passenger LEXUS RX350 2022 Repair Manual

4428-1. Specifications
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 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.
Tire size
A
B
C
D
E
F
G
A
Tire section names
Uniform Tire Quality Grading
B
C
A
B
C
D
E
F
G
H
I
J
K

4438-1. Specifications
8
Vehicle specifications
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 performa nce 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
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 temperatur e grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.

4468-1. Specifications
CrackingAny parting within the tread, sidewall, or innerliner
of the tire extendin g 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 operat e at higher loads and at
higher inflation pressures than the corresponding
standard tire
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the in side surface of a tubeless
tire that contains the inflating medium within the tire
Innerliner separationThe parting of the innerliner from cord material in
the carcass
Intended outboard sidewall
(a) The sidewall that contains a whitewall, bears
white lettering, or bear s 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 lightwe ight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissi-
ble inflation pressure for that tire
Maximum permissible inflation pres-
sureThe maximum cold inflation pressure to which a tire
may be inflated
Measuring rimThe rim on which a tire is fitted for physical dimen-
sion requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Tire related termMeaning

4478-1. Specifications
8
Vehicle specifications
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 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.
PlyA layer of rubber-c oated parallel cords
Ply separationA parting of rubber comp ound 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
Radial ply tire
A pneumatic tire in which the ply cords that extend
to the beads are laid at su bstantially 90 degrees to
the centerline of the tread
Reinforced tire
A tire designed to operat e 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, decorati on, 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 Referenc e Test Tire, when using the snow
traction test as described in ASTM F-1805-00,
Standard Test Method fo r 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
Tire related termMeaning

4598-2. Customization
8
Vehicle specifications
■PKSB (Parking Support Brake)* ( P.251)
*:If equipped
■Driving mode select switch ( P.262)
*:If equipped
■Front automatic air conditioning system ( P.284)
*:If equipped
■Seat heaters*/seat ventilators* ( P.297)
*:If equipped
FunctionDefault settingCustomized setting
PKSB (Parking Support Brake)
functionOnOff—O—
FunctionDefault settingCustomized setting
Powertrain control in custom-
ized mode
*NormalPowerO——Eco
Chassis control in customized
mode
*NormalSportO——
Air conditioning operation in
customized mode
*NormalEcoO——
FunctionDefault settingCustomized setting
A/C auto switch operationOnOffO—O
Exhaust gas sensor sensitivity*Standard-3 to 3O—O
FunctionDefault settingCustomized setting
Driver’s seat temperature pref-
erence in automatic modeStandard-2 (cooler) to 2
(warmer)O—O
Front passenger’s seat tem-
perature preference in auto-
matic mode
Standard-2 (cooler) to 2 (warmer)O—O
ABC
ABC
ABC
ABC

479What to do if... (Troubleshooting)
Is the engine switch in IGNITION
ON mode?
If you cannot release the shift lever by
depressing the brake pedal with the engine
switch in IGNITION ON mode ( P.175)
It is locked automatically to prevent
theft of the vehicle. ( P.171)
 Is the window lock switch pressed?
The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.142)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is not running) for
a period of time. ( P.173)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.396)
The parking brake indicator is on
Is the parking brake released? ( P.179)
Depending on the situation, other
types of warning buzzer may also
sound. (P.393, 402)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
(P.67)
Do one of the following to stop the
alarms:
 Unlock the doors.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine.
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.402)
When a warning light turns on or a
warning message is displayed, refer
to P.393, 402.
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire

