371 LEXUS RX350 2021 Owners Manual

371-1. For safe use
1
For safety and security
WARNING
●The SRS front passenger airbag also
deploys with considerable force, and
can cause death or serious injury
especially if the front passenger is very
close to the airbag. The front passen-
ger seat should be as far from the air-
bag as possible with the seatback
adjusted, so the front passenger sits
upright.
●Improperly seated and/or restrained
infants and children can be killed or
seriously injured by a deploying airbag.
An infant or child who is too small to
use a seat belt should be properly
secured using a child restraint system.
Lexus strongly recommends that all
infants and children be placed in the
rear seats of the vehicle and properly
restrained. The rear seats are safer for
infants and children than the front pas-
senger seat. (
P.45)
●Do not sit on the edge of the seat or
lean against the dashboard.
●Do not allow a child to stand in front of
the SRS front passenger airbag unit or
sit on the knees of a front passenger.
●Do not allow the front seat occupants
to hold items on their knees.
●Do not lean against the door, the roof
side rail or the front, side and rear pil-
lars.
●Do not allow anyone to kneel on the
passenger seats toward the door or
put their head or hands outside the
vehicle.
●Do not attach anything to or lean any-
thing against areas such as the dash-
board, steering wheel pad and lower
portion of the instrument panel.
These items can become projectiles
when the SRS driver, front passenger
and knee airbags deploy.

3716-3. Do-it-yourself maintenance
6
Maintenance and care
■The tire pressure warning system
must be initialized in the following
circumstances:
 When the tire inflation pressure is
changed such as when changing
traveling speed.
 When the tire inflation pressure is
changed such as when the tire size
is changed.
 When rotating the tires.
When the tire pressure warning system
is initialized, the cu rrent tire inflation
pressure is set as the benchmark pres-
sure.
■How to initialize the tire pressure
warning system
1 Park the vehicle in a safe place and
turn the engine switch off.
Initialization cannot be performed while
the vehicle is moving.
2 Adjust the tire inflation pressure to
the specified cold tire inflation pres-
sure level.
Make sure to adjust th e tire pressure to the
specified cold tire infl ation pressure level. The tire pressure warning system will oper-
ate based on this pressure level.
3
Turn the engine switch to IGNI-
TION ON mode.
4 Select on the multi-information
display.
5 Press or of the meter con-
trol switch, select the “Vehicle Set-
tings” screen and then press the
.
6 Press or of the meter con-
trol switch, select the “TPMS”
screen and then press and hold the
until the tire pressure warn-
ing light blinks slowly 3 times.
“- -” will be displayed for inflation pressure
of each tire on the multi-information dis-
play while the tire pr essure warning system
determines the position of each tire.
7 Drive the vehicle at approximately
25 mph (40 km/h) or more for
approximately 10 to 30 minutes
until the inflation pressure of each
tire is displayed on the multi-infor-
mation display.
When position of each tire is determined,
the inflation pressure of each tire will be
displayed on the multi-information display.
If tire inflation pressure becomes low
before the inflation pressure is displayed,
the tire pressure warning light will come
NOTICE
■To avoid damage to the tire pressure
warning valves and transmitters
When a tire is repaired with liquid seal-
ants, the tire pressu re warning valve and
transmitter may not operate properly. If a
liquid sealant is used , contact your Lexus
dealer or other qualified service shop as
soon as possible. Make sure to replace
the tire pressure warning valve and trans-
mitter when replacing the tire. ( P.370)
Initializing the tire pressure
warning system

4107-2. Steps to take in an emergency
The light will go off after several driving
trips.
If the light does not go off even after several
trips, contact your Lexus dealer as soon as
possible.
■Electric power steering system warning
light (warning buzzer)
When the battery charge becomes insuffi-
cient or the voltage temporarily drops, the
electric power steeri ng system warning
light may come on and the warning buzzer
may sound.
■When the tire pressure warning light
comes on
Inspect the tires to check if a tire is punc-
tured.
If a tire is punctured: P.416
If none of the tires are punctured:
Turn the engine switch off then turn it to
IGNITION ON mode. Check if the tire
pressure warning light comes on or blinks.
If the tire pressure wa rning light blinks for
1 minute then stays on
There may be a malfunction in the tire
pressure warning syst em. Have the vehicle
inspected by your Lexus dealer immedi-
ately.
If the tire pressure warning light comes
on
1 After the temperature of the tires has
lowered sufficiently, check the inflation
pressure of each tire and adjust them to
the specified level.
2 If the warning light does not turn off
even after several minutes have
elapsed, check that the inflation pres-
sure of each tire is at the specified level
and perform initialization. ( P.371)
If the warning light does not turn off several
minutes after the initia lization has been per-
formed, have the vehicle inspected by your
Lexus dealer immediately.
■The tire pressure warning light may
come on due to natural causes
The tire pressure wa rning light may come
on due to natural causes such as natural air
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-ing the tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with
a tire pressure warning valve and transmit-
ter. If a tire goes flat , the tire pressure warn-
ing light will not turn off even though the flat
tire has been replaced with the spare tire.
Replace the spare tire with the repaired tire
and adjust the tire inflation pressure. The
tire pressure warning light will go off after a
few minutes.
■Conditions that the tire pressure warn-
ing system may not function properly
 P.368
■Customization
Some functions can be customized.
(  P.461)
WARNING
■If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer.
The vehicle will become extremely
unstable during br aking, and the ABS
system may fail, which could cause an
accident resulting in death or serious
injury.
■When the electric power steering
system warning light comes on
When the light comes on yellow, the
assist to the power st eering is restricted.
When the light comes on red, the assist
to the power steering is lost and handling
operations of the steering wheel become
extremely heavy.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more
force than usual.

