
2114-5. Using the driving support systems
4
Driving
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the fol-
lowing conditions are met.
• LKA is turned on.
• Vehicle speed is approximately 32 mph  (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane  is approximately 9.8 
ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or 
around a gentle curve with a radius of 
more than approximately 492 ft. (150 m).
• No system malfunctions are detected.  ( P.213)
●Steering assist function
This function operates when all of the fol-
lowing conditions are me t in addition to the 
operation conditions for the lane departure 
alert function.
•Setting for “Steering Assist” in   of the  multi-information display is set to “On”. 
( P.86)
• Vehicle is not accelerated or decelerated  by a certain amount or more.
• Steering wheel is not operated with a 
steering force level su itable for changing 
lanes.
• ABS, VSC, TRAC and PCS are not oper-
ating.
• TRAC or VSC is not turned off.
●Vehicle sway warning function
This function operates when all of the fol-
lowing conditions are met.
• Setting for “Sway Warning” in   of the  multi-information display is set to “On”. 
( P.86)
• Vehicle speed is approximately 32 mph  (50 km/h) or more.
• Width of traffic lane  is approximately 9.8 
ft. (3 m) or more.
• No system malfunctions are detected.  ( P.213)
●Lane centering function
This function operates when all of the fol-
lowing conditions are met. • LKA is turned on.
• Setting for “Steering Assist” and “Lane 
Center” in   of the multi-information 
display are set to “On”. ( P.86)
• System recognizes white (yellow) lines.
• Dynamic radar cruise control with full- speed range is operating.
• Width of traffic lane is approximately 8.2  to 13.5 ft. (2.5 to 4.1 m).
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or 
around a gentle curve with a radius of 
more than approximately 656 ft. (200 
m).
• No system malfunctions are detected.  ( P.213)
• Vehicle does not ac celerate or deceler-
ate by a certain amount or more.
• Steering wheel is not operated with a  steering force level su itable for changing 
lanes.
• ABS, VSC, TRAC and PCS are not oper- ating.
• TRAC or VSC is not turned off.
• Steering assist function is not operating.
■Temporary cancellation of functions
When the operation conditions are no lon-
ger met, a function may be temporarily can-
celed. However, when the operation 
conditions are met agai n, operation of the 
function is automatically restored. ( P.211)
■Steering assist function/lane centering 
function
Depending on the vehicle speed, lane 
departure situation, road conditions, etc., 
the driver may not feel the function is oper-
ating or the function may not operate at all.
■Lane departure alert function
The warning buzzer may be difficult to hear 
due to external noise, audio playback, etc.
■Hands off steering wheel warning
When the system determines that the driver 
has removed their hands from the steering 
wheel while the steering  assist function or 
lane centering function  is operating, a warn-
ing message urging the driver to hold the 
steering wheel and the  symbol shown in the 
illustration are displayed on the multi-infor-
mation display. 

2304-5. Using the driving support systems
*1: The illustrations show the graphics on the Multi-information display, and differ 
from the graphics on the head-up dis-
play and Center Display. Depending on 
the distance of the obstacle, the sensor 
display on the Center Display illumi-
nates or blinks in various cycles, 
although the width of it does not 
change.
*2: Multi-information display and head-up display
*3:Center Display
■Buzzer operation and distance to 
an obstacle
A buzzer sounds when the sensors are 
operating.
 The buzzer beeps faster as the vehi-
cle approaches an obstacle. When 
the vehicle comes within the follow-
ing distance of the obstacle, the 
buzzer sounds continuously:
• Front center sensors: Approximately 1.0 
ft. (30 cm)
• Corner sensors: Approximately 1.0 ft.  (30 cm)
• Rear center sensors: Approximately 1.1 ft.  (35 cm)
 When 2 or more obstacles are 
detected simultaneously, the buzzer 
system responds to the nearest 
obstacle. If one or both come within 
the above distances, the beep will 
repeat a long tone, followed by fast 
beeps.
(continuous*2 or 
blinking rap-
idly
*3)
Front center sensor: 1.3 
ft. (40 cm) to 1.0 ft. (30 
cm)
Rear center sensor: 1.5 
ft. (45 cm) to 1.1 ft. (35 
cm)
Front and rear corner 
sensor: 1.5 ft. (45 cm) to 
1.0 ft. (30 cm)
(blinking*2 or 
continuous
*3)
Front center sensor: 
Less than 1.0 ft. (30 cm)
Rear center sensor: 
Less than 1.1 ft. (35 cm)
Front and rear corner 
sensor: Less than 1.0 ft. 
(30 cm)
Display*1Approximate distance  to obstacle 

