Lexus ES300H (2024 year). Manual in english - page 13

 

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Lexus ES300H (2024 year). Manual in english - page 13

 

 

385

7-2. Steps to take in an emergency

7

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When the electronic key does not work 

properly

Make sure that the smart access system 

with push-button start has not been deac-

tivated in the customization setting. If it is 

off, turn the function on. (Customizable 

features: 

P.420)

Check if battery-saving mode is set. If it is 

set, cancel the function. (

P.117)

The electronic key function may have 

stopped. (

P.117)

Use the mechanical key (

P.102) in 

order to perform the following opera-

tions:

Unlocking the door

1

Pull the driver’s door handle and 
insert the mechanical key.

2

Unlock the door.

3

Remove the key, return the handle, 
and then pull the handle again.

Locking the door

1

With the door open, push down the 
inside lock button.

2

Close the door.

If the electronic key does not 
operate properly

If communication between the 
electronic key and vehicle is inter-
rupted (

P.117) or the electronic 

key cannot be used because the 
battery is depleted, the smart 
access system with push-button 
start and wireless remote control 
cannot be used. In such cases, the 
doors and trunk can be opened and 
the hybrid system can be started by 
following the procedure below.

NOTICE

In case of a smart access system with 

push-button start malfunction or 

other key-related problems

Take your vehicle with all the electronic 

keys provided with your vehicle (includ-

ing the card key) to your Lexus dealer as 

soon as possible.

Locking and unlocking the 
doors, opening the trunk and 
using the key linked functions

386

7-2. Steps to take in an emergency

Opening the trunk

Turn the mechanical key clockwise to 
open.

Key linked functions

1

Closes the windows and the moon roof 
(turn and hold)

2

Opens the windows and the moon roof 
(turn and hold)

These settings must be customized at your 

Lexus dealer.

1

Ensure that the shift lever is in P and 
depress the brake pedal.

2

Touch the Lexus emblem side of 
the electronic key to the power 
switch.

When the electronic key is detected, a 

buzzer sounds and the power switch will 

turn to ON mode.
When the smart access system with push-

button start is deactivated in customization 

setting, the power switch will turn to 

ACCESSORY mode.

3

Firmly depress the brake pedal and 

check that 

 is shown on the 

multi-information display.

4

Press the power switch shortly and 
firmly.

In the event that the hybrid system still 
cannot be started, contact your Lexus 
dealer.

Stopping the hybrid system

Set the parking brake, shift the shift lever to 

P and press the power switch as you nor-

mally do when stopping the hybrid system.

Electronic key battery

As the above procedure is a temporary 

measure, it is recommended that the elec-

tronic key battery be replaced immediately 

when the battery is depleted. (

P.343)

WARNING

When using the mechanical key and 

operating the power windows or 

moon roof

Operate the power window after check-

ing to make sure that there is no possibil-

ity of any passenger having any of their 

body parts caught in the window or 

moon roof. 

Also, do not allow children to operate the 

mechanical key. It is possible for children 

and other passengers to get caught in 

the power window or moon roof.

Starting the hybrid system

387

7-2. Steps to take in an emergency

7

When trouble

 ari

ses

Alarm (for Canada)

Using the mechanical key to lock the doors 

will not set the alarm system.
If a door is unlocked using the mechanical 

key when the alarm system is set, the alarm 

may be triggered.

Changing power switch modes

Release the brake pedal and press the 

power switch in step 

3

 above.

The hybrid system does not start and modes 

will be changed each time the switch is 

pressed. (

P.151)

If you have a set of jumper (or booster) 
cables and a second vehicle with a 12-
volt battery, you can jump start your 
vehicle using the following procedure.

1

Confirm that the electronic key is 
being carried.

When connecting the jumper (or booster) 

cables, depending on the situation, the 

alarm may activate and doors locked. 

(

P.69)

2

Open the hood (

P.317) and 

open the fuse box cover.

If the 12-volt battery is dis-
charged

The following procedures may be 
used to start the hybrid system if the 
12-volt battery is discharged.
You can also call your Lexus dealer 
or a qualified repair shop.

Restarting the hybrid system

388

7-2. Steps to take in an emergency

Push the tab in and lift the lid off.

3

Open the exclusive jump starting 
terminal cover.

4

Connect a positive jumper cable clamp to 

 on your vehicle and connect the 

clamp on the other end of the positive cable to 

 on the second vehicle.

Then, connect a negative cable clamp to 

 on the second vehicle and con-

nect the clamp at the other end of the negative cable to 

.

Use jumper cables that can reach the specified terminals and connecting point.

Exclusive jump starting terminal (your vehicle)

Positive (+) battery terminal (second vehicle)

Negative (-) battery terminal (second vehicle)

Metallic point shown in the illustration

5

Start the engine of the second vehi-
cle. Increase the engine speed 
slightly and maintain at that level for 
approximately 5 minutes to 

recharge the 12-volt battery of your 
vehicle.

6

Maintain the engine speed of the 
second vehicle and start the hybrid 

A

B

C

D

A
B
C
D

389

7-2. Steps to take in an emergency

7

When trouble

 ari

ses

system of your vehicle by turning 
the power switch to ON mode.

7

Make sure the “READY” indicator 
comes on. If the indicator does not 
come on, contact your Lexus 
dealer.

8

Once the vehicle’s hybrid system 
has started, remove the jumper 
cables in the exact reverse order 
from which they were connected.

9

Close the exclusive jump starting 
terminal cover, and reinstall the 
fuse box cover to its original posi-
tion.

