
452
6-1. Specifications
RX400h_U
Tire related termMeaning
Occupant distributionDistribution 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 weighing 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 designationThe 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
Vehicle maximum load on
the tireThe 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 (dis-
tributed in accordance with Table 1
* below), and
dividing by two
We a t h e r s i d eThe surface area of the rim not covered by the
inflated tire

455
6-1. Specifications
6
Vehicle specifications
RX400h_U
Tire related termMeaning
Ply separationA parting of rubber compound between adjacent
plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fab-
ric 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 side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective 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, 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-Covered Surfaces,
and which is marked with an Alpine Symbol (
)
on at least one sidewall
Te s t r i mThe rim on which a tire is fitted for testing, and may be
any rim listed as appropriate for use with that tire

456
6-1. Specifications
RX400h_U
*:Table 1 Occupant loading and distribution for vehicle normal load for
various designated seating capacities
Tire related termMeaning
Tr e a dThat portion of a tire that comes into contact with the
road
Tr e a d r i bA tread section running circumferentially around a
tire
Tread separationPulling 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 fixtureThe fixture used to hold the wheel and tire assembly
securely during testing

461
6-2. Customization
6
Vehicle specifications
RX400h_U
Windshield
wipers and
washer
(
→P. 1 5 2 )
Switching operation when
the vehicle is stationaryONOFF
Illumination
(
→P. 2 6 0 )
Time elapsed before lights
turn off15 seconds7. 5 s e c o n d s
30 seconds
Front footwell lightingONOFF
Inside door handle well
lightingONOFF
Operation when the
doors are unlockedONOFF
Operation after the
hybrid system is offONOFF
Steering
wheel
(
→P. 66)
Automatic tilt-away steer-
ing columnONOFF
ItemFunctionDefault settingCustomizedsetting

470
RX400h_U
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
A/CAir Conditioning
ABSAnti-Lock Brake System
ACCAccessory
AFSAdaptive Front-lighting System
ALRAutomatic Locking Retractor
AW DAll-Wheel Drive
CRSChild Restraint System
DISPDisplay
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
GAWRGross Axle Weight Ratings
GVWRGross Vehicle Weight Ratings
I/MEmission inspection and Maintenance
INFOInformation
INTIntermittent
LEDLight Emitting Diode
LTLight Truck
MMTMethylcyclopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics
PWRPow e r
SRSSupplemental Restraint System

471
Abbreviation list
RX400h_U
TINTire Identification Number
TWITreadwear Indicators
TPMSTire Pressure Warning System
VDIMVehicle Dynamics Integrated Management
VINVehicle Identification Number
VSCVehicle Stability Control
2WD2-Wheel Drive
ABBREVIATIONSMEANING

472
RX400h_U
Alphabetical index
Alphabetical index
A/C ............................................................. 198
ABS.............................................................. 169
Adaptive front lighting system ......... 149
AFS .............................................................. 149
Air conditioning filter ..........................346
Air conditioning systemAir conditioning filter ....................... 346
Automatic air conditioning system ................................................... 198
Air bags
Air bag operating conditions ......... 93
Air bag precautions for your child.......................................................... 98
Air bag warning light .......................389
Curtain shield airbag operating conditions.............................................. 94
Curtain shield airbag precautions .......................................... 98
Front passenger occupant classification system....................... 103
General airbag precautions ........... 98
Locations of airbags.............................. 91
Modification and disposal of airbags ...................................................102
Proper driving posture .............89, 98
Side airbag operating conditions.............................................. 94
Side airbag precautions .................... 98
SRS airbags ............................................... 91
Alarm ............................................................85
Antenna ....................................................... 211
Anti-lock brake system ....................... 169
Armrest .....................................................282
Audio system
Antenna ......................................................211 Audio visual input................................ 251
A/V input adapter .............................. 251
CD player/changer ........................... 214
MP3/WMA disc............................... 220
Optimal use ......................................... 228
Radio ........................................................207
Steering wheel audio switch.......... 231
Audio visual input ...................................251
Automatic air conditioning system ..................................................... 198
Automatic headlight leveling system ..................................................... 150
Automatic light control system........ 148
A/V input adapter..................................251
Back door Back door ................................................. 44
Wireless remote control ...................36
Back-up lights Replacing light bulbs ....................... 365
Wattage ................................................... 441
Battery
Checking................................................327
If the 12-volt battery is discharged ......................................... 421
Preparing and checking
before winter...................................... 182
Brake
Fluid.......................................................... 325
Parking brake........................................ 137
Brake assist ...............................................169
Break-in tips..............................................123
Brightness control Multi-display light control .............. 276A
B

476
Alphabetical index
RX400h_U
Hybrid systemEnergy monitor...................................... 28
High voltage cautions .........................27
High voltage components ................27
Operating condition ........................... 28
Road accident cautions......................32
Starting procedure................................131
Hybrid vehicle immobilizer
system........................................................83
I/M test ..................................................... 309
Identification Engine ....................................................... 431
Vehicle ...................................................... 431
Ignition Keys ............................................................. 34
Ignition switch............................................131
Illuminated entry system ..................... 261
Indicator lights......................................... 140
Initialization Items to initialize ................................. 462
Inside door handle lights ....................260
Inside rear view mirror .......................... 67
Interior lights
Interior lights.........................................260
Switch ...................................................... 263
Wattage.................................................... 441
Jack Positioning a floor jack...................... 314
Replacing the wheel........................ 408
Jack handle ............................................. 408 Keyless entry ............................................. 36
Keys
Engine switch .......................................... 131
Flat key............................................. 34, 133
If you lose your keys ........................ 420
Ignition switch ......................................... 131
Key number.............................................. 34
Keyless entry............................................36
Keys.............................................................. 34
Wireless remote control key...........36
Laser cruise control.............................. 160
Licence plate lights Replacing light bulbs ....................... 365
Wattage ................................................... 441
Light bulbs
Replacing .............................................. 365
Wattage ................................................... 441
Lights Door courtesy lights ........................ 260
Engine switch light............................ 260
Fog light switch ...................................... 151
Headlights switch................................ 148
Inside door handle lights ............... 260
Interior light switch ............................263
Luggage compartment light ...........46
Meter ring light ................................... 260
Overhead courtesy light ............... 260
Personal light switch .........................264
Replacing light bulbs ....................... 365
Scuff lighting......................................... 260
Turn signal lever................................... 136
Vanity lights........................................... 273
Wattage ................................................... 441
Load capacity............................................ 181
Lock steering column ...........................132
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