Lexus RC F (2023 year). Manual in english

342

7-2. Steps to take in an emergency

Insert the mechanical key while
pulling on the driver’s door handle.

Unlocking the door.

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

■

Locking the door

Move the inside lock button to the
lock position.

Close the door.

■

Opening the trunk

Turn the mechanical key clockwise to
open. (



P.58)

■

Key linked functions

Locks both side door

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

Unlocks the door

Turning the key rearward unlocks the
driver’s door. Turning the key again unlocks
the other door.

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

: These settings must be customized at

your Lexus dealer.

343

7-2. Steps to take in an emergency

n t

ris

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

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

When the electronic key is detected, a

buzzer sounds and the engine switch will

turn to IGNITION ON mode.
When the smart access system with

push-button start is deactivated in custom-

ization setting, the engine switch will turn

to ACCESSORY mode.

Firmly depress the brake pedal and
check that

is shown on the

multi-information display.

Press the engine switch.

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

■

Stopping the engine

Shift the shift lever to P and press the engine

switch as you normally do when stopping

the engine.

■

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.293)

■

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 engine switch modes

Release the brake pedal and press the

engine switch in step

above.

The engine does not start and modes will be

changed each time the switch is pressed.

(



P.128)

WARNING

■

When using the mechanical key and

operating the power windows or

moon roof

Operate the power window or moon

roof after checking to make sure that

there is no possibility 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 engine

344

7-2. Steps to take in an emergency

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 by following the steps below.

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.

(

Open the hood. (

Remove the engine cover.
Raise the front of the engine cover
to remove the front clips, and then
raise the rear of the engine cover to
remove the rear clips.

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 connect the
clamp at the other end of the negative cable to  .
Use jumper cables that can reach the specified terminals and connecting point.

Positive (+) battery terminal (your vehicle)

If the vehicle battery is dis-
charged

The following procedures may be
used to start the engine if the vehi-
cle’s battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.

Restarting the engine

345

7-2. Steps to take in an emergency

When trouble

ari

ses

Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Metallic point shown in the illustration

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 battery of your vehi-
cle.

Open and close any of the door of
your vehicle with the engine switch
off.

Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to IGNITION ON
mode.

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

Once the engine starts, have the vehi-
cle inspected at your Lexus dealer as
soon as possible.

■

Starting the engine when the battery is

discharged

The engine cannot be started by push-start-

ing.

■

To prevent battery discharge

●

Turn off the headlights and the audio sys-

tem while the engine is off.

●

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.

■

Charging the battery

The electricity stored in the battery will dis-

charge gradually even when the vehicle is

not in use, due to natural discharge and the

draining effects of certain electrical appli-

ances. If the vehicle is left for a long time,

the battery may discharge, and the engine

may be unable to start. (The battery

recharges automatically during driving.)

■

When recharging or replacing the bat-

tery

●

In some cases, it may not be possible to

unlock the doors using the smart access

system with push-button start when the

battery is discharged. Use the wireless

remote control or the mechanical key to

lock or unlock the doors.

●

The engine may not start on the first

attempt after the battery has recharged

but will start normally after the second

attempt. This is not a malfunction.

●

The engine switch mode is memorized by

the vehicle. When the battery is recon-

nected, the system will return to the

mode it was in before the battery was dis-

charged. Before disconnecting the bat-

tery, turn the engine switch off.

If you are unsure what mode the engine

switch was in before the battery dis-

charged, be especially careful when

reconnecting the battery.

■

When replacing the battery

●

Use a battery that conforms to European

regulations.

●

Use a battery that tha case size is same as

the previous one (LN3), 20 hour rate

capacity (20HR) is equivalent (70Ah) or

greater, and performance rating (CCA)

is equivalent (592A) or greater.

• If the sizes differ, the battery cannot 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, battery may dis-

charge and the engine may not be able to

start.

●

For details, consult your Lexus dealer.

B
C
D

346

7-2. Steps to take in an emergency

WARNING

■

Avoiding battery fires or explosions

Observe the following precautions to

prevent accidentally igniting the flamma-

ble gas that may be emitted from the bat-

tery:

●

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

battery.

■

Battery precautions

The battery contains poisonous and cor-

rosive acidic electrolyte, while related

parts contain lead and lead compounds.