Once the hybrid system starts, have the 

vehicle inspected at your Lexus dealer as 

soon as possible.

Starting the hybrid system when the 12-

volt battery is discharged

The hybrid system cannot be started by 

push-starting.

To prevent 12-volt battery discharge

Turn off the headlights and the audio sys-

tem while the hybrid system is stopped.

Turn off any unnecessary electrical com-

ponents when the vehicle is running at a 

low speed for an extended period, such 

as in heavy traffic.

When the 12-volt battery is removed or 

discharged

Information stored in the ECU is cleared. 

When the 12-volt battery is depleted, 

have the vehicle inspected at your Lexus 

dealer.

Some systems may require initialization. 

(

P.429)

When removing the 12-volt battery ter-

minals

When the 12-volt battery terminals are 

removed, the information stored in the 

ECU is cleared. Before removing the 12-

volt battery terminals, contact your Lexus 

dealer.

Charging the 12-volt battery

The electricity stored in the 12-volt battery 

will discharge gradually even when the 

vehicle is not in use, due to natural dis-

charge and the draining effects of certain 

electrical appliances. If the vehicle is left for 

a long time, the 12-volt battery may dis-

charge, and the hybrid system may be 

unable to start. (The 12-volt battery 

recharges automatically while the hybrid 

system is operating.)

When recharging or replacing the 12-

volt battery

In some cases, it may not be possible to 

unlock the doors using the smart access 

system with push-button start when the 

12-volt battery is discharged. Use the 

wireless remote control or the mechani-

cal key to lock or unlock the doors.

The hybrid system may not start on the 

first attempt after the 12-volt battery has 

recharged but will start normally after the 

second attempt. This is not a malfunction.

The power switch mode is memorized by 

the vehicle. When the 12-volt battery is 

reconnected, the system will return to the 

mode it was in before the 12-volt battery 

was discharged. Before disconnecting 

the 12-volt battery, turn the power switch 

off. 

If you are unsure what mode the power 

switch was in before the 12-volt battery 

discharged, be especially careful when 

reconnecting the 12-volt battery.

When replacing the 12-volt battery

Use a 12-volt battery that conforms to 

European regulations.

Use a 12-volt battery that the case size is 

same as the previous one (LN2), 20 hour 

rate capacity (20HR) is equivalent 

(60Ah) or greater, and performance rat-

ing (CCA) is equivalent (563A) or 

greater.

• If the sizes differ, the 12-volt battery can-

not be properly secured.

• If the 20 hour rate capacity is low, even if 

the time period where the vehicle is not 

used is a short time, the 12-volt battery 

may discharge and hybrid system may 

390

7-2. Steps to take in an emergency

not be able to start.

Use a 12-volt battery with a handle. If a 

12-volt battery without a handle is used, 

removal is more difficult.

After exchanging, firmly attach the fol-

lowing items to the exhaust hole of the 

12-volt battery.

• Use the exhaust hose that was attached 

to the 12-volt battery before exchanging.

• Use the exhaust hole plug included with 

the new 12-volt battery or the one 

installed on the battery prior to the 

replacement. (Depending on the new 12-

volt battery installed, the exhaust hole 

may be plugged.)

Exhaust hole plug

Exhaust hole

Exhaust hose

For details, consult your Lexus dealer.

WARNING

When removing the 12-volt battery 

terminals

Always remove the negative (-) terminal 

first. If the positive (+) terminal contacts 

any metal in the surrounding area when 

the positive (+) terminal is removed, a 

spark may occur, leading to a fire in addi-

tion to electrical shocks and death or 

serious injury.

A

B

C

Avoiding 12-volt battery fires or 

explosions

Observe the following precautions to 

prevent accidentally igniting the flamma-

ble gas that may be emitted from the 12-

volt battery:

Make sure each jumper cable is con-

nected to the correct terminal and that 

it is not unintentionally in contact with 

any other than the intended terminal.

Do not allow the other end of the 

jumper cable connected to the “+” ter-

minal to come into contact with any 

other parts or metal surfaces in the 

area, such as brackets or unpainted 

metal.

Do not allow the + and - clamps of the 

jumper cables to come into contact 

with each other.

Do not smoke, use matches, cigarette 

lighters or allow open flame near the 

12-volt battery.

12-volt battery precautions

The 12-volt battery contains poisonous 

and corrosive acidic electrolyte, while 

related parts contain lead and lead com-

pounds. Observe the following precau-

tions when handling the 12-volt battery:

When working with the 12-volt battery, 

always wear safety glasses and take 

care not to allow any battery fluids 

(acid) to come into contact with skin, 

clothing or the vehicle body.

Do not lean over the 12-volt battery.

In the event that battery fluid comes 

into contact with the skin or eyes, 

immediately wash the affected area 

with water and seek medical attention.

Place a wet sponge or cloth over the 

affected area until medical attention 

can be received.

Always wash your hands after han-

dling the 12-volt battery support, ter-

minals, and other battery-related 

parts.

391

7-2. Steps to take in an emergency

7

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If the engine coolant temperature 
gauge enters the red zone or 
“Engine Coolant Temp High Stop in 
a Safe Place See Owner’s Manual” 
is shown on the multi-information 
display

1

Stop the vehicle in a safe place and 
turn off the air conditioning system, 
and then stop the hybrid system.

2

If you see steam: 
Carefully lift the hood after the 
steam subsides.
If you do not see steam: 
Carefully lift the hood.

3

After the hybrid system has cooled 
down sufficiently, inspect the hoses 
and cooling system for leaks.

