn signal lights)

■

Rear

Back-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

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■

LED light bulbs

The lights other than the front turn 

signal lights/parking lights (vehicles 

without side turn signal 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 situations, 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 lights. 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 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 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.463

■

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

466

7-3. Do-it-yourself maintenance



Type 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 the flathead screw-

driver with a cloth, etc.

3

Pull the cover toward the rear 
of the vehicle and remove the 
cover.

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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 

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.

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 the flathead screw-

driver with a cloth, etc.

468

7-3. Do-it-yourself maintenance

3

Pull 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 assembly with the mount-

ing when installing it.

9

Install the cover.

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■

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.

WARNING

■

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.