Observe the following precautions when

handling the battery:

●

When working with the 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 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 handling

the battery support, terminals, and

other battery-related parts.

●

Do not allow children near the battery.

NOTICE

■

When handling jumper cables

When connecting the jumper cables,

ensure that they do not become entan-

gled in the cooling fans 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.

347

7-2. Steps to take in an emergency

When trouble

ari

ses

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

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

After the engine has cooled down
sufficiently, inspect the hoses and

radiator core (radiator) for any
leaks.

Cooling fans
Radiator

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

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

Reservoir cap
“FULL”
“LOW”

Add coolant if necessary.

Water can be used in an emergency if

If your vehicle overheats

The following may indicate that
your vehicle is overheating.



The engine coolant temperature
gauge (



P.66) is in the red zone

or a loss of engine power is expe-
rienced. (For example, the vehicle
speed does not increase.)



“Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the
multi-information display.



Steam comes out from under the
hood.

Correction procedures

A
B

A
B
C

348

7-2. Steps to take in an emergency

coolant is unavailable.

Start the engine and turn the air
conditioning system on to check
that the radiator cooling fans oper-
ate and to check for coolant leaks
from the radiator or hoses.

The fans operate when the air conditioning

system is turned on immediately after a

cold start. Confirm that the fans are oper-

ating by checking the fan sound and air

flow. If it is difficult to check these, turn the

air conditioning system on and off repeat-

edly.

(The fans may not operate in freezing tem-

peratures.)

If the fans are not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the
nearest Lexus dealer.

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.

●

Keep hands and clothing (especially a

tie, a scarf or a muffler) away from the

fans and belts. Failure to do so may

cause the hands or clothing to be

caught, resulting in serious injury.

●

While the engine and radiator are hot,

do not loosen or remove the coolant

reservoircap.

High temperature steam or coolant

couldspray out.

NOTICE

■

When adding engine coolant

Add coolant slowly after the engine has

cooled down sufficiently. Adding cool

coolant to a hot engine too quickly can

cause damage to the engine.

■

To prevent damage to the cooling sys-

tem

Observe the following precautions:

●

Avoid contaminating the coolant with

foreign matter (such as sand or dust

etc.).

●

Do not use any coolant additive.

349

7-2. Steps to take in an emergency

n t

ris

Stop the engine. Set the parking
brake and shift the shift lever to P.

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

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

Restart the engine.

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.

If the vehicle becomes stuck

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

Recovering procedure

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 rear 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.

351

Vehi

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Vehicle specifications

8-1. Specifications

Maintenance data (fuel, oil level,

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

352

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

359

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

361

8-2. Customization

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

370

8-3. Items to initialize

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

380

352

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 stamped on the top left
of the instrument panel and in the
engine compartment.

This number is also on the Certification

Maintenance data (fuel, oil level, etc.)

Dimensions and weight

Overall length

185.4 in. (4710 mm)

Overall width

72.6 in. (1845 mm)

Overall height

54.7 in. (1390 mm)

Wheelbase

107.5 in. (2730 mm)

Tread

Front

61.2 in. (1555 mm)

Rear

61.4 in. (1560 mm)

Vehicle capacity weight (Occupants + luggage)

700 lb. (320 kg)

Seating capacity

4 (Front 2, Rear 2)

Vehicle identification

353

8-1. Specifications

Vehi

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spec

ifi

tions

Label.

■

Engine number

The engine number is located as
shown.

■

Oil capacity (Drain and refill [Reference

])

: The engine oil capacity is a reference quantity to be used when changing the engine oil.

Warm up and turn off the engine, wait more than 5 minutes, and check the oil level on the
dipstick.

■

Engine oil selection

“Toyota Genuine Motor Oil” is used in

Engine

Model

5.0 L 8-cylinder (2UR-GSE) engine

Type

8-cylinder V type, 4-cycle, gasoline

Bore and stroke

3.70



3.52 in. (94.0



89.5 mm)

Displacement

303.2 cu. in. (4969 cm

)

Drive belt tension

Automatic adjustment

Fuel

Fuel type

Unleaded gasoline only

Octane Rating

91 (Research Octane Number 96) or higher

Fuel tank capacity (Reference)

17.5 gal. (66.4 L, 14.6 Imp. gal.)