481Alphabetical Index
Alphabetical Index
A
A/CAir conditioning filter ............................... 366
Front automatic air conditioning system......................................................................... 284
Front seat concentr ated airflow mode
(S-FLOW)................................................. 292
Rear automatic air conditioning system ......................................................................... 294
ABS (Anti-lock Brake System).............. 265 Warning light ...............................................395
ACA (Active Cornering Assist) ........... 266
Active Cornering Assist (ACA) ........... 266
Adaptive Front-lighting System (AFS) 186
Adaptive Variable Suspension System266
AFS (Adaptive Front- lighting System) 186
AHB (Automatic High Beam) .................187
Air conditioning filter ................................. 366
Air conditioning system Air conditioning filter ............................... 366
Front automatic air conditioning system......................................................................... 284
Front seat concentr ated airflow mode
(S-FLOW)................................................. 292
Rear automatic air conditioning system ......................................................................... 294
Airbags Airbag operating conditions................... 33
Airbag precautions for your child ........ 36
Correct driving posture ............................ 25
Curtain shield airbag operating condi- tions .................................................................. 33
Curtain shield airbag precautions ....... 36
Front passenger occupa nt classification
system ............................................................. 39
General airbag precautions ................... 36
Locations of airbags.................................... 30
Modification and disp osal of airbags . 38
Side airbag operating conditions ......... 33
Side airbag precautions ............................ 36 Side and curtain shie
ld airbags operating
conditions ...................................................... 33
Side and curtain shield airbags precau- tions .................................................................. 36
SRS airbags......................................................30
SRS warning light.......................................394
Alarm ....................................................................67 Warning buzzer .........................................393
Anchor brackets ..................................... 46, 57
Antennas (smart acc ess system with
push-button start)........................................ 113
Anti-lock Brake System (ABS).............. 265 Warning light .............................................. 395
Approach warning...................................... 228
Armrest............................................................ 322
Assist grips ..................................................... 322
Audio system-linked display ...................... 83
Automatic headlight leveling system ... 185
Automatic High Beam ................................187
Automatic light control system............... 184
Automatic transmission .............................. 174 M mode ............................................................ 177
Paddle shift switches ........................176, 177
Auxiliary boxes .................................... 308, 311
Average fuel economy................................. 80
Average vehicle speed ................................ 80
AWD Control....................................................81
B
Back door .......................................................... 101
Back-up light Wattage .......................................................... 437
Back-up lights Replacing light bulbs..................... 375, 381
Battery Battery checking ....................................... 355
If the battery is discharged .................... 423
Preparing and checking before winter............................................................................ 271
Warning light ...............................................394
Blind Spot Monitor (BSM)....................... 232
Bottle holders ................................................ 307

482Alphabetical Index
BrakeBrake hold.......................................................182
Fluid ......................................................354, 436
Parking brake ................................................ 179
Warning light ............................................... 393
Brake assist .................................................... 265
Break-in tips...................................................... 151
Brightness control Instrument panel light control ................ 78
BSM (Blind Spot Monitor)....................... 232
Buzzer Hands off steering wheel warning (LTA)...........................................................................218
C
Care Exterior ........................................................... 336
Interior ............................................................. 339
Seat belts........................................................ 339
Wheels and wheel ornaments............ 336
Cargo capacity.................................... 155, 158
Cargo hooks ................................................. 309
Cargo net hooks .......................................... 309
Center Display .............................................280
Chains ...............................................................272
Child restraint system Fixed with a LATCH system .................. 54
Fixed with a seat belt...................................50
Front passenger occupa nt classification
system ............................................................. 39
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 57
Child safety Airbag precautions...................................... 36
Battery precautions ......................356, 425
Child restraint system................................. 46
Heated steering wheel and seat heater precautions................................................ 297 How your child should
wear the seat belt
............................................................................. 27
Moon roof precautions.............................144
Panoramic moon roof precautions ....147
Power back door precautions ............... 101
Power window lock switch .....................142
Power window precautions .................... 141
Rear door child-protectors ................... 100
Seat belt extender prec autions.............. 27
Seat belt precautions .................................. 45
Child-protectors........................................... 100
Cleaning Exterior............................................................336
Interior .............................................................339
Radar sensor ................................................. 198
Seat belts ........................................................339
Wheels and wheel ornaments ............336
Clock ........................................................ 75, 323
Coat hooks..................................................... 323
Coin box.......................................................... 307
Compass ...........................................................331
Condenser ..................................................... 354
Console box .................................................. 305
Consumption screen .................................... 90
Cooling system............................................. 353 Engine overheating................................... 426
Cornering lights ............................................ 186 Replacing light bulbs................................375
Cruise control Dynamic radar cruise control with full-speed range ...................................... 222
Cup holders ................................................... 306
Current fuel consumption .......................... 80
Curtain shield airbags .................................. 30
Customizable features .............................. 449
D
Daytime running light system .................. 184
Defogger Outside rear view mirrors.................... 286
Rear window ............................................... 286
Windshield ................................................... 286