4748-3. Initialization
8-3.Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the battery being reconnected, or maintenance being performed on
the vehicle:
List of items to initialize
ItemWhen to initializeReference
Message indicating
maintenance is
required (U.S.A. only)
• After the maintenance is performedP.350
Tire pressure warning
system
• When changing the tire inflation pres- sure by changing traveling speed
• When changing the tire size
• When rotating the tires
P.371
Oil maintenance• After the maintenance is performedP.361
PKSB (Parking Support
Brake)
*• After reconnecting or changing the batteryP.260
Power back door• After reconnecting or changing the batteryP.109

498Alphabetical Index
Indicators ............................................................74
InitializationItems to initialize ......................................... 474
Maintenance ..................................... 350, 361
Power windows............................................ 144
Tire pressure warning system ............... 371
Inside rear view mirror ............................... 140
Instrument panel light control ................... 80
Intercooler coolant Capacity ......................................................... 446
Interior lights.................................................. 309 Front interior light ......................................309
Rear interior light .......................................309
Intuitive parking assist..................... 242, 244 Function .......................................................... 244
Warning message..................................... 246
J
JackPositioning a floor jack............................ 357
Vehicle-equipped jack ............................. 417
Jack handle ...................................................... 417
Jam protection function Electronic sunshade .................................. 150
Moon roof ....................................................... 147
Panoramic moon roof.............................. 150
Power back door........................................ 109
Power windows............................................ 144
Rear seats ........................................................ 122
K
Keyless entrySmart access system with push-button start ................................................................... 115
Wireless remote control........................... 97
Keys Battery-saving function ............................. 116
Electronic key ................................................. 96
Engine switch................................................. 174
If the electronic key does not operate properly......................................................... 431 If you lose your keys ................................ 430
Key number plate .........................................96
Keyless entry .......................................... 97, 115
Mechanical key .............................................. 96
Replacing the battery ............................... 379
Warning buzzer ............................................ 115
Wireless remote control ........................... 97
Knee airbags .................................................... 30
L
Lane Tracing Assist (LTA) Operation ........................................................216
Warning messages................................... 224
Language (multi-information display) ... 85
LATCH anchors ............................................. 54
Lever Auxiliary catch lever .................................357
Hood lock release lever .........................357
Shift lever ......................................................... 178
Turn signal lever .......................................... 182
Wiper lever .................................................... 194
Lexus climate concierge ............................291
Lexus Enform Safety Connect.................. 60
Lexus Safety System + 2.0 AHB (Automatic High Beam) ............... 191
Dynamic radar cruise control with full-speed range ...................................... 227
LTA (Lane Tracing Assist) ......................216
PCS (Pre-Collision System) ............... 209
RSA (Road Sign Assist).......................... 225
License plate lights Light switch ....................................................188
Replacing light bulbs ............................... 385
Light bulbs Replacing ...................................................... 384
Lights Automatic High Beam system ............... 191
Fog light switch ............................................ 194
Front interior lights ................................... 309
Front personal lights.................................. 310
Headlight switch..........................................188
Interior lights ................................................ 309

503Alphabetical Index
Rear window and outside rear view mir-ror defoggers switch ............................ 292
Seat heater switches ................................306
Seat ventilator switches ..........................306
“SOS” button .................................................. 60
Tilt and telescopic steering control switch ...........................................................................139
Tire pressure warning reset switch .... 371
Vehicle-to-vehicle distance switch ...227
VSC OFF switch ....................................... 276
Window lock switch ..................................146
Windshield wiper and washer switch194
Windshield wiper de-icer switch ...... 297
T
Tachometer........................................................ 77 Rev indicator ................................................... 78
Rev peak ........................................................... 79
Tail lights Light switch .................................................... 188
Replacing light bulbs............................... 385
The Secondary Collision Brake ............ 275
Theft deterrent system Alarm .................................................................. 68
Engine immobilizer system ..................... 66
Tire inflation pressure Maintenance data......................................448
Tire inflation pressu re display function
......................................................................... 367
Warning light ............................................... 407
Tire information ............................................ 452 Glossary.........................................................456
Size.................................................................... 454
Tire identification number ..................... 453
Uniform Tire Quality Grading............ 454
Tire pressure display .................................. 367
Tire pressure warning system Function .......................................................... 367
Initializing ......................................................... 371
Installing tire pressure warning valves and transmitters ...................................... 370
Registering ID codes ............................... 372 Warning light ...............................................407
Tires Chains .............................................................. 281
Checking ...................................................... 365
If you have a flat tire ................................... 416
Inflation pressure ........................................ 373
Information ....................................................452
Replacing ........................................................ 416
Rotating tires ................................................ 367
Size ................................................................... 448
Snow tires ..................................................... 280
Spare tire ......................................................... 416
Tire inflation pressure display function.......................................................................... 367
Tire pressure warning system ............. 367
Warning light ...............................................407
Tools.................................................................... 417
Top tether strap............................................... 57
Total load capacity ...................................... 442
Towing Dinghy towing ...............................................173
Emergency towing.................................... 397
Towing eyelet.............................................. 399
Trailer towing ................................................ 163
TRAC (Traction Control) ........................ 275
Traction Control (TRAC) ........................ 275
Trailer Sway Control.................................. 275
Trailer towing ..................................................163
Transmission Automatic transmission ........................... 178
Driving mode select switch .................... 271
M mode ............................................................. 181
Paddle shift switches ........................ 180, 181
Trip meters ........................................................ 80
Turn signal lights Replacing light bulbs ............................... 385
Turn signal lever .......................................... 182
Wattage ..........................................................449
U
USB charging ports.................................... 322