Lubrication system

With filter

9.3 qt. (8.8 L, 7.7 Imp. qt.)

Without filter

8.3 qt. (7.9 L, 7.0 Imp. qt.)

354

8-1. Specifications

your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil”
or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-6A multigrade
engine oil
Recommended viscosity: SAE 5W-30
SAE 5W-30 is the best choice for
good fuel economy and good starting
in cold weather.
If SAE 5W-30 is not available, SAE
10W-30 oil may be used. However, it
should be replaced with SAE 5W- 30
at the next oil change.

Outside temperature

Oil viscosity (5W-30 is explained here
as an example):
• The 5W in 5W-30 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 30 in 5W-30 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:
The International Lubricant Specifica-
tion Advisory Committee (ILSAC)
Certification Mark is added to some oil
containers to help you select the oil you
should use.

: The fluid capacity is a reference quantity.

Cooling system

Capacity

12.2 qt. (11.5 L, 10.1 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.

355

8-1. Specifications

icle

ific

atio

If replacement is necessary, contact your Lexus dealer.

■

Spark plug

: The fluid capacity is a reference quantity.

If replacement is necessary, contact your Lexus dealer.

Ignition system (spark plug)

Make

DENSO FK20HBR-J8

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 (battery)

Open voltage at 68°F (20°C):

12.3 V or higher
If the voltage is lower than the standard value,
charge the battery.
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)

Charging rates

5 A max.

Automatic transmission

Fluid capacity

11.8 qt. (11.2 L, 9.9 Imp. qt.)

Fluid type

Toyota Genuine ATF WS

NOTICE

■

Automatic transmission fluid type

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

tion, or damage the transmission of your vehicle.

356

8-1. Specifications

: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory.

Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equivalent oil of
matching quality to satisfy the above specification. Please contact your Lexus dealer for
further details.

: Minimum pedal clearance when depressed with a force of 112.4 lbf (500 N, 51.0 kgf)

while the engine is running.

Differential

Oil capacity

1.42 qt. (1.35 L, 1.19 Imp. qt.)

Oil type and viscosity

Toyota Genuine Differential Gear Oil LX 75W-85
GL-5 or equivalent

Brakes

Pedal clearance

4.0 in. (101 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)

Parking brake lining wear limit

0.04 in. (1.0 mm)

Fluid type

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

Steering

Free play

Less than 1.2 in. (30 mm)

357

8-1. Specifications

Vehi

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

Type A



Type B

Tires and wheels

Tire size

Front tires: 255/35ZR19 (92Y)
Rear tires: 275/35ZR19 (96Y)

Tire inflation pressure (Rec-
ommended cold tire inflation
pressure)

Driving under normal conditions

Front: 36 psi (250 kPa, 2.5 kgf/cm

or bar)

Rear: 36 psi (250 kPa, 2.5 kgf/cm

or bar)

Driving at high speeds (above 137 mph [220 km/h]) (in
countries where such speeds are permitted by law)

Add 8 psi (50 kPa, 0.5 kgf/cm

or bar) to the fronttires and

rear tires. Never exceed the maximum coldtire inflation
pressure indicated on the tire sidewall.

Wheel size

Front wheels: 19



Rear wheels: 19



10J

Wheel bolt torque

103 ft•lbf (140 N•m, 14.3 kgf•m)

Tire size

Front tires: 255/35ZR19 (92Y)
Rear tires: 275/35ZR19 (96Y)
Spare tire: 225/40ZR19 (93Y)

Tire inflation pressure (Rec-
ommended cold tire inflation
pressure)

Driving under normal conditions

Front: 36 psi (250 kPa, 2.5 kgf/cm

or bar)

Rear: 36 psi (250 kPa, 2.5 kgf/cm

or bar)

Spare: 42 psi (290 kPa, 2.9 kgf/cm

or bar)

Driving at high speeds (above 137 mph [220 km/h]) (in
countries where such speeds are permitted by law)

Add 8 psi (50 kPa, 0.5 kgf/cm

or bar) to the fronttires and

rear tires. Never exceed the maximum coldtire inflation
pressure indicated on the tire sidewall.