WARNING

Do not allow children near the 12-volt 

battery.

After recharging the 12-volt battery

Have the 12-volt battery inspected at 

your Lexus dealer as soon as possible. If 

the 12-volt battery is deteriorating, con-

tinued use may cause the 12-volt battery 

to emit a malodorous gas, which may be 

detrimental to the health of passengers.

When exchanging the 12-volt battery

After replacing, securely attach the 

exhaust hose and exhaust hole plug to 

the exhaust hole of the replaced 12-volt 

battery. If not properly installed, gases 

(hydrogen) may leak into the vehicle 

interior, and there is the possible danger 

of the gas igniting and exploding.

NOTICE

When handling jumper cables

When connecting the jumper cables, 

ensure that they do not become entan-

gled in the cooling fan or engine drive 

belt.

When connecting jumper cables

Make sure to connect jumper cables to 

the specified terminals and connecting 

point. Failure to do so may adversely 

affect the electronic devices or damage 

to them.

To prevent damaging the vehicle

The exclusive jump starting terminal is to 

be used when charging the 12-volt bat-

tery from another vehicle in an emer-

gency. It cannot be used to jump start 

another vehicle.

If your vehicle overheats

The following may indicate that 
your vehicle is overheating.

The engine coolant temperature 
gauge (

P.76, 80) is in the red 

zone or a loss of hybrid system 
power is experienced. (For exam-
ple, the vehicle speed does not 
increase.)

“Engine Coolant Temp High Stop 
in a Safe Place See Owner’s 
Manual” or “Hybrid system over-
heated Output power reduced” is 
shown on the multi-information 
display.

Steam comes out from under the 
hood.

Correction procedures

392

7-2. Steps to take in an emergency

If a large amount of coolant leaks, immedi-

ately contact your Lexus dealer.

Radiator

Cooling fan

4

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

Reservoir

“F” line

“L” line

Coolant inlet cap

5

Add coolant if necessary.

Water can be used in an emergency if 

engine coolant is unavailable.
If water was added in an emergency, have 

the vehicle inspected at your Lexus dealer 

as soon as possible.

6

Start the hybrid system and turn the 
air conditioning system on to check 
that the radiator cooling fan oper-
ates and to check for coolant leaks 
from the radiator or hoses.

The fan operates when the air conditioning 

system is turned on immediately after a 

cold start. Confirm that the fan is operating 

by checking the fan sound and air flow. If it 

is difficult to check these, turn the air con-

ditioning system on and off repeatedly. 

(The fan may not operate in freezing tem-

peratures.)

7

If the fan is not operating: 
Stop the hybrid system immediately 
and contact your Lexus dealer.
If the fan is operating: 
Have the vehicle inspected at the 
nearest Lexus dealer.

If “Hybrid system overheated Out-
put power reduced” is shown on the 
multi-information display

1

Stop the vehicle in a safe place.

2

Stop the hybrid system and care-
fully lift the hood.

A
B

A
B
C
D

393

7-2. Steps to take in an emergency

7

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3

After the hybrid system has cooled 
down, inspect the hoses and radia-
tor core (radiator) for any leaks.

Radiator

Cooling fan

If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.

4

The coolant level is satisfactory if it 
is between the “FULL” and “LOW” 
lines on the reservoir.

Reservoir

“FULL” line

“LOW” line

5

Add coolant if necessary.

Water can be used in an emergency if 

power control unit coolant is unavailable.
If water was added in an emergency, have 

the vehicle inspected at your Lexus dealer 

as soon as possible.

6

After stopping the hybrid system 
and waiting for 5 minutes or more, 
start the hybrid system again and 
check if “Hybrid system over-
heated Output power reduced” is 
shown on the multi-information dis-
play.

If the message does not disappear: 

Stop the hybrid system and contact your 

Lexus dealer.
If the message is not displayed: 

The hybrid system temperature has 

dropped and the vehicle may be driven 

normally.
However, if the message appears again 

frequently, contact your Lexus dealer.

A

B

A

B

C

WARNING

When inspecting under the hood of 

your vehicle

Observe the following precautions. 

Failure to do so may result in serious 

injury such as burns.

If steam is seen coming from under the 

hood, do not open the hood until the 

steam has subsided. The engine com-

partment may be very hot.

394

7-2. Steps to take in an emergency

1

Stop the hybrid system. Set the 
parking brake and shift the shift 
lever to P.

2

Remove the mud, snow or sand 
from around the front wheels.

3

Place wood, stones or some other 
material under the front wheels to 
help provide traction.

4

Restart the hybrid system.

5

Shift the shift lever to D or R and 
release the parking brake. Then, 
while exercising caution, depress 
the accelerator pedal.

When it is difficult to free the vehicle

Press the 

 switch to turn off TRAC.

WARNING

After the hybrid system has been 

turned off, check that the “READY” 

indicator are off.

When the hybrid system is operating, 

the gasoline engine may automatically 

start, or the cooling fan may suddenly 

operate even if the gasoline engine 

stops. Do not touch or approach rotat-

ing parts such as the fan, which may 

lead to fingers or clothing (especially a 

tie, a scarf or a muffler) getting caught, 

resulting in serious injury.

Do not loosen the coolant inlet cap or 

coolant reservoir caps while the hybrid 

system and radiator are hot.

High temperature steam or coolant 

could spray out.

NOTICE

When adding engine/power control 

unit coolant

Add coolant slowly after the hybrid sys-

tem has cooled down sufficiently. Adding 

cool coolant to a hot hybrid system too 

quickly can cause damage to the hybrid 

system.

