Toyota Highlander Hybrid (2023 year). Manual in english - page 26

416

6-3. Do-it-yourself maintenance

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

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, tire pressure warning 

valves and transmitters must be 

installed. (



P.409)

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

Never use oil or grease on the 

wheel bolts or wheel nuts.

Oil and grease may cause the 

wheel nuts to be excessively tight-

ened, 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.

■

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

●

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.

418

6-3. Do-it-yourself maintenance



Use only Toyota wheel nuts 
and 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.

1

Turn the power switch off.

2

Open the glove box. Slide off 
the damper.

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 

NOTICE

●

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

Air conditioning filter

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

Removing the air condi-
tioning filter

419

6-3. Do-it-yourself maintenance

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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

Inspect and replace the air condi-

tioning filter according to the mainte-

nance schedule. In dusty areas or 

areas with heavy traffic flow, early 

replacement may be required. (For 

scheduled maintenance information, 

please refer to the “Owner’s Manual 

Supplement” or “Scheduled Mainte-

nance Guide”.)

■

If air flow from the vents 

decreases dramatically

The filter may be clogged. Check 

the filter and replace if necessary.

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.

420

6-3. Do-it-yourself maintenance

■

Scheduled maintenance of the 

air intake vent is necessary 

when

In some situations such as when the 

vehicle is used frequently or in 

heavy traffic or dusty areas, the air 

intake vent may need to be cleaned 

more regularly. 

For details, refer to “Scheduled 

Maintenance Guide”.

■

Cleaning the air intake vent

Improper handling of the air intake 

vent cover and filter may result in 

damage to them. If you have any 

concerns about cleaning the filter, 

contact your Toyota dealer.

1

Turn the power switch off.

2

Remove the air intake vent 
cover.

Pull the cover as shown in the illus-

tration to disengage the 6 claws, 

starting from the claw in the upper 

right corner and pull the cover 

toward the front of the vehicle to 

remove it.

Cleaning the hybrid 

battery (traction bat-

tery) air intake vents

To prevent the fuel economy 
from being affected, visually 
inspect the hybrid battery 
(traction battery) air intake 
vents periodically for clogs. 
If it is dusty or clogged or if 
“Maintenance Required for 
Traction Battery Cooling 
Parts See Owner’s Manual” 
is shown on the multi-infor-
mation display, clean the air 
intake vent using the follow-
ing procedures:

NOTICE

■

If “Maintenance Required for 

Traction Battery Cooling 

Parts See Owner’s Manual” is 

displayed on the multi-infor-

mation display

Clean the air intake vent immedi-

ately. 

If the vehicle is continuously 

driven with the warning message 

displayed, it may cause a mal-

function or output restriction of the 

hybrid battery (traction battery).

Cleaning procedure

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6-3. Do-it-yourself maintenance

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3

Remove the air intake vent 
filter.

Disengage the claw to remove the 

filter from the rear scuff plate.

4

Remove the dust and sand 
from the filter.

Using a vacuum cleaner, etc., 

absorb dust and sand from the filter 

by profiling the nozzle lightly along 

the fold.

5

Hold the filter to the light and 
check if it is not clogged.

If the dust or sand cannot be 

removed completely, contact your 

Toyota dealer.

6

Reinstall the filter to the 
cover.

Engage the 3 claw to install the fil-

ter.
Make sure that the filter is not 

crooked or deformed when install-

ing it.

7

Install the air intake vent 
cover.

Insert the tab of the cover as shown 

in the illustration and push the 

cover to engage the 6 claws.



If “Maintenance Required for 
Traction Battery Cooling Parts 
See Owner’s Manual” is dis-
played on the multi-informa-
tion display

8

Start the hybrid system and 
check that the warning mes-
sage is no longer displayed.

It may be necessary to drive the 

vehicle for approximately 20 min-

utes before the warning message is 

displayed again then disappears.

422

6-3. Do-it-yourself maintenance

If the warning message does not 

disappear after some time, have 

the vehicle inspected by your Toy-

ota dealer.

■

If the dust or sand on the filter 

cannot be removed

It is recommended to use a vacuum 

cleaner with plastic brushes.

WARNING

■

When cleaning the air intake 

vent

●

Do not use water or other liq-

uids to clean the air intake vent. 

If water is applied to the hybrid 

battery (traction battery) or 

other components, a malfunc-

tion or fire may occur.

●

Before cleaning the air intake 

vents, make sure to turn the 

power switch off to stop the 

hybrid system.

●

Do not put a hand or leg in the 

air intake vent. If it is caught in a 

cooling fan, or if it touches a 

high voltage part that results in 

an electric shock, death or seri-

ous injuries may result.

NOTICE

■

When cleaning the air intake 

vent

Do not use an air blow gun, etc.

Dust may be blown out, possibly 

causing a malfunction or output 

restriction of the hybrid battery 

(traction battery).

■

To prevent damage to the 

vehicle

Observe the following precau-

tions.

●

Do not allow liquid or foreign 

matter to enter the air intake 

vent.

●

Make sure to reinstall the filter 

and cover to their original posi-

tions after cleaning.

●

Do not install anything to the air 

intake vent other than the exclu-

sive filter for this vehicle or use 

the vehicle without the filter 

installed.

■

To prevent damage to the fil-

ter

Observe the following precau-

tions.

If the filter is damaged, have it 

replaced with a new filter by your 

Toyota dealer.

●

Do not use an air blow gun, etc.

●

Do not press hard a vacuum 

cleaner, etc. against the filter.

●

Do not use a hard brush, such 

as a metal brush.

●

Do not break the fold of the fil-

ter.

423

6-3. Do-it-yourself maintenance

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■

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



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 the 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.

