LEXUS RC 300 (2019 year). Instruction — part 21
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Full-size tire
Tire size (
P.331)
DOT and Tire Identification Number (TIN) (
P.330)
Location of treadwear indicators (
P.255)
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.333)
Maximum cold tire inflation pressure (
P.333)
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.256)
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
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Compact spare tire
Tire size (
P.331)
DOT and Tire Identification Number (TIN) (
P.330)
Location of treadwear indicators (
P.255)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies
in a 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.333)
Maximum cold tire inflation pressure (
P.333)
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.
Type A
A
B
C
D
E
F
G
H
Typical DOT and Tire Identifica-
tion Number (TIN)
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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)
■
Tire dimensions
Section width
Tire height
A
B
C
D
E
F
G
A
B
C
D
E
F
Tire size
A
B
C
D
E
F
G
A
B
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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.
■
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
Tire section names
Uniform Tire Quality Grading
C
A
B
C
D
E
F
G
H
I
J
K
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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)
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
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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 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
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
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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
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 separation
The parting of the innerliner from cord material in
the carcass
Tire related term
Meaning
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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
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
Tire related term
Meaning
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*
: Table 1 - Occupant loading and distribution for vehicle normal load for various desig-
nated seating capacities
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
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
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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
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
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8-2.Customization
■
Changing by using the meter con-
trol switches
1
Press
or
to select
.
2
Operate the switches to select a
desired item.
3
Change the setting by referring to
the message displayed on the
screen.
■
Changing by using the Remote
Touch
1
Press the “MENU” button on the
Remote Touch.
2
Select “Setup” on the menu screen
and select “Vehicle”.
3
Select “Vehicle Customization”,
“LEXUS Park Assist” or “Drive
Mode Customization”.
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
Settings that can be changed by your Lexus dealer
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
C
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Definition of symbols: O = Available, — = Not available
■
Gauges, meters and multi-information display (
P.62, 66, 71)
Function
*1
Default setting
Customized setting
Language
English
French
O
O
—
Spanish
Units
*2
miles (MPG US)
km (km/L)
O
O
—
km (L/100 km)
miles (MPG Impe-
rial)
Switch settings
*3
Drive information 1
Desired status
screen
*4
—
O
—
Drive information 1
Current fuel con-
sumption
Customizable items:
P.72
—
O
—
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
On
Off
—
O
—
Accent color
*3
Color 1
Color 2
O
O
—
Needle
*5
Color 1
Color 2
—
O
—
Color 3
A
B
C
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*1
: For details about each function:
P.76
*2
: The default setting varies according to country.
*3
: Except F SPORT models
*4
: Some status screens cannot be registered (indicated on the multi-information display)
*5
: F SPORT models
*6
: Always observe the legal speed limit when driving on public roads.
*7
: On multi-information display
■
Door lock (
P.86, 89, 304)
Rev indicator
*5
5000 r/min.
Select to set the
desired engine
speed at which the
Rev indicator will
begin to be dis-
played.
—
O
—
Off
Rev peak
*5
On
Off
—
O
—
Speed indicator
*5
Off
On
—
O
—
Speed indicator settings
*5
75 mph (120 km/h)
30 mph to 100 mph
(50 km/h to
160km/h)
*6
—
O
—
Eco Driving Indicator Light
On
Off
—
O
—
Clock
*7
12-hour display
24-hour display
—
O
—
Function
*1
Default setting
Customized setting
A
B
C
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
—
—
O
Automatic door lock
Shifting the shift
lever to position
other than P
Off
O
—
O
Vehicle speed is
approximately 12
mph (20 km/h) or
higher
A
B
C
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Smart access system with push-button start and wireless remote control
(
P.86, 89)
■
Smart access system with push-button start (
P.86, 89, 93)
Automatic door unlock
Shifting the shift
lever to P
Off
O
—
O
Driver’s door is
opened
Locking/unlocking of the
trunk when both side doors
are locked/unlocked
On
Off
—
—
O
Function
Default setting
Customized setting
A
B
C
Function
Default setting
Customized setting
Operation buzzer volume
5
Off
O
—
O
1 to 7
Operation signal (Emer-
gency flashers)
On
Off
O
—
O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being unlocked
60 seconds
Off
O
—
O
30 seconds
120 seconds
Open door warning buzzer
On
Off
—
—
O
Welcome light illumination
control
On
Off
O
—
O
A
B
C
Function
Default setting
Customized setting
Smart access system with
push-button start
On
Off
—
—
O
Smart door unlocking
Driver’s door
Both side doors
O
—
O
Number of consecutive door
lock operations
2 times
As many as desired
—
—
O
A
B
C
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Wireless remote control (
P.82, 86, 89)
■
Driving position memory
*
(
P.100)
*
: If equipped
■
Power easy access system (
P.100)
*
: If equipped
Function
Default setting
Customized setting
Wireless remote control
On
Off
—
—
O
Unlocking operation
Driver’s door
unlocked in one
step, both side doors
unlocked in two
steps
Both side doors
unlocked in one step
O
—
O
Trunk unlocking operation
Press and hold
(short)
One short press
—
—
O
Push twice
Press and hold
(long)
Off
Alarm (panic mode)
On
Off
—
—
O
A
B
C
Function
Default setting
Customized setting
Selecting the door linking
driving position memory with
door unlock operation
Driver’s door
Both side doors
—
—
O
A
B
C
Function
Default setting
Customized setting
Driver’s seat movement when
exiting the vehicle
Full
Off
O
—
O
Partial
Steering wheel movement
*
On
Off
—
—
O
A
B
C
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■
Power windows (
P.110)
■
Moon roof
*
(
P.112)
*
: If equipped
■
Turn signal lever (
P.133)
*1
: After flashing the turn signal lights when turning left or right while this function is off and
the turn signal lever is moved to the first position in the direction of the flashing light, the
turn signal lights can be selected to be flashing or off.
*2
: The turn signal lights keep flashing if the turn signal lever is moved to the first position in
the direction of flashing light.
*3
: The turn signal lights will be off if the turn signal lever is moved to the first position in the
direction of flashing light.
Function
Default setting
Customized setting
Mechanical key linked opera-
tion
Off
On
—
—
O
Wireless remote control
linked operation
Off
On (Open only)
—
—
O
Wireless remote control
linked operation signal
(buzzer)
On
Off
—
—
O
A
B
C
Function
Default setting
Customized setting
Mechanical key linked opera-
tion
Off
On
—
—
O
Wireless remote control
linked operation
Off
On (Open only)
—
—
O
Wireless remote control
linked operation signal
(buzzer)
On
Off
—
—
O
A
B
C
Function
Default setting
Customized setting
The number of times the turn
signal lights flash automati-
cally when the turn signal
lever is moved to the first
position during a lane
change
*1
3
5
—
—
O
7
Off
*2
Off
*3
A
B
C
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