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LEXUS LS 500H (2019 year). Instruction - part 24

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6-3. Do-it-yourself maintenance

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6-3.Do-it-yourself maintenance

Do-it-yourself service pre-
cautions

If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.

Maintenance

Items

Parts and tools

12-volt battery
condition
(

P.390)

• Grease
• Conventional

wrench (for terminal
clamp bolts)

Brake fluid level
(

P.388)

• FMVSS No.116 DOT

3 or SAE J1703
brake fluid
FMVSS No.116 DOT
4 or SAE J1704
brake fluid

• Rag or paper towel
• Funnel (used only for

adding brake fluid)

Engine/power
control unit cool-
ant level
(

P.387)

• “Toyota Super Long

Life Coolant” or a
similar high quality
ethylene gly-
col-based non-sili-
cate, non-amine,
non-nitrite and
non-borate coolant
with long-life hybrid
organic acid tech-
nology
For the U.S.A.:
“Toyota Super Long
Life Coolant” is
pre-mixed with 50%
coolant and 50%
deionized water.
For Canada:
“Toyota Super Long
Life Coolant” is
pre-mixed with 55%
coolant and 45%
deionized water.

• Funnel (used only for

adding coolant)

Engine oil level
(

P.385)

• “Toyota Genuine

Motor Oil” or equiv-
alent

• Rag or paper towel
• Funnel (used only for

adding engine oil)

Fuses (

P.411)

• Fuse with same

amperage rating as
original

Radiator and con-
denser (

P.388)



Items

Parts and tools

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Tire inflation pres-
sure (

P.405)

• Tire pressure gauge
• Compressed air

source

Washer fluid
(

P.389)

• Water or washer

fluid containing anti-
freeze (for winter
use)

• Funnel (used only for

adding water or
washer fluid)

WARNING

The engine compartment contains many

mechanisms and fluids that may move

suddenly, become hot, or become elec-

trically energized. To avoid death or seri-

ous injury, observe the following

precautions.

■

When working on the engine com-

partment

●

Make sure that the “ACCESSORY” or

“IGNITION ON” on the multi-infor-

mation display and the “READY” indi-

cator are both off.

●

Keep hands, clothing and tools away

from the moving fan and engine drive

belt.

●

Be careful not to touch the engine,

power control unit, radiator, exhaust

manifold, etc. right after driving as they

may be hot. Oil and other fluids may

also be hot.

●

Do not leave anything that may burn

easily, such as paper and rags, in the

engine compartment.

●

Do not smoke, cause sparks or expose

an open flame to fuel. Fuel fumes are

flammable.

Items

Parts and tools

■

When working near the electric cool-

ing fan or radiator grille

Be sure the power switch is off.

With the power switch in ON mode, the

electric cooling fan may automatically

start to run if the air conditioning is on

and/or the coolant temperature is high.

(

P.388)

■

Safety glasses

Wear safety glasses to prevent flying or

falling material, fluid spray, etc. from get-

ting in your eyes.

NOTICE

■

If you remove the air cleaner filter

Driving with the air cleaner filter

removed may cause excessive engine

wear due to dirt in the air.

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Pull the hood lock release lever.

The hood will pop up slightly.

Pull up the auxiliary catch lever and
lift the hood.

■

Front



2WD models

Hood

Opening the hood

WARNING

■

Pre-driving check

Check that the hood is fully closed and

locked.

If the hood is not locked properly, it may

open while the vehicle is in motion and

cause an accident, which may result in

death or serious injury.

Positioning a floor jack

When using a floor jack, follow the
instructions in the manual provided
with the jack and perform the oper-
ation safely.
When raising your vehicle with a
floor jack, position the jack cor-
rectly. Improper placement may
damage your vehicle or cause
injury.

Location of the jack point

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

AWD models

■

Rear

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Engine oil level dipstick (

P.385)

Power control unit coolant reservoir (

P.387)

Engine coolant reservoir (

P.387)

Engine oil filler cap (

P.386)

Brake fluid reservoir (

P.388)

Fuse boxes (

P.411)

Washer fluid tank (

P.389)

Engine coolant radiator (

P.388)

Power control unit coolant radiator (

P.388)

Electric cooling fan
Condenser (

P.388)

■

12-volt battery

P.390

Engine compartment

Components

A
B
C
D

E
F

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■

Removing the engine compartment cover



Outside



Front

■

Installing the clips

Push up center portion

Insert

Press

With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.