Wheel size

Front wheels: 19



Rear wheels: 19



10J

Spare wheels: 19



8 1/2J

Wheel bolt torque

103 ft•lbf (140 N•m, 14.3 kgf•m)

358

8-1. Specifications

A: Wedge base bulbs (amber)
B: Wedge base bulbs (clear)

Light bulbs

Bulb No.

Type

Exterior

Rear turn signal lights



Interior

Vanity lights



Footwell lights

194

3.8

Trunk light



359

8-1. Specifications

Vehi

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■

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 pro-

gram.

●

Lexus strongly recommends the use of

Top Tier Detergent Gasoline. For more

information on Top Tier Detergent Gaso-

line 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

91.

●

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

Fuel information

You must only use unleaded gaso-
line.

Select premium unleaded gasoline
with an octane rating of 91
(Research Octane Number 96) or
higher required for optimum
engine performance and fuel econ-
omy.
If the octane rating is less than 91,
damage to the engine may occur
and may void the vehicle warranty.

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

360

8-1. Specifications

driving uphill. This is normal and there is

no need for concern.

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.

■

When refueling with gasohol

Take care not to spill gasohol. It can dam-

age your vehicle’s paint.

■

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.

361

8-1. Specifications

Vehi

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Tire size (



P.362)

DOT and Tire Identification Number (TIN) (



P.362)

Location of treadwear indicators (



P.280)

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.364)

Maximum cold tire inflation pressure (



P.364)

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.281)

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

362

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
Manufacturing week
Manufacturing year
Manufacturer’s code

: 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

A
B

Tire size

E
F

B
C

E
F

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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 condi-
tions 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

Uniform Tire Quality Grading

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■

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 automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)

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Curb weight

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

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 second column of Table 1

that fol-

lows

Occupant distribution

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 produc-
tion options weighing over 5 lb. (2.3 kg) in excess of
the standard items which they replace, not previ-
ously considered in curb weight or accessory
weight, including heavy duty brakes, ride levelers,
roof rack, heavy duty battery, and special trim

Rim

A metal support for a tire or a tire and tube assem-
bly 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 designation

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 dividing by two

Tire related term

Meaning

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8-1. Specifications

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

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 substan-
tially less than 90 degrees to the centerline 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 com-
pounds

Cracking

Any parting within the tread, sidewall, or innerliner
of the tire extending to cord material

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

Tire related term

Meaning

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Innerliner separation

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 multipur-
pose passenger vehicles

Load rating

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

Maximum load rating

The load rating for a tire at the maximum permissi-
ble inflation pressure for that tire

Maximum permissible 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 dimen-
sion 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 protective bands or ribs

Passenger car tire

A tire intended for use on passenger cars, multipur-
pose 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

Tire related term

Meaning

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Pneumatic tire

A mechanical device made of rubber, chemicals,
fabric and steel or other materials, that, when
mounted on an automotive wheel, provides 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 protective 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

Snow tire

A tire that attains a traction index equal to or
greater than 110, compared to the ASTM E-1136
Standard Reference Test Tire, when using the snow
traction test as described in ASTM F-1805-00,
Standard Test Method for Single Wheel Driving
Traction in a Straight Line on Snow-and Ice-Cov-
ered 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

Tire related term

Meaning

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: Table 1 - Occupant loading and distribution for vehicle normal load for various desig-

nated seating capacities

Treadwear indicators (TWI)

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

Wheel-holding fixture

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

Tire related term

Meaning

Designated seating capac-

ity, Number of occupants

Vehicle normal load, Num-

ber of occupants

Occupant distribution in a

normally loaded vehicle

2 through 4

2 in front

5 through 10

2 in front, 1 in second seat

11 through 15

2 in front, 1 in second seat, 1 in

third seat, 1 in fourth seat

16 through 20

2 in front, 2 in second seat, 2

in third seat, 1 in fourth seat

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8-2.Customization

■

Changing by using the meter con-
trol switches

Press

to select

Operate the switches to select a
desired item.

Change the setting by referring to
the message displayed on the
screen.

■

Changing by using the Remote
Touch

Press the “MENU” button on the
Remote Touch.

Select “Setup” on the menu screen
and select “Vehicle”.

Select “Vehicle Customization”,
“LEXUS Park Assist” or “Drive
Mode Customization”.

