2020 LEXUS RX350 sensor

4177-2. Steps to take in an emergency
7
When trouble arises
or her seat belt is not fastened. The buzzer sounds for 6 seconds after the vehicle reaches a
speed of 12 mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound in
a different tone for 24 more seconds.
■Tire pressure warning light
■LTA indicator (warning buzzer)
■Intuitive parking assist OFF indicator (warning buzzer)
■RCTA OFF indicator (warning buzzer)
Warning lightDetails/Actions
Indicates the following:
 Low tire pressure due to flat tire;
 Low tire pressure due to natural causes; or
 The tire pressure warning system is malfunctioning
 Immediately stop the vehicle in a safe place.
Handling method ( P.420)
Warning lightDetails/Actions
(orange)
Indicates a malfunction in th e LTA (Lane Tracing Assist)
 Follow the instructions displayed on the multi-information display.
(  P.226)
Warning lightDetails/Actions
(flashes)
(if equipped)
Indicates a malfunction in the in tuitive parking assist function
 Have the vehicle inspected by your Lexus dealer immediately.
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.
 Follow the instructions displayed on the multi-information display.
(  P.249)
Warning lightDetails/Actions
(flashes)
(if equipped)
Indicates a malfunction in the RCTA (Rear Cross Traffic Alert) function
 Have the vehicle inspected by your Lexus dealer immediately.
Indicates that the rear bumper around the radar sensor is covered with
dirt, etc. ( P.242)
 Follow the instructions displayed on the multi-information display.
(  P.254)

4187-2. Steps to take in an emergency
■PKSB OFF indicator (warning buzzer)
■PCS warning light
■Slip indicator
Warning lightDetails/Actions
(flashes)
(if equipped)
When a buzzer sounds:
Indicates a malfunction in the PK SB (Parking Support Brake) system
 Have the vehicle inspected by your Lexus dealer immediately.
When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.
 Follow the instructions displayed on the multi-information display.
(  P.263, 422)
Warning lightDetails/Actions
(flashes or illumi-
nates)
When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Collision System).
 Have the vehicle inspected by your Lexus dealer immediately.
When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily unavailable,
corrective action may be necessary.
 Follow the instructions displayed on the multi-information display.
(  P.209, 425)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control)
system is disabled, the PCS warning light will illuminate.
 P.217
Warning lightDetails/Actions
When the warning light is illuminated:
Indicates a malfunction in:
The VSC system;
 The TRAC system;
 The Trailer Sway Control; or
 The hill-start assist control system;
 Have the vehicle inspected by your Lexus dealer immediately.
When the warning light flashes:
Indicates that the VSC, TRAC or Tra iler Sway Control system is operat-
ing

4197-2. Steps to take in an emergency
7
When trouble arises
■Parking brake indicator
■Brake hold operated indicator
■Master warning light
■Warning buzzer
In some cases, the bu zzer may not be heard
due to being in a noisy location or audio
sound.
■Front passenger detection sensor, seat
belt reminder and warning buzzer
●If luggage is placed on the front passen-
ger seat, the front passenger detection
sensor may cause th e warning light to
flash and the warning buzzer to sound
even if a passenger is not sitting in the
seat.
●If a cushion is placed on the seat, the sen-
sor may not detect a passenger, and the
warning light may not operate properly.
■SRS warning light
This warning light system monitors the air- bag sensor assembly, fr
ont impact sensors,
side impact sensors (front door), side
impact sensors (rear), driver’s seat position
sensor, driver’s seat belt buckle switch, front
passenger occupant classification system
(ECU and sensors), “AIR BAG ON” indica-
tor light, “AIR BAG OFF” indicator light,
front passenger’s seat belt buckle switch,
driver’s seat belt pr etensioner, front passen-
ger’s seat belt pretensioner and force lim-
iter, airbags, interconnecting wiring and
power sources. ( P.30)
■If the malfunction indicator lamp comes
on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
Warning lightDetails/Actions
(flashes) (U.S.A.)
or
(flashes)
(Canada)
It is possible that the parking brake is not fully engaged or released
 Operate the parking brake switch once again.
This light comes on when the parking brake is not released. If the light
turns off after the parking brake is fu lly released, the system is operating
normally.
Warning lightDetails/Actions
(flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
A buzzer sounds and the warning light comes on and flashes to indicate
that the master warning system has detected a malfunction.
P.422