■

Checking the engine oil

Park the vehicle on level ground.
After warming up the engine and
turning off the hybrid system, wait
more than 5 minutes for the oil to

Engine compartment cover

NOTICE

■

Checking the engine compartment

cover after installation

Make sure that the cover is securely

installed in its original position.

Checking and adding the engine
oil

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6-3. Do-it-yourself maintenance

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drain back into the bottom of the
engine.

Holding a rag under the end, pull
the dipstick out.

Wipe the dipstick clean.

Reinsert the dipstick fully.

Holding a rag under the end, pull
the dipstick out and check the oil
level.

Low
Normal
Excessive

The shape of the dipstick may differ

depending on the type of vehicle or

engine.

Wipe the dipstick and reinsert it
fully.

■

Checking the oil type and prepar-
ing the item needed

Make sure to check the oil type and

prepare the items needed before add-
ing oil.
 Engine oil selection

P.460

 Oil quantity (Low

 Full)

1.6 qt. (1.5 L, 1.3 Imp. qt.)

 Item

Clean funnel

■

Adding engine oil

If the oil level is below or near the low
level mark, add engine oil of the same
type as that already in the engine.

Remove the oil filler cap by turning
it counterclockwise.

Add engine oil slowly, checking the
dipstick.

Install the oil filler cap by turning it
clockwise.

■

Engine oil consumption

A certain amount of engine oil will be con-

sumed while driving. In the following situa-

tions, oil consumption may increase, and

engine oil may need to be refilled in

between oil maintenance intervals.

●

When the engine is new, for example

directly after purchasing the vehicle or

after replacing the engine

●

If low quality oil or oil of an inappropriate

viscosity is used

●

When driving at high engine speeds or

A
B
C

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with a heavy load, or when driving while

accelerating or decelerating frequently

●

When leaving the engine idling for a long

time, or when driving frequently through

heavy traffic

■

After changing the engine oil

The engine oil maintenance data should be

reset. Perform the following procedures:

Press

of the meter control

switch to select

Press

to select “Vehicle Set-

tings” and then press

Press

to select “Oil Mainte-

nance” and then press

Press

to select “Yes” and

then press

A message will be displayed on the

multi-information display when the reset

procedure has been completed.

The coolant level is satisfactory if it is
between the “F” and “L” lines on the
reservoir when the engine is cold.

■

Engine coolant reservoir

Reservoir cap
“F” line
“L” line

If the level is on or below the “L” line, add
coolant up to the “F” line. (

P.450)

■

Power control unit coolant reser-
voir

The coolant level is satisfactory if it is
between the “F” and “L” lines on the
reservoir when the hybrid system is

WARNING

■

Used engine oil

●

Used engine oil contains potentially

harmful contaminants which may

cause skin disorders such as inflamma-

tion and skin cancer, so care should be

taken to avoid prolonged and

repeated contact. To remove used

engine oil from your skin, wash thor-

oughly with soap and water.

●

Dispose of used oil and filters only in a

safe and acceptable manner. Do not

dispose of used oil and filters in house-

hold trash, in sewers or onto the

ground.

Call your Lexus dealer, service station

or auto parts store for information

concerning recycling or disposal.

●

Do not leave used engine oil within the

reach of children.

NOTICE

■

To prevent serious engine damage

Check the oil level on a regular basis.

■

When replacing the engine oil

●

Be careful not to spill engine oil on the

vehicle components.

●

Avoid overfilling, or the engine could

be damaged.

●

Check the oil level on the dipstick

every time you refill the vehicle.

●

Be sure the engine oil filler cap is prop-

erly tightened.

Checking the coolant

A
B
C

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cold.

Reservoir cap
“F” line
“L” line

If the level is on or below the “L” line, add
coolant up to the “F” line. (

P.450)

■

Coolant selection

Only use “Toyota Super Long Life Coolant”

or a similar high quality ethylene glycol

based non-silicate, non-amine, non-nitrite,

and non-borate coolant with long-life

hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mix-

ture of 50% coolant and 50% deionized

water. (Minimum temperature: -31°F

[-35°C])
Canada:
“Toyota Super Long Life Coolant” is a mix-

ture of 55% coolant and 45% deionized

water. (Minimum temperature: -44°F

[-42°C])
For more details about coolant, contact

your Lexus dealer.

■

If the coolant level drops within a short

time of replenishing

Visually check the radiator, hoses,

engine/power control unit coolant reservoir

caps, drain cock and water pump.

If you cannot find a leak, have your Lexus

dealer test the cap and check for leaks in

the cooling system.

