LEXUS RX450h 2018 Owners Manual

7319-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85UProduction options weight The combined weight of in stalled regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride leve lers, 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 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 desi gnated seating capacity
Vehicle maximum load on
the tire The load on an individual tire that is determined by dis-
tributing 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 dis-
tributing to each axle its sh are 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 an d that is shaped to fit the
rimTire related term Meaning

732 9-1. Specifications
RX450h_RX450hL _U_OM48F85UBead 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 altern ate angles substantially 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 th e 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 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 insi de 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
carcassTire related term Meaning

7339-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85UIntended outboard sidewall (a)The sidewall that contai ns 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 sidewa ll of an asymmetrical tire
that has a particular side that must always face out-
ward when mounted on a vehicle
Light truck (LT) tire A tire designated by its manufacturer as primarily
intended for use on lightweig ht trucks or multipurpose
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 permissible
inflation pressure for that tire
Maximum permissible infla-
tion pressure The maximum cold inflation pr essure 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 inner-
liner 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 side-
walls of an inflated tire, including elev ations due to label-
ing, decorations, or protective 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-coat ed parallel cords
Ply separation A parting of rubber compou nd between adjacent pliesTire related term Meaning

734 9-1. Specifications
RX450h_RX450hL _U_OM48F85UPneumatic 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 substa ntially 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 side-
walls 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 Ref-
erence 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 Surf aces, 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 circ umferentially around a tireTire related term Meaning

7359-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85U* :Table 1 ⎯ Occupant loading and distribution fo r vehicle normal load for various des-
ignated seating capacitiesTread 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 testingTire 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 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

736
RX450h_RX450hL _U_OM48F85U9-2. Customization
When customizing vehicle features, ensure that the vehicle is parked in a safe
place with the shift lever in P and the parking brake set.■
Changing on the audio system screen 
Vehicles with a Lexus Display Audio system
Press the “MENU” button on the Lexus Display Audio controller.
Select “Setup” on the “Menu” screen and select “Vehicle”.
Various setting can be changed. Refer to the list of settings that can be
changed for details. 
Vehicles with a navigation system
Press the “MENU” button on the Remote Touch.
Select on the “Menu” screen and select .
Various setting can be changed. Refer to the list of settings that can be
changed for details. ■
Changing using the multi-information display
→ P. 108Customizable features Your vehicle includes a variety of elec tronic features that can be personalized
to suit your preferences. The settings of these features can be changed using
the multi-information display, on the audio system screen, or at your Lexus
dealer.
Customizing vehicle features 1
2
1
2

7379-2. Customization
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85USome function settings are changed simultaneously with other functions being
customized. Contact your Lexu s dealer for further details.
Settings that can be changed on the audio system screen
Settings that can be changed by your Lexus dealer
Definition of symbols: O = Available, – =Not available ■
Vehicle proximity no tification system ( → P. 75)
■
Gauges, meters and multi-information display ( → P. 96, 101)
* 1
: The default setting varies according to countries.
* 2
:Except F SPORT modelsCustomizable Features 1
2
Function Default setting Customized setting
The volume of vehicle proximity
notification system sound Level 1 Level 2
— O
Level 3 1 2
Function Default setting Customized setting
Language English French
O—
Spanish
Units
* 1
miles (MPG US) miles
(MPG Imperial)
O —
km (L/100 km)
km (km/L)
Color
* 2
Color 1 Color 2
O —
Suggestion function On Off — O 1 2

738 9-2. Customization
RX450h_RX450hL _U_OM48F85U■
Door lock ( → P. 136, 692) Function Default setting Customized setting
Unlocking using a mechanical
key Driver’s door
unlocked in one
step, all doors
unlocked in two
step All doors unlocked
in one step — O
Automatic door locking function Shift position
linked door locking
operation Off
O O
Speed linked door
locking operation
Automatic door unlocking func-
tion Shift position
linked door
unlocking opera-
tion Off
O ODriver’s door
linked door
unlocking opera-
tion 1 2

7399-2. Customization
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85U■
Power back door ( → P. 142)
* : If equipped Function Default setting Customized setting
Power back door switch opera-
tion Press for 1 second One short press — O
Automatic closing of the back
door when lowered On Off — O
Automatic opening of the back
door using the back door opener
switch On Off — O
Power back door opening posi-
tion 5 1 to 5 O O
Buzzer volume Level 3 Level 1
— O
Level 2
Power back door/touchless sen-
sor
* On Power back door:
On
Touchless sensor:
Off — O
Off
Power back door open/close
buzzer When the back
door begins to
operate: On
While the back
door is operating:
Off Off
— OWhen the back
door begins to
operate: Off
While the back
door is operating:
On
On
Touchless sensor
* sensitivity Level 2 (standard) Level 1 (lowest) to
level 3 (highest) — O 1 2

740 9-2. Customization
RX450h_RX450hL _U_OM48F85U■
Smart access system with push-button start and wireless remote control
( → P. 136, 158)
■
Smart access system with push-button start ( → P. 136, 158)Function Default setting Customized setting
Operation buzzer volume 5 Off
O O
1 to 7
Operation signal
(Emergency flashers) On Off O O
Time elapsed before automatic
door lock function is activated if
door is not opened after being
unlocked 60 seconds Off
— O30 seconds
120 seconds
Open door warning buzzer Off On — O
Reservation lock On Off — O 1 2
Function Default setting Customized setting
Smart access system with push-
button start On Off — O
The doors that are unlocked
using the smart access system
with push-button start can be
selected Driver’s door All the doors O O
Number of consecutive door
lock operations 2 times As many as desired — O 1 2