4738-2. Customization
8
Vehicle specifications
■Power back door (P.101)
*:If equipped
■Smart access system with push-button start and wireless remote control
( P.97, 113)
■Smart access system with push-button start ( P.97, 113)
FunctionDefault settingCustomized setting
Power back doorOnOff—O—
Power back door opening
position51 to 5O——
Buzzer volumeLevel 3Level 1—O—Level 2
Kick sensor*OnOff—O—
Hands free close & lock func-
tion
*OffOn——O
FunctionDefault settingCustomized setting
Operation buzzer volume5OffO—O1 to 7
Operation signal (Emergency
flashers)OnOffO—O
Time elapsed before automatic
door lock function is activated
if door is not opened after
being unlocked
60 seconds
Off
O—O30 seconds
120 seconds
Open door warning buzzerOffOn——O
Reservation lockOnOff——O
FunctionDefault settingCustomized setting
Smart access system with
push-button startOnOff——O
ABC
ABC
ABC

4778-2. Customization
8
Vehicle specifications
■Turn signal lever (P.184)
■Automatic light control system ( P.190)
■Lights ( P.190)
*1:Except for Canada
*2: If equipped
■Rain-sensing windshield wipers* ( P.196)
*:If equipped
FunctionDefault settingCustomized setting
The number of times the turn
signal lights flash automatically
when the turn signal lever is
moved to the first position
during a lane change
3
5
——O7
Off
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Time elapsed before head-
lights automatically turn off
after doors are closed
30 seconds
Off
O—O60 seconds
90 seconds
FunctionDefault settingCustomized setting
Daytime running lightsOnOff*1O—O
Welcome lightingOnOff——O
AFS (Adaptive Front-lighting
System)
*2OnOff——O
Windshield wiper linked head-
light illuminationOnOff——O
FunctionDefault settingCustomized setting
Wiper operation when the
wiper switch is in the “AUTO”
positionRain-sensing opera-
tion
Intermittent opera-
tion linked to vehicle speed (with interval adjuster)
——O
ABC
ABC
ABC
ABC

4808-2. Customization
■PKSB (Parking Support Brake)* ( P.258)
*:If equipped
■Driving mode select switch ( P.274)
*:If equipped
■Front automatic air conditioning system ( P.296)
*:If equipped
■Seat heaters*/seat ventilators* ( P.310)
*: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

501What 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.181)
It is locked automatically to prevent
theft of the vehicle. ( P.177)
 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.147)
 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.179)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.416)
 The parking brake indicator is on
Is the parking brake released? ( P.185)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.413, 422)
 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.422)
 When a warning light turns on or a
warning message is displayed, refer
to P.413, 422.
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

504Alphabetical Index
Warning light .................................................413
Brake assist .....................................................277
Break-in tips..................................................... 157
Brightness control Instrument panel light control ................ 78
BSM (Blind Spot Monitor)....................... 239
Buzzer Hands off steering wheel warning (LTA)......................................................................... 226
C
Care Aluminum wheels ..................................... 350
Exterior .......................................................... 350
Interior ............................................................. 353
Seat belts........................................................ 353
Cargo capacity...................................... 161, 164
Cargo hooks ................................................. 322
Cargo net hooks .......................................... 322
Center Display ............................................. 292
Chains .............................................................. 284
Child restraint system Fixed with a LATCH system .................. 54
Fixed with a seat belt...................................50
Front passenger occupant 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 ......................370, 446
Child restraint system................................. 46
Heated steering wheel and seat heater precautions................................................. 310
How your child should wear the seat belt .............................................................................27
Moon roof precautions ............................149
Panoramic moon roof precautions ....152
Power back door precautions............... 101 Power window lock switch .....................147
Power window precautions .................. 146
Rear door child-protectors ................... 100
Removed electronic key battery precau-
tions .............................................................. 390
Seat belt extender precautions.............. 27
Seat belt precautions .................................. 45
Child-protectors........................................... 100
Cleaning Aluminum wheels ..................................... 350
Exterior........................................................... 350
Interior .............................................................353
Radar sensor ............................................... 205
Seat belts ........................................................353
Clock ........................................................ 75, 336
Coat hooks..................................................... 336
Coin box............................................................321
Compass ......................................................... 346
Condenser ..................................................... 368
Console box ................................................... 318
Consumption screen .................................... 90
Cooling system............................................. 367 Engine overheating................................... 447
Cornering lights .............................................192 Replacing light bulbs ............................... 395
Cruise control Dynamic radar cruise control with full-speed range ......................................230
Cup holders .....................................................319
Current fuel consumption .......................... 80
Curtain shield airbags .................................. 30
Customizable features .............................. 470
D
Daytime running light system .................. 190
Defogger Outside rear view mirrors.................... 298
Rear window ............................................... 298
Windshield ................................................... 298
Differential Rear differential oil......... ..................... ...... 456
Dimension ...................................................... 452