Check the radiator and condenser and
clear away any foreign objects. If either
of the above parts is extremely dirty or
you are not sure of their condition,
have your vehicle inspected by your
Lexus dealer.

■

Checking fluid level

The brake fluid level should be

A
B
C

WARNING

■

When the hybrid system is hot

Do not remove the engine/power control

unit coolant reservoir caps. (

P.453)

The cooling system may be under pres-

sure and may spray hot coolant if the cap

is removed, causing serious injuries, such

as burns.

NOTICE

■

When adding coolant

Coolant is neither plain water nor

straight antifreeze. The correct mixture

of water and antifreeze must be used to

provide proper lubrication, corrosion

protection and cooling. Be sure to read

the antifreeze or coolant label.

■

If you spill coolant

Be sure to wash it off with water to pre-

vent it from damaging parts or paint.

Checking the radiator and con-
denser

WARNING

■

When the hybrid system is hot

Do not touch the radiator or condenser

as they may be hot and cause serious

injuries, such as burns.

Checking and adding the brake
fluid

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between the “MAX” and “MIN” lines
on the tank.

■

Adding fluid

Make sure to check the fluid type and
prepare the necessary item.
 Fluid type

FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
brake fluid

 Item

Clean funnel

■

Brake fluid can absorb moisture from

the air

Excess moisture in the brake fluid can cause

a dangerous loss of braking efficiency. Use

only newly opened brake fluid.

If any washer does not work or the
warning message appears on the
multi-information display, the washer
tank may be empty. Add washer fluid.

WARNING

■

When filling the reservoir

Take care as brake fluid can harm your

hands and eyes and damage painted sur-

faces.

If fluid gets on your hands or in your eyes,

flush the affected area with clean water

immediately.
If you still experience discomfort, see a

doctor.

NOTICE

■

If the fluid level is low or high

It is normal for the brake fluid level to go

down slightly as the brake pads wear out

or when the fluid level in the accumulator

is high.

If the reservoir needs frequent refilling,

there may be a serious problem.

Adding the washer fluid

WARNING

■

When adding washer fluid

Do not add washer fluid when the hybrid

system is hot or operating as washer fluid

contains alcohol and may catch fire if

spilled on the engine, etc.

NOTICE

■

Do not use any fluid other than

washer fluid

Do not use soapy water or engine anti-

freeze instead of washer fluid.

Doing so may cause streaking on the

vehicle’s painted surfaces, as well as

damaging the pump leading to problems

of the washer fluid not spraying.

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The 12-volt battery is located in the
trunk under the luggage mat.

Removing the luggage mat:

P.350

■

Before recharging

When recharging, the 12-volt battery pro-

duces hydrogen gas which is flammable

and explosive. Therefore, observe the fol-

lowing precautions before recharging:

●

If recharging with the 12-volt battery

installed on the vehicle, be sure to discon-

nect the ground cable.

●

Make sure the power switch on the char-

ger is off when connecting and discon-

necting the charger cables to the 12-volt

battery.

■

After recharging/reconnecting the

12-volt battery

●

Unlocking the doors using the smart

access system with push-button may not

be possible immediately after reconnect-

ing the 12-volt battery. If this happens, use

the wireless remote control or the

mechanical key to lock/unlock the doors.

●

Start the hybrid system with the power

switch in ACCESSORY mode. The

hybrid system may not start with the

power switch turned off. However, the

hybrid system will operate normally from

the second attempt.

●

The power switch mode is recorded by

the vehicle. If the 12-volt battery is recon-

NOTICE

■

Diluting washer fluid

Dilute washer fluid with water as neces-

sary.

Refer to the freezing temperatures listed

on the label of the washer fluid bottle.

12-volt battery

Location

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nected, the vehicle will return the power

switch mode to the status it was in before

the 12-volt battery was disconnected.

Make sure to turn off the power before

disconnecting the 12-volt battery. Take

extra care when connecting the 12-volt

battery if the power switch mode prior to

discharge is unknown.

If the system will not start even after multiple

attempts, contact your Lexus dealer.

Make sure that the 12-volt battery ter-
minals are not corroded and that there
are no loose connections, cracks, or
loose clamps.

WARNING

■

Chemicals in the 12-volt battery

The 12-volt battery contains poisonous

and corrosive sulfuric acid and may pro-

duce hydrogen gas which is flammable

and explosive. To reduce the risk of death

or serious injury, take the following pre-

cautions while working on or near the

12-volt battery:

●

Do not cause sparks by touching the

12-volt battery terminals with tools.

●

Do not smoke or light a match near the

12-volt battery.