To prevent damage to the cooling 

system

Observe the following precautions:

Avoid contaminating the coolant with 

foreign matter (such as sand or dust 

etc.).

Do not use any coolant additive.

If the vehicle becomes stuck

Carry out the following procedures 
if the tires spin or the vehicle 
becomes stuck in mud, dirt or snow:

Recovering procedure

395

7-2. Steps to take in an emergency

7

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WARNING

When attempting to free a stuck vehi-

cle

If you choose to push the vehicle back 

and forth to free it, make sure the sur-

rounding area is clear to avoid striking 

other vehicles, objects or people. The 

vehicle may also lunge forward or lunge 

back suddenly as it becomes free. Use 

extreme caution.

When shifting the shift lever

Be careful not to shift the shift lever with 

the accelerator pedal depressed. 

This may lead to unexpected rapid accel-

eration of the vehicle that may cause an 

accident resulting in death or serious 

injury.

NOTICE

To avoid damaging the transmission 

and other components

Avoid spinning the front wheels and 

depressing the accelerator pedal 

more than necessary.

If the vehicle remains stuck even after 

these procedures are performed, the 

vehicle may require towing to be 

freed.

396

7-2. Steps to take in an emergency

397

8

8

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Vehicle specifications

8-1. Specifications

Maintenance data (fuel, oil level, 

etc.) ..............................................

398

Fuel information.........................

406

Tire information..........................

408

8-2. Customization

Customizable features.............

417

8-3. Items to initialize

Items to initialize ........................

429

398

8-1. Specifications

8-1.Specifications

*

: Unladen  vehicle

Vehicle identification number

The vehicle identification number 
(VIN) is the legal identifier for your 
vehicle. This is the primary identifica-
tion number for your Lexus. It is used in 
registering the ownership of your vehi-
cle.
This number is on the top left of the 
instrument panel.

This number is also on the Certification 
Label.

Maintenance data (fuel, oil level, etc.)

Dimensions and weight

Overall length

195.9 in. (4975 mm)

Overall width

73.4 in. (1865 mm)

Overall height

*

56.9 in. (1445 mm)

Wheelbase

113.0 in. (2870 mm)

Front tread

*

With 17-inch tires

63.0 in. (1599 mm)

With 18-inch tires/19-inch tires

62.6 in. (1589 mm)

Rear tread

*

With 17-inch tires

63.3 in. (1609 mm)

With 18-inch tires/19-inch tires

63.0 in. (1600 mm)

Vehicle capacity weight (Occupants + luggage)

905 lb. (410 kg)

Seating capacity

Seating capacity

5 (Front 2, Rear 3)

Vehicle identification

399

8-1. Specifications

8

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tions

Engine number

The engine number is located as 

shown.

Engine

Model

2.5 L 4-cylinder (A25A-FXS)

Type

4-cylinder in line, 4-cycle, gasoline

Bore and stroke

3.44 

 4.07 in. (87.5 

 103.4 mm)

Displacement

151.8 cu.in. (2487 cm

3

)

Valve clearance (Engine cold)

Automatic adjustment

Fuel

Fuel type

Unleaded gasoline only

Octane Rating

87 (Research Octane Number 91) or 
higher

Fuel tank capacity (Reference)

13.0 gal. (49.3 L, 10.8 Imp.gal.)

Electric motor (traction motor)

Type

Permanent magnet synchronous motor

Maximum output

88 kW

Maximum torque

149 ft•lbf (202 N•m, 20.6 kgf•m)

400

8-1. Specifications

Except for Canada

For Canada

Oil capacity (Drain and refill [Ref-
erence

*

])

*

: The engine oil capacity is a reference 

quantity to be used when changing the 
engine oil. When actually adding the 
engine oil, make sure that the oil level is 
between the low level mark and refill 
upper limit mark (

P.320). Warm up 

the engine and turn off the hybrid sys-
tem, wait about 5 minutes, and check the 
oil level on the dipstick.

Engine oil selection

“Toyota Genuine Motor Oil” is used in 
your Lexus vehicle. Use Lexus 
approved “Toyota Genuine Motor 

Oil” or equivalent to satisfy the follow-
ing grade and viscosity.
Oil grade: 
ILSAC GF-6B multigrade engine oil
Recommended viscosity:
SAE 0W-16
SAE 0W-16 is the best choice for 
good fuel economy and good starting 
in cold weather.
If SAE 0W-16 is not available, SAE 
0W-20 oil may be used. However, it 
must be replaced with SAE 0W-16 at 
the next oil change.

Hybrid battery (traction battery)

Type

Lithium-ion battery

Voltage

3.7 V/cell

Capacity

4.0 Ah

Quantity

70 cells

Nominal voltage

259 V

Type

Nickel-metal hydride battery

Voltage

7.2 V/module

Capacity

6.5 Ah (3HR)

Quantity

34 modules

Nominal voltage

244.8 V

Lubrication system

With filter

4.8 qt. (4.5 L, 4.0 Imp. qt.)

Without filter 4.4 qt. (4.2 L, 3.7 Imp. qt.)

401

8-1. Specifications

8

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tions

Outside temperature

Oil viscosity (0W-16 is explained here 
as an example):
• The 0W in 0W-16 indicates the 

characteristic of the oil which allows 
cold startability. Oils with a lower 
value before the W allow for easier 
starting of the engine in cold 
weather.

• The 16 in 0W-16 indicates the vis-

cosity characteristic of the oil when 

the oil is at high temperature. An oil 
with a higher viscosity (one with a 
higher value) may be better suited if 
the vehicle is operated at high 
speeds, or under extreme load con-
ditions.