3

Remove the depleted battery.

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.
When removing the battery, use a 

screwdriver of an appropriate size. 

Insert a new battery with the “+” ter-

Electronic key battery

Replace the battery with a 
new one if it is depleted.

You will need the follow-
ing items:

Replacing the battery

424

6-3. Do-it-yourself maintenance

minal facing up.

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

■

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.

425

6-3. Do-it-yourself maintenance

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1

Turn the power switch off.

2

Open the fuse box cover.



Engine compartment: type A 
fuse box (if equipped)

Push the tab in and lift the lid off.



Engine compartment: type B 
fuse box

Push the tab 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.



Right side luggage compart-
ment

Folding down the third seats. 
(



P.152)

Disengage the claw and open the 
cover.

3

Remove the fuse.

Only type A fuse can be removed 

using the pullout tool.

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

426

6-3. Do-it-yourself maintenance

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

■

After a fuse is replaced

●

If the lights do not turn on even 

after the fuse has been replaced, 

a bulb may need replacement. 

(



P.428)

●

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 connected to circuits 

designed to prevent overload, 

non-genuine parts or 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.

427

6-3. Do-it-yourself maintenance

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Adjustment bolt A
Adjustment bolt B



Make sure the vehicle has a 
full tank of gasoline and the 
area around the headlight is 
not deformed.



Park the vehicle on level 
ground.



Make sure the tire inflation 
pressure is at the specified 
level.



Have someone sit in the 
driver’s seat.



Bounce the vehicle several 
times.

WARNING

■

Fuse box near the power con-

trol unit

Never check or replace the fuses 

as there are high voltage parts 

and wiring near the fuse box.

Doing so may cause electric 

shock, resulting in death or seri-

ous injury.

NOTICE

■

Before replacing fuses

Have the cause of electrical over-

load determined and repaired by 

your Toyota dealer as soon as 

possible.

Headlight aim

Vertical movement adjust-
ing bolts

Before checking the head-
light aim

428

6-3. Do-it-yourself maintenance

1

Using a Phillips-head screw-
driver, turn bolt A in either 
direction.

Remember the turning direction 

and the number of turns.

2

Turn bolt B the same number 
of turns and in the same 
direction as step 

1

.

If the headlight cannot be adjusted 

using this procedure, take the vehi-

cle to your Toyota dealer to adjust 

the headlight aim.

Check the wattage of the light 
bulb to be replaced. (



P.496)



P.516



Front (type A)

Front turn signal lights/park-
ing lights

Adjusting the headlight 
aim

Light bulbs

You may replace the follow-
ing bulbs by yourself. The 
difficulty level of replace-
ment 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

Turning off the power 
back door main switch

Bulb locations

429

6-3. Do-it-yourself maintenance

6

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Front side marker lights



Front (type B)

Front turn signal lights
Front side marker lights



Front (type C)

Front turn signal lights/park-
ing lights
Front side marker lights



Rear

Rear turn signal lights
Back-up lights

License plate lights

■

Lights that need to be 
replaced by your Toyota 
dealer



Headlight low beams



Headlight high beams



Daytime running lights (types 
A and C)



Daytime running lights/park-
ing lights (type B)



Front fog lights



Side turn signal lights



Tail lights/stop lights



Rear side marker lights



Tail lights



High mounted stoplight



Outer foot lights (if equipped)

■

LED lights

The lights other than the following 

lights each 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.

●

Front turn signal lights/parking 

lights (types A and C)

●

Front turn signal lights (type B)

●

Front side marker lights

●

Rear turn signal lights

●

Back-up lights

●

License plate lights

■

Condensation build-up on the 

inside of the lens

Temporary condensation build-up 

on the inside of the light lens does 

not indicate a malfunction. Contact 

your Toyota dealer for more informa-

tion in the following situations:

●

Large drops of water have built up 

430

6-3. Do-it-yourself maintenance

on the inside of the lens.

●

Water has built up inside the light.

■

When replacing light bulbs



P.426

■

Front turn signal 
lights/parking lights (types 
A and C) and front turn sig-
nal lights (type B)

1

Turn the bulb base counter-
clockwise and remove it.

2

Remove the light bulb.

3

Install a new light bulb, and 
then install the bulb base to 
the light unit by inserting it 
and turning the bulb base 
clockwise.

After installing the bulb base, wig-

gle it lightly to make sure it is 

securely installed and turn the lights 

and turn signal lights on to visually 

check that there is no light leaking 

from between the bulb base and 

light unit.

■

Front side marker lights

1

Turn the bulb base counter-
clockwise and remove it.

2

Remove the light bulb.

3

Install a new light bulb, and 
then install the bulb base to 
the light unit by inserting it 
and turning the bulb base 
clockwise.

After installing the bulb base, wig-

gle it lightly to make sure it is 

securely installed and turn the lights 

Replacing light bulbs

431

6-3. Do-it-yourself maintenance

6

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on to visually check that there is no 

light leaking from between the bulb 

base and light unit.

■

Rear turn signal lights

1

Open the back door and 
using a flathead screwdriver, 
remove the cover.

To prevent damage to the vehicle, 

wrap the tip of the flathead screw-

driver with tape, etc.

2

Remove the securing 2 
screws and light unit.

Remove the light unit by pulling it 

straight back from the rear of the 

vehicle.

3

Disconnect the wire harness.

4

Turn the bulb base counter-
clockwise and remove it.

5

Remove the light bulb.

6

Install a new light bulb, and 
then install the bulb base to 
the light unit by inserting it 
and turning it clockwise.

After installing the bulb base, wig-

gle it lightly to make sure it is 

securely installed and turn on the 

turn signal lights to visually check 

that there is no light leaking from 

between the bulb base and light