●

Avoid contact with eyes, skin and

clothes.

●

Never inhale or swallow electrolyte.

●

Wear protective safety glasses when

working near the 12-volt battery.

●

Keep children away from the 12-volt

battery.

■

Where to safely charge the 12-volt

battery

Always charge the 12-volt battery in an

open area. Do not charge the 12-volt bat-

tery in a garage or closed room where

there is insufficient ventilation.

■

Emergency measures regarding

electrolyte

●

If electrolyte gets in your eyes

Flush your eyes with clean water for at

least 15 minutes and get immediate

medical attention. If possible, continue

to apply water with a sponge or cloth

while traveling to the nearest medical

facility.

●

If electrolyte gets on your skin

Wash the affected area thoroughly. If

you feel pain or burning, get medical

attention immediately.

●

If electrolyte gets on your clothes

It can soak through clothing on to your

skin. Immediately take off the clothing

and follow the procedure above if nec-

essary.

●

If you accidentally swallow electrolyte

Drink a large quantity of water or milk.

Get emergency medical attention

immediately.

■

When replacing the 12-volt battery

Use a 12-volt battery designed for this

vehicle. Failure to do so may cause gas

(hydrogen) to enter the passenger com-

partment, causing a fire or explosion.
For replacement of the 12-volt battery,

contact your Lexus dealer.

NOTICE

■

When recharging the 12-volt battery

Never recharge the 12-volt battery while

the hybrid system is operating. Also, be

sure all accessories are turned off.

Exterior

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6-3. Do-it-yourself maintenance

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Terminals
Hold-down clamp

Check the 12-volt battery condition by
indicator color.

Blue: Good condition
Red: Charging is necessary.
Have the vehicle inspected by your
Lexus dealer.
Clear: Replacement is necessary.
Have the 12-volt battery checked
by your Lexus dealer.

Check if the treadwear indicators are
showing on the tires. Also check the
tires for uneven wear, such as excessive
wear on one side of the tread.

New tread
Worn tread
Treadwear indicator

The location of treadwear indicators is
shown by a “TWI” or “

” mark, etc.,

molded into the sidewall of each tire.
Replace the tires if the treadwear indica-
tors are showing on a tire.

Checking the 12-volt battery
condition

A
B

Tires

Replace or rotate tires in accor-
dance with maintenance schedules
and treadwear.

Checking tires

A
B
C

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When to replace your vehicle’s tires

Tires should be replaced if:

●

The treadwear indicators are showing on

a tire.

●

You have tire damage such as cuts, splits,

cracks deep enough to expose the fabric,

and bulges indicating internal damage

●

A tire goes flat repeatedly or cannot be

properly repaired due to the size or loca-

tion of a cut or other damage

If you are not sure, consult with your Lexus

dealer.

■

Tire life

Any tire over 6 years old must be checked

by a qualified technician even if it has sel-

dom or never been used or damage is not

obvious.

■

Maximum load of tire

Check that the maximum load of the

replacement tire is greater than 1/2 of the

Gross Axle Weight Ratings (GAWR) of

either the front axle or the rear axle, which-

ever is greater.
For the GAWR, see the Certification Label.

For the maximum load of the tire, see the

load limit at maximum cold tire inflation

pressure mentioned on the sidewall of the

tire. (

P.470)

■

Tire types

●

Summer tires

Summer tires are high-speed performance
tires best suited to highway driving under
dry conditions. Since summer tires do not
have the same traction performance as
snow tires, summer tires are inadequate for
driving on snow-covered or icy roads. For
driving on snow-covered roads or icy

roads, the use of snow tires is recom-
mended. When installing snow tires, be
sure to replace all four tires.

●

All season tires

All season tires are designed to provide
better traction in snow and to be adequate
for driving in most winter conditions as well
as for use year-round. All season tires,
however, do not have adequate traction
performance compared with snow tires in
heavy or loose snow. Also, all season tires
fall short in acceleration and handling per-
formance compared with summer tires in
highway driving.

●

Snow tires

For driving on snow-covered roads or icy
roads, we recommend using snow tires. If
you need snow tires, select tires of the
same size, construction and load capacity
as the originally installed tires. Since your
vehicle has radial tires as original equip-
ment, make sure your snow tires also have
radial construction. Do not install studded
tires without first checking local regula-
tions for possible restrictions. Snow tires
should be installed on all wheels.
(

P.309)

■

If the tread on snow tires wears down

below 0.16 in. (4 mm)

The effectiveness of the tires as snow tires is

lost.