How to read oil container label:
API registered mark is added to some 
oil containers to help you select the oil 
you should use.

*

: The fluid capacity is a reference quantity.

If replacement is necessary, contact your Lexus dealer.

A

Cooling system

Capacity

*

Gasoline engine

6.4 qt. (6.1 L, 5.4 Imp.qt.)

Power control unit

1.9 qt. (1.8 L, 1.6 Imp.qt.)

Coolant type

Use either of the following:

“Toyota Super Long Life Coolant”

Similar high-quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite, and non-borate coolant with long-
life hybrid organic acid technology

Do not use plain water alone.

402

8-1. Specifications

Spark plug

*

: The fluid capacity is a reference quantity.

If replacement is necessary, contact your Lexus dealer.

Ignition system

Make

DENSO FC16HR-Q8

Gap

0.031 in. (0.8 mm)

NOTICE

Iridium-tipped spark plugs

Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

Electrical system (12-volt battery)

Open voltage at 68°F (20°C):

12.3 V or higher
(Turn the power switch off and turn on the 
high beam headlights for 30 seconds.)
If the voltage is lower than the standard 
value, charge the battery.

Charging rates

5 A max.

Hybrid transmission

Fluid capacity

*

4.1 qt. (3.9 L, 3.4 Imp.qt.)

Fluid type

Toyota Genuine ATF WS

NOTICE

Hybrid transmission fluid type

Using transmission fluid other than the above type may cause abnormal noise or vibra-

tion, or ultimately damage the transmission of your vehicle.

Brakes

Pedal clearance

*1

3.3 in. (85 mm) Min.

Pedal free play

0.04 

 0.24 in. (1.0 

 6.0 mm)

Brake pad wear limit

0.04 in. (1.0 mm)

403

8-1. Specifications

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*1

: Minimum pedal clearance when depressed with a force of 67.4 lbf (300 N, 30.6 kgf) 

while the hybrid system is operating.
When performing the brake pedal inspection, also be sure to check that the brake sys-
tem warning light is not illuminated when the hybrid system is operating. (If the brake 
system warning light is illuminated, refer to P.360.)

*2

: Make sure to confirm that the brake system warning light (yellow) does not illuminate. (If 

the brake system warning light illuminates, refer to P.360.)

Type A

*1

: 100 mph (160 km/h) or less

*2

: More than 100 mph (160 km/h)

Parking brake indicator

*2

When pushing the parking brake switch for 
1 to 2 seconds: comes on
When pulling the parking brake switch for 1 
to 2 seconds: turns off

Fluid type

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

Steering

Free play

Less than 1.2 in. (30 mm)

Tires and wheels

Tire size

215/55R17 94V, T155/70D17 110M 
(spare)

Tire inflation pressure 
(Recommended cold tire inflation pressure)

Front

36 psi (250 kPa, 2.5 kgf/cm

2

 or bar)

*1

46 psi (320 kPa, 3.2 kgf/cm

2

 or bar)

*2

Rear

36 psi (250 kPa, 2.5 kgf/cm

2

 or bar)

*1

46 psi (320 kPa, 3.2 kgf/cm

2

 or bar)

*2

Spare

60 psi (420 kPa, 4.2 kgf/cm

2

 or bar)

Wheel size

17 x 7 1/2J, 17 x 4T (spare)

Wheel nut torque

76 ft•lbf (103 N•m, 10.5 kgf•m)

404

8-1. Specifications

Type B

*1

: 100 mph (160 km/h) or less

*2

: More than 100 mph (160 km/h)

Type C

*1

: 137 mph (220 km/h) or less

*2

: More than 137 mph (220 km/h)

Tire size

235/45R18 94V, T155/70D17 110M 
(spare)

Tire inflation pressure 
(Recommended cold tire inflation pressure)

Front

35 psi (240 kPa, 2.4 kgf/cm

2

 or bar)

*1

46 psi (320 kPa, 3.2 kgf/cm

2

 or bar)

*2

Rear

35 psi (240 kPa, 2.4 kgf/cm

2

 or bar)

*1

46 psi (320 kPa, 3.2 kgf/cm

2

 or bar)

*2

Spare

60 psi (420 kPa, 4.2 kgf/cm

2

 or bar)

Wheel size

18 x 8J, 17 x 4T (spare)

Wheel nut torque

76 ft•lbf (103 N•m, 10.5 kgf•m)

Tire size

235/40R19 92V, T155/70D17 110M 
(spare)

Tire inflation pressure 
(Recommended cold tire inflation pressure)

Front

35 psi (240 kPa, 2.4 kgf/cm

2

 or bar)

*1

46 psi (320 kPa, 3.2 kgf/cm

2

 or bar)

*2

Rear

35 psi (240 kPa, 2.4 kgf/cm

2

 or bar)

*1

46 psi (320 kPa, 3.2 kgf/cm

2

 or bar)

*2

Spare

60 psi (420 kPa, 4.2 kgf/cm

2

 or bar)

Wheel size

19 x 8J, 17 x 4T (spare)

Wheel nut torque

76 ft•lbf (103 N•m, 10.5 kgf•m)

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*

: The 28/8 W bulb is used. However, only the 28 W filament illuminates.

Light bulbs (vehicles with single-beam headlights)

Light bulbs

Bulb No.