3276-3. Do-it-yourself maintenance
6
Maintenance and care
When replacing wheels, care should 
be taken to ensure that they are equiv-
alent to those removed in load capac-
ity, diameter, rim width and inset
*.
Replacement wheels are available at 
your Lexus dealer.
*: Conventionally referred to as offset.
Lexus does not recommend using the 
following:
 Wheels of different sizes or types
 Used wheels
 Bent wheels that have been straight-
ened
■When replacing wheels
The wheels of your vehicle are equipped 
with tire pressure wa rning valves and trans-
mitters that allow the tire pressure warning 
system to provide advance warning in the 
event of a loss in tire inflation pressure. 
Whenever wheels are replaced, tire pres-
sure warning valves an d transmitters must 
be installed. ( P.317)
NOTICE
■When inspecting and adjusting tire 
inflation pressure
Be sure to put the tire valve caps back on.
If a valve cap is not installed, dirt or mois-
ture may get into the valve and cause an 
air leak, resulting in decreased tire infla-
tion pressure.
Wheels
If a wheel is bent, cracked or heavily 
corroded, it should be replaced. 
Otherwise, the tire may separate 
from the wheel or cause a loss of 
handling control.
Wheel selection
WARNING
■When replacing wheels
●Do not use wheels that are a different 
size from those recommended in the 
Owner’s Manual, as this may result in a 
loss of handling control. 

3868-1. 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. This number is also stamped under the 
right-hand front seat.
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
Overall length187.4 in. (4760 mm)
Overall width75.6 in. (1920 mm)
Overall height*53.0 in. (1345 mm)
Wheelbase113.0 in. (2870 mm)
Tread*Front64.2 in. (1630 mm)
Rear64.4 in. (1635 mm)
Vehicle capacity weight 
(Occupants + luggage)720 lb. (325 kg)
Seating capacity
Seating capacity4 (Front 2, Rear 2)
Vehicle identification 

3998-1. Specifications
8
Vehicle specifications
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)
Run-flat tire code
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol (alphabet with one 
letter)
■Tire dimensionsSection 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
Tire section names
A
B
C
D
E
F
G
H
A
B
C
Uniform Tire Quality Grading
A
B
C
D
E
F
G
H
I
J
K 

4018-1. Specifications
8
Vehicle specifications
Accessory weight
The combined weight (in excess of those standard items which may 
be replaced) of automatic transmission 
steering, power brakes, power wi ndows, power seats, radio and 
heater, to the extent that these item s 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
Maximum loaded 
vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant 
weight150 lb. (68 kg) times the number of  occupants specified in the sec-
ond column of Table 1
* that follows
Occupant distribu-
tionDistribution of occupants in a vehicl e 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
RimA 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 designationRim diameter and width
Rim type designa-
tionThe industry manufacturer’s designation for a rim by style or code
Rim widthNominal 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
Tire related termMeaning 

4038-1. Specifications
8
Vehicle specifications
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) tireA tire designated by its manufactur er as primarily intended for use 
on lightweight trucks or mu ltipurpose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a given inflation 
pressure
Maximum load rat-
ingThe 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 rimThe rim on which a tire is fitted for physical dimension requirements
Open spliceAny parting at any junction of tread, sidewall, or innerliner that 
extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the sidewalls of an 
inflated tire, including elevations du e 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 gr oss vehicle weight rating (GVWR) 
of 10,000 lb. or less.
PlyA layer of rubber-c oated parallel cords
Ply separationA 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 tireA pneumatic tire in which the ply cords that extend to the beads are 
laid at substantially 90 degree s to the centerline of the tread
Reinforced tireA tire designed to operate at high er loads and at higher inflation 
pressures than the corre sponding standard tire
Tire related termMeaning 

4048-1. Specifications
*:Table 1  Occupant loading and distribution for  vehicle normal load for various desig-
nated seating capacities
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
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe 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, com-
pared 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-Covered Surfaces,  and which is marked with an 
Alpine Symbol ( ) on at least one sidewall
Test rimThe rim on which a tire is fitted fo r testing, and may be any rim listed 
as appropriate for use with that tire
TreadThat portion of a tire that comes into contact with the road
Tread ribA tread section running circumferentially around a tire
Tread separationPulling away of the tread from the tire carcass
Treadwear indica-
tors (TWI)The projections within th e principal grooves designed to give a visual 
indication of the degree s of wear of the tread
Wheel-holding fix-
tureThe fixture used to hold the wheel and tire assembly securely during 
testing
Designated seating capacity, 
Number of occupantsVehicle normal load, Num- ber of occupantsOccupant distribution in a normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
11 through 1552 in front, 1 in  second seat, 1 in 
third seat, 1 in fourth seat
16 through 2072 in front, 2 in second seat, 2  in third seat, 1 in fourth seat
Tire related termMeaning