This system can also be operated by the

touch screen.

Various setting can be changed. Refer
to the list of settings that can be
changed for details.
For details on the Remote Touch, refer
to the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S MAN-
UAL”.

■

When customizing using the Remote

Touch

Stop the vehicle in a safe place, apply the

parking brake, and shift the shift lever to P.

Also, to prevent battery discharge, leave

the engine running while customizing the

features.

Some function settings are changed simultaneously with other functions being cus-
tomized. Contact your Lexus dealer for further details.

Settings that can be changed using the Remote Touch
Settings that can be changed using the meter control switches

Customizable features

Your vehicle includes a variety of
electronic features that can be per-
sonalized to your preferences. The
settings of these features can be
changed by using the meter control
switches, the Remote Touch or at
your Lexus dealer.

Customizing vehicle features

WARNING

■

During customization

As the engine needs to be running

during customization, ensure that the

vehicle is parked in a place with ade-

quate ventilation. In a closed area such as

a garage, exhaust gases including harm-

ful carbon monoxide (CO) may collect

and enter the vehicle. This may lead to

death or a serious health hazard.

NOTICE

■

During customization

To prevent battery discharge, ensure that

the engine is running while customizing

features.

Customizable features

A
B

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Settings that can be changed by your Lexus dealer

Definition of symbols: O = Available, — = Not available

■

Gauges, meters and multi-information display (



P.62, 66, 73)

Function

Default setting

Customized setting

Language

English

French

O O

—

Spanish

Units

miles (MPG US)

km (km/L)

O O

—

km (L/100 km)

miles (MPG Impe-

rial)

Switch settings

Drive information 1

Desired status

screen

—

Drive information 1

Current fuel con-

sumption

Customizable items:



P.75

—

Average fuel econ-

omy (after reset)

Drive information 2

Distance (driving

range)

Average vehicle

speed (after reset)

Drive information 3

Average fuel con-

sumption (after

refuel)

Elapsed time (after

start)

Pop-up display

Off

—

Rev indicator

Setting 2

Setting 1

—

Setting 3

Off

Rev peak

Off

—

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8-2. Customization

: For details about each function:



P.80

: The default setting varies according to country.

: Some status screens cannot be registered (indicated on the multi-information display)

: Always observe the legal speed limit when driving on public roads.

: On multi-information display

■

Door lock (



P.90, 93, 342)

Gauge options

Normal

Custom

—

Eco drive

Sport

Speed indicator

Off

—

Speed indicator settings

75 mph (120 km/h)

30 mph to 100 mph

(50 km/h to 160

km/h)

—

Eco Driving Indicator Light

Off

—

Clock

12-hour display

24-hour display

—

Function

Default setting

Customized setting

Function

Default setting

Customized setting

Unlocking using a mechani-
cal key

Driver’s door

unlocked in one

step, both side doors

unlocked in two

steps

Both side doors

unlocked in one step

—

Automatic door lock

Shifting the shift

lever to position

other than P

Off

—

Vehicle speed is

approximately 12

mph (20 km/h) or

higher

Automatic door unlock

Shifting the shift

lever to P

Off

—

Driver’s door is

opened

Locking/unlocking of the
trunk when both side doors
are locked/unlocked

Off

—

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Smart access system with push-button start and wireless remote control
(



P.90, 93)

■

Smart access system with push-button start (



P.90, 93, 96)

■

Wireless remote control (



P.86, 90, 93)

Function

Default setting

Customized setting

Operation buzzer volume

Off

—

1 to 7

Operation signal (Emer-
gency flashers)

Off

—

Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being unlocked

60 seconds

Off

—

30 seconds

120 seconds

Open door warning buzzer

Off

—

Welcome light illumination
control

Off

—

Function

Default setting

Customized setting

Smart access system with
push-button start

Off

—

Smart door unlocking

Driver’s door

Both side doors

—

Number of consecutive door
lock operations

2 times

As many as desired

—

Function

Default setting

Customized setting

Wireless remote control

Off

—

Unlocking operation

Driver’s door

unlocked in one

step, both side doors

unlocked in two

steps

Both side doors

unlocked in one step

—

Lexus RC F (2023 year). Manual in english - page 11