WARNING

■

When inspecting or replacing tires

Observe the following precautions to

prevent accidents.

Failure to do so may cause damage to

parts of the drive train as well as danger-

ous handling characteristics, which may

lead to an accident resulting in death or

serious injury.

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

Vehicles with front and rear tires of
the same size

Rotate the tires in the order shown.

To equalize tire wear and extend tire life,
Lexus recommends that tire rotation is car-
ried out at the same interval as tire inspec-
tion.
Do not fail to initialize the tire pressure
warning system after tire rotation.



Vehicles with front and rear tires of
differing sizes

Tires cannot be rotated.

When run-flat tires are installed, the
vehicle can be driven for a maximum of
100 miles (160 km) at a speed below
50 mph (80 km/h) after any tire goes
flat. (However, the vehicle speed may
not increase to near 50 mph [80
km/h] depending on weather or driv-
ing conditions.)

A run-flat tire has a

mark on

the side wall.

Make sure to replace the flat tire before the
vehicle has been driven for near 100 miles
(160 km). Also, do not use a repaired tire.

■

Run-flat tires

●

The run-flat tires are for only this vehicle.

Do not use the tires on other vehicles.

●

Do not mix run-flat tires and normal tires.

●

If non-genuine Lexus wheels are used, it

may be impossible to sufficiently demon-

strate the performance of run-flat tires.

Your vehicle is equipped with a tire
pressure warning system that uses tire
pressure warning valves and transmit-
ters to detect low tire inflation pressure

WARNING

●

Do not mix tires of different makes,

models or tread patterns.

Also, do not mix tires of remarkably

different treadwear.

●

Do not use tire sizes other than those

recommended by Lexus.

●

Do not mix differently constructed

tires (radial, bias-belted or bias-ply

tires).

●

Do not mix summer, all season and

snow tires.

●

Do not use tires that have been used

on another vehicle.

Do not use tires if you do not know

how they were used previously.

NOTICE

■

Driving on rough roads

Take particular care when driving on

roads with loose surfaces or potholes.

These conditions may cause losses in tire

inflation pressure, reducing the cushion-

ing ability of the tires. In addition, driving

on rough roads may cause damage to

the tires themselves, as well as the vehi-

cle’s wheels and body.

Tire rotation

Run-flat tires

Tire pressure warning system

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before serious problems arise.
 The tire pressure detected by the

tire pressure warning system can be
displayed on the multi-information
display. (

P.90)

 If the tire pressure drops below a

predetermined level, the driver is
warned by a screen display and a
warning light. (

P.428)

■

Routine tire inflation pressure checks

The tire pressure warning system does not

replace routine tire inflation pressure

checks. Make sure to check tire inflation

pressure as part of your routine of daily

vehicle checks.

■

Tire inflation pressure

●

It may take a few minutes to display the

tire inflation pressure after the power

switch is turned to ON mode. It may also

take a few minutes to display the tire infla-

tion pressure after inflation pressure has

been adjusted.

●

Tire inflation pressure changes with tem-

perature. The displayed values may also

be different from the values measured

using a tire pressure gauge.

■

Situations in which the tire pressure

warning system may not operate prop-

erly

●

In the following cases, the tire pressure

warning system may not operate prop-

erly.

• If non-genuine Lexus wheels are used.

• If a tire has been replaced with a tire that

is not an OE (Original Equipment) tire.

• If a tire has been replaced with a tire that

is not of the specified size.

• If tire chains, etc. are installed.

• An auxiliary-supported run-flat tire is

equipped.

• If a window tint that affects the radio wave

signals is installed.

• If there is a lot of snow or ice on the vehi-

cle, particularly around the wheels or

wheel housings.

• If the tire inflation pressure is much higher

than the specified level.

• If wheels not equipped with tire pressure

warning valves and transmitter are used.

• If the ID code on the tire pressure warn-

ing valves and transmitters is not regis-

tered in the tire pressure warning

computer.

●

Performance may be affected in the fol-

lowing situations.

• When driving near a TV tower, electric

power plant, gas station, radio station,

large display, airport or other facility that

generates strong radio waves or electri-

cal noise

• When carrying a portable radio, cellular

phone, cordless phone or other wireless

communication device

If tire position information is not correctly

displayed due to the radio wave conditions,

the display may be corrected by changing

the location of the vehicle as the radio wave

conditions may change.

●

When the vehicle is stopped, the time

taken for the warning to start or turn off

may be longer.

●

When the inflation pressure of a tire

drops rapidly, for example when a tire has

burst, the warning may not operate.

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