W

Type

Front turn signal lights

7444NA

28/8

*

Wedge base 

bulbs (amber)

Front side marker lights

W5W

5

Wedge base 

bulbs (clear)

406

8-1. Specifications

Gasoline quality

In very few cases, driveability problems may 

be caused by the brand of gasoline you are 

using. If driveability problems persist, try 

changing the brand of gasoline. If this does 

not correct the problem, consult your Lexus 

dealer.

Recommendation of the use of gasoline 

containing detergent additives

Lexus recommends the use of gasoline 

that contains detergent additives to avoid 

the build-up of engine deposits.

All gasoline sold in the U.S.A. contains 

minimum detergent additives to clean 

and/or keep clean intake systems, per 

EPA’s lowest additives concentration 

program.

Lexus strongly recommends the use of 

Top Tier Detergent Gasoline. For more 

information on Top Tier Detergent Gas-

oline and a list of marketers, please go to 

the official website www.toptiergas.com.

Recommendation of the use of low 

emissions gasoline

Gasolines containing oxygenates such as 

ethers and ethanol, as well as reformulated 

gasolines, are available in some cities. 

These fuels are typically acceptable for use, 

providing they meet other fuel require-

ments.

Lexus recommends these fuels, since the 

formulations allow for reduced vehicle 

emissions.

Non-recommendation of the use of 

blended gasoline

Use only gasoline containing up to 15% 
ethanol. 
DO NOT use any flex-fuel or gasoline 
that could contain more than 15% etha-
nol, including from any pump labeled 
E30 (30% ethanol [

]), E50 (50% 

ethanol [

]), E85 (85% ethanol [

]) 

(which are only some examples of fuel 
containing more than 15% ethanol).

If you use gasohol in your vehicle, be sure 

that it has an octane rating no lower than 

87.

Lexus does not recommend the use of 

gasoline containing methanol.

Non-recommendation of the use of gas-

oline containing MMT

Some gasoline contains an octane enhanc-

ing additive called MMT (Methylcyclopen-

tadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gas-

oline that contains MMT. If fuel containing 

MMT is used, your emission control system 

may be adversely affected.
The malfunction indicator lamp on the 

instrument cluster may come on. If this hap-

pens, contact your Lexus dealer for service.

If your engine knocks

Consult your Lexus dealer.

You may occasionally notice light knock-

ing for a short time while accelerating or 

driving uphill. This is normal and there is 

no need for concern.

Fuel information

You must only use unleaded gaso-
line.

Select octane rating 87 (Research 
Octane Number 91) or higher. Use 
of unleaded gasoline with an octane 
rating lower than 87 may result in 
engine knocking. Persistent knock-
ing can lead to engine damage.

At minimum, the gasoline you use 
should meet the specifications of 
ASTM D4814 in the U.S.A.

A

B

C

407

8-1. Specifications

8

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 sp

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NOTICE

Notice on fuel quality

Do not use improper fuels. If improper 

fuels are used, the engine will be dam-

aged.

Do not use leaded gasoline. 

Leaded gasoline can cause damage to 

your vehicle’s three-way catalytic con-

verters causing the emission control 

system to malfunction.

Do not use gasohol other than the type 

previously stated. 

Other gasohol may cause fuel system 

damage or vehicle performance prob-

lems.

Using unleaded gasoline with an 

octane number or rating lower than 

the level previously stated may cause 

persistent heavy knocking. 

At worst, this may lead to engine dam-

age and will void the vehicle warranty.

Fuel-related poor driveability

If poor driveability (poor hot starting, 

vaporization, engine knocking, etc.) is 

encountered after using a different type 

of fuel, discontinue the use of that type of 

fuel.

When refueling with gasohol

Take care not to spill gasohol. It can 

damage your vehicle’s paint.

408

8-1. Specifications

Full-size tire

Tire size (

P.410)

DOT and Tire Identification Number (TIN) (

P.410)

Location of treadwear indicators (

P.327)

Tire ply composition and materials

Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies 
in a tire.

Radial tires or bias-ply tires

A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire.

TUBELESS or TUBE TYPE

A tubeless tire does not have a tube and air is directly put into the tire. A tube type tire has a 
tube inside the tire and the tube maintains the air pressure.

Load limit at maximum cold tire inflation pressure (

P.412)

Maximum cold tire inflation pressure (

P.412)

This means the pressure to which a tire may be inflated.

Uniform tire quality grading

For details, see “Uniform Tire Quality Grading” that follows.

Summer tires or all season tires (

P.328)

An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer tire.

Tire information

Typical tire symbols

A
B
C
D

E

F

G

H

I

J

409

8-1. Specifications

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Compact spare tire

Tire size (

P.410)

DOT and Tire Identification Number (TIN) (

P.410)

Location of treadwear indicators (

P.327)

Tire ply composition and materials

Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies 
in a tire.

Radial tires or bias-ply tires

A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire.

TUBELESS or TUBE TYPE

A tubeless tire does not have a tube and air is directly put into the tire. A tube type tire has a 
tube inside the tire and the tube maintains the air pressure.

Load limit at maximum cold tire inflation pressure (

P.412)

Maximum cold tire inflation pressure (

P.412)

This means the pressure to which a tire may be inflated.

“TEMPORARY USE ONLY”

A compact spare tire is identified by the phrase “TEMPORARY USE ONLY” molded on 
its sidewall. This tire is designed for temporary emergency use only.

A
B
C
D

E

F

G

H

I

410

8-1. Specifications

Type A

DOT symbol

*

Tire Identification Number (TIN)

Tire manufacturer’s identification 
mark

Tire size code

Manufacturer’s optional tire type 
code (3 or 4 letters)

Manufacturing week

Manufacturing year

*

: The  DOT  symbol  certifies that the tire 

conforms to applicable Federal Motor 
Vehicle Safety Standards.