484Alphabetical Index
If the vehicle is submerged or water on the road is rising..................................... 385
If you have a flat tire ..................................406
If you lose your keys...................................419
If you think something is wrong ...........391
If your vehicle becomes stuck............. 428
If your vehicle has to be stopped in an
emergency ................................................384
If your vehicle needs to be towed ..... 387
If your vehicle overheats ........................ 426
Engine ACCESSORY mode ............................... 173
Compartment ...............................................351
Engine switch.................................................170
Fuel pump shut off system .................... 392
Hood................................................................ 349
How to start the engine ............................170
Identification number ................................. 431
If the engine will not start ........................ 418
If your vehicle has to be stopped in an
emergency ................................................384
Ignition switch (engine switch) .............170
Overheating................................................. 426
Tachometer ..................................................... 75
Engine coolant Capacity ......................................................... 434
Checking ....................................................... 353
Preparing and checking before winter........................................................................... 271
Engine coolant temperature gauge ........75
Engine immobilizer system ........................ 66
Engine oil Capacity ......................................................... 432
Checking .........................................................351
Preparing and checking before winter........................................................................... 271
Warning light ............................................... 394
Engine oil maintenance data .................. 353
Engine switch ..................................................170 Auto power off function ........................... 173
Changing the engine switch modes.. 173 If your vehicle has to be stopped in an
emergency ................................................ 384
EPS (Electric Power Steering) .............. 266 Warning light .............................................. 395
Event data recorder (EDR) ........................... 8
F
Flat tire Tire pressure warning system ............ 359
Vehicles with a spare tire...................... 406
Floor mats .......................................................... 24
Fluid Automatic transmission ..........................435
Brake ................................................................436
Washer .......................................................... 356
Fog lights Switch................................................................ 190
Footwell light .................................................300
Front automatic air conditioning system .......................................................................... 284
Front fog lights Replacing light bulbs................................375
Front passenger footwell hooks ............ 325
Front passenger occupant classification system .............................................................. 39
Front seats Adjustment ....................................................... 117
Cleaning .........................................................339
Correct driving posture ............................ 25
Driving position memory .........................129
Head restraints..............................................132
Memory recall function.............................. 131
Power easy access system .....................129
Seat heaters .................................................. 297
Seat position memory ...............................129
Seat ventilators ............................................ 297
Front side marker light Light switch .................................................... 184
Replacing light bulbs................................375
Front side marker lights Replacing light bulbs................................375
Wattage .......................................................... 437

485Alphabetical Index
Front turn signal lightsReplacing light bulbs.................... 375, 377
Turn signal lever ...........................................178
Wattage.......................................................... 437
Fuel Capacity ......................................................... 432
Fuel gauge ....................................................... 75
Fuel pump shut off system .................... 392
Information ....................................................438
Refueling ......................................................... 195
Type.................................................................. 432
Warning light ...............................................396
Fuel consumption Average fuel economy ..............................80
Current fuel consumption........................80
Fuel filler door If the fuel filler door cannot be opened......................................................................... 420
Refueling ......................................................... 195
Fuel gauge ..........................................................75
Fuel pump shut off system........................ 392
Fuses ................................................................... 371
G
Garage door opener ................................. 326
Gauges ................................................................75
G-force............................................................... 82
Glove box ....................................................... 305
Glove box light .............................................305
Grocery bag hooks .................................... 309
H
Hands Free Power Back Door ............... 104
Head restraints ...............................................132
Headlight aim ................................................ 372
Headlights Adaptive Front-lighting System (AFS).......................................................................... 186
Automatic High Beam system..............187
Light switch .................................................... 184
Replacing light bulbs................................ 375 Head-up display.............................................. 86
Driving information display area ...........86
Eco Driving Indicator..................................90
HUD (Head-up display) switch ............ 87
Navigation system-linked display ........89
Settings.............................................................. 88
Heated steering wheel .............................. 297
Heaters Front automatic air conditioning system..........................................................................284
Heated steering wheel ............................ 297
Outside rear view mirrors.................... 286
Rear automatic air conditioning system
.......................................................................... 294
Seat heaters .................................................. 297
High mounted stoplight Replacing light bulbs................................375
Hill-start assist control ............................... 266
Hood Open................................................................349
Hooks Cargo hooks............................................... 309
Cargo net hooks....................................... 309
Coat hooks ................................................... 323
Front passenger footwell hooks.........325
Grocery bag hooks................................. 309
Retaining hooks (floor mat) ..................... 24
Horn ....................................................................135
HUD (Head-up display) switch ................ 87
I
I/M test ............................................................ 346
Identification Engine................................................................431
Vehicle ..............................................................431
If your vehicle has to be stopped in an emergency .................................................. 384
Ignition switch (engine switch).................170 Auto power off function............................173
Changing the engine switch modes ..173
If your vehicle has to be stopped in an emergency ................................................ 384