Type B

DOT symbol

*

Tire Identification Number (TIN)

Tire manufacturer’s identification 
mark

Manufacturer’s code

Manufacturing week

Manufacturing year

*

: The DOT symbol certifies that the tire 

conforms to applicable Federal Motor 
Vehicle Safety Standards.

Typical tire size information

The illustration indicates typical tire 
size.

Tire use (P = Passenger car, T = 
Temporary use)

Section width (millimeters)

Aspect ratio (tire height to section 
width)

Tire construction code (R = Radial, 
D = Diagonal)

Wheel diameter (inches)

Load index (2 digits or 3 digits)

Speed symbol (alphabet with one 
letter)

Typical DOT and Tire Identifica-
tion Number (TIN)

A
B
C

D

E

F

G

A
B

Tire size

C

D

E
F

A

B
C

D

E
F

G

411

8-1. Specifications

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Tire dimensions

Section width

Tire height

Wheel diameter

Bead

Sidewall

Shoulder

Tread

Belt

Inner liner

Reinforcing rubber

Carcass

Rim lines

Bead wires

Chafer

This information has been prepared in 
accordance with regulations issued by 
the National Highway Traffic Safety 
Administration of the U.S. Department 
of Transportation.
It provides the purchasers and/or pro-
spective purchasers of Lexus vehicles 
with information on uniform tire quality 
grading.

Your Lexus dealer will help answer any 
questions you may have as you read this 
information.

DOT quality grades

All passenger vehicle tires must con-
form to Federal Safety Requirements 
in addition to these grades. Quality 
grades can be found where applicable 
on the tire sidewall between tread 
shoulder and maximum section width.

For example: Treadwear 200 Traction AA 
Temperature A

Treadwear

The treadwear grade is a comparative 
rating based on the wear rate of the 
tire when tested under controlled con-
ditions on a specified government test 
course.

For example, a tire graded 150 would 
wear one and a half (1 - 1/2) times as well 
on the government course as a tire graded 
100.
The relative performance of tires depends 
upon the actual conditions of their use. 
Performance may differ significantly from 
the norm due to variations in driving habits, 
service practices and differences in road 
characteristics and climate.

Tire section names

A
B
C

A
B
C
D

E
F

G

H

I

J

K

Uniform Tire Quality Grading

412

8-1. Specifications

Traction AA, A, B, C

The traction grades, from highest to 
lowest, are AA, A, B and C, and they 
represent the tire’s ability to stop on 
wet pavement as measured under con-
trolled conditions on specified govern-
ment test surfaces of asphalt and 
concrete.

A tire marked C may have poor traction 
performance.
Warning: The traction grade assigned to 
this tire is based on braking (straight 
ahead) traction tests and does not include 
cornering (turning) traction.

Temperature A, B, C

The temperature grades are A (the 
highest), B, and C, representing the 
tire’s resistance to the generation of 
heat and its ability to dissipate heat 

when tested under controlled condi-
tions on a specified indoor laboratory 
test wheel.

Sustained high temperature can cause the 
material of the tire to degenerate and 
reduce tire life, and excessive temperature 
can lead to sudden tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must 
meet under the Federal Motor Vehicle 
Safety Standard No. 109.
Grades B and A represent higher levels of 
performance on the laboratory test wheel 
than the minimum required by law.
Warning: The temperature grades of a tire 
assume that it is properly inflated and not 
overloaded.
Excessive speed, underinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and 
possible tire failure.

Glossary of tire terminology

Tire related term

Meaning

Cold tire inflation 
pressure

Tire pressure when the vehicle has been parked for three hours or 
more, or has not been driven more than 1 mile or 1.5 km under that 
condition

Maximum inflation 
pressure

The maximum cold inflated pressure to which a tire may be inflated, 
shown on the sidewall of the tire

Recommended 
inflation pressure

Cold tire inflation pressure recommended by a manufacturer

Accessory weight

The combined weight (in excess of those standard items which may 
be replaced) of hybrid transmission, power steering, power brakes, 
power windows, power seats, radio and heater, to the extent that 
these items are available as factory-installed equipment (whether 
installed or not)

Curb weight

The weight of a motor vehicle with standard equipment, including the 
maximum capacity of fuel, oil and coolant, and if so equipped, air 
conditioning and additional weight optional engine

413

8-1. Specifications

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Maximum loaded 
vehicle weight

The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight

Normal occupant 
weight

150 lb. (68 kg) times the number of occupants specified in the sec-
ond column of Table 1

*

 that follows

Occupant distribu-
tion

Distribution of occupants in a vehicle as specified in the third column 
of Table 1

*

 below

Production options 
weight

The combined weight of installed regular production options weigh-
ing over 5 lb. (2.3 kg) in excess of the standard items which they 
replace, not previously considered in curb weight or accessory 
weight, including heavy duty brakes, ride levelers, roof rack, heavy 
duty 12-volt battery, and special trim

Rim

A metal support for a tire or a tire and tube assembly upon which the 
tire beads are seated

Rim diameter 
(Wheel diameter)

Nominal diameter of the bead seat

Rim size designation Rim diameter and width

Rim type designa-
tion

The industry manufacturer’s designation for a rim by style or code

Rim width

Nominal distance between rim flanges

Vehicle capacity 
weight (Total load 
capacity)

The rated cargo and luggage load plus 150 lb. (68 kg) times the 
vehicle’s designated seating capacity

Vehicle maximum 
load on the tire

The load on an individual tire that is determined by distributing to 
each axle its share of the maximum loaded vehicle weight, and divid-
ing by two

Vehicle normal load 
on the tire

The load on an individual tire that is determined by distributing to 
each axle its share of curb weight, accessory weight, and normal 
occupant weight (distributed in accordance with Table 1

*

 below), 

and dividing by two

Weather side

The surface area of the rim not covered by the inflated tire

Tire related term

Meaning

414

8-1. Specifications

Bead

The part of the tire that is made of steel wires, wrapped or reinforced 
by ply cords and that is shaped to fit the rim

Bead separation

A breakdown of the bond between components in the bead

Bias ply tire

A pneumatic tire in which the ply cords that extend to the beads are 
laid at alternate angles substantially less than 90 degrees to the cen-
terline of the tread

Carcass

The tire structure, except tread and sidewall rubber which, when 
inflated, bears the load

Chunking

The breaking away of pieces of the tread or sidewall

Cord

The strands forming the plies in the tire

Cord separation

The parting of cords from adjacent rubber compounds

Cracking

Any parting within the tread, sidewall, or innerliner of the tire extend-
ing to cord material

CT

A pneumatic tire with an inverted flange tire and rim system in which 
the rim is designed with rim flanges pointed radially inward and the 
tire is designed to fit on the underside of the rim in a manner that 
encloses the rim flanges inside the air cavity of the tire

Extra load tire

A tire designed to operate at higher loads and at higher inflation 
pressures than the corresponding standard tire

Groove

The space between two adjacent tread ribs

Innerliner

The layer(s) forming the inside surface of a tubeless tire that contains 
the inflating medium within the tire

Innerliner separa-
tion

The parting of the innerliner from cord material in the carcass

Intended outboard 
sidewall

(a) The sidewall that contains a whitewall, bears white lettering, or 
bears manufacturer, brand, and/or model name molding that is 
higher or deeper than the same molding on the other sidewall of the 
tire, or
(b) The outward facing sidewall of an asymmetrical tire that has a 
particular side that must always face outward when mounted on a 
vehicle

Light truck (LT) tire

A tire designated by its manufacturer as primarily intended for use 
on lightweight trucks or multipurpose passenger vehicles

Load rating

The maximum load that a tire is rated to carry for a given inflation 
pressure

Tire related term

Meaning

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8-1. Specifications

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Maximum load rat-
ing

The load rating for a tire at the maximum permissible inflation pres-
sure for that tire

Maximum permissi-
ble inflation pres-
sure

The maximum cold inflation pressure to which a tire may be inflated

Measuring rim

The rim on which a tire is fitted for physical dimension requirements

Open splice

Any parting at any junction of tread, sidewall, or innerliner that 
extends to cord material

Outer diameter

The overall diameter of an inflated new tire

Overall width

The linear distance between the exteriors of the sidewalls of an 
inflated tire, including elevations due to labeling, decorations, or pro-
tective bands or ribs

Passenger car tire

A tire intended for use on passenger cars, multipurpose passenger 
vehicles, and trucks, that have a gross vehicle weight rating (GVWR) 
of 10,000 lb. or less.

Ply

A layer of rubber-coated parallel cords

Ply separation

A parting of rubber compound between adjacent plies

Pneumatic tire

A mechanical device made of rubber, chemicals, fabric and steel or 
other materials, that, when mounted on an automotive wheel, pro-
vides the traction and contains the gas or fluid that sustains the load

Radial ply tire

A pneumatic tire in which the ply cords that extend to the beads are 
laid at substantially 90 degrees to the centerline of the tread

Reinforced tire

A tire designed to operate at higher loads and at higher inflation 
pressures than the corresponding standard tire

Section width

The linear distance between the exteriors of the sidewalls of an 
inflated tire, excluding elevations due to labeling, decoration, or pro-
tective bands

Sidewall

That portion of a tire between the tread and bead

Sidewall separation

The parting of the rubber compound from the cord material in the 
sidewall

Tire related term

Meaning

416

8-1. Specifications

*

: Table  1 

 Occupant loading and distribution for vehicle normal load for various desig-

nated seating capacities

Snow tire

A tire that attains a traction index equal to or greater than 110, com-
pared to the ASTM E-1136 Standard Reference Test Tire, when 
using the snow traction test as described in ASTM F-1805-00, Stan-
dard Test Method for Single Wheel Driving Traction in a Straight 
Line on Snow-and Ice-Covered Surfaces, and which is marked with 

an Alpine Symbol (

) on at least one sidewall

Test rim

The rim on which a tire is fitted for testing, and may be any rim listed 
as appropriate for use with that tire

Tread

That portion of a tire that comes into contact with the road

Tread rib

A tread section running circumferentially around a tire

Tread separation

Pulling away of the tread from the tire carcass

Treadwear indica-
tors (TWI)

The projections within the principal grooves designed to give a visual 
indication of the degrees of wear of the tread

Wheel-holding fix-
ture

The fixture used to hold the wheel and tire assembly securely during 
testing

Designated seating capacity, 

Number of occupants

Vehicle normal load, Num-

ber of occupants

Occupant distribution in a 

normally loaded vehicle

2 through 4

2

2 in front

5 through 10

3

2 in front, 1 in second seat

11 through 15

5

2 in front, 1 in second seat, 1 in 

third seat, 1 in fourth seat

16 through 20

7

2 in front, 2 in second seat, 2 

in third seat, 1 in fourth seat

Tire related term

Meaning

 

 

 

 

 

 

 

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