2019 LEXUS RX350 sensor

6578-2. Steps to take in an emergency
8
When trouble arises
RX350/RX350L_U * 1
: Driver's and front passenger's seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt
is not fastened. Once the engine switch is turned to IGNITION ON mode, the
buzzer sounds for 6 seconds. If the vehicl e reaches a speed of 12 mph (20 km/h), the
buzzer sounds once. If the seat belt is still unfastened afte r 24 seconds, the buzzer will
sound intermittently for 10 se conds. Then, if the seat belt is still unfastened, the buzzer
will sound in a different to ne for 20 more seconds.
The front passenger’s seat belt warning buzzer sounds to alert the front passenger
that his or her seat belt is not fastened. Th e buzzer sounds once if the vehicle reaches
a speed of 12 mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the
buzzer will sound intermittently for 10 seconds. Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 20 more seconds.
* 2
: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt warning bu zzer sounds to alert the rear passengers
that his or her seat belt is not fastened. The buzzer so unds for 6 seconds after the
vehicle reaches a speed of 20 km/h (12 mph). Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 24 more seconds. ■
SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (front door), side impact se nsors (rear), driver’s seat position sensor,
driver’s seat belt buckle sw itch, front passenger occupant classification system (ECU and
sensors), “AIR BAG ON” indicator light, “A IR BAG OFF” indicator light, front passen-
ger’s seat belt buckle switch, driver’s seat belt pretension er, front passenger’s seat belt
pretensioner and force limiter, airbags, in terconnecting wiring and power sources.
(  P. 36) ■
Front passenger detection sensor, seat belt reminder and warning buzzer●
If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.●
If a cushion is placed on the seat, the sens or may not detect a passenger, and the warn-
ing light may not operate properly. ■
Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficien t or the voltage temporarily drops, the
electric power steering system warning li ght may come on and the warning buzzer may
sound. Master warning light
A buzzer sounds and the warning light comes on and flashes to
indicate that the master warnin g system has dete cted a malfunc-
tion.
 P. 661Warning light Warning light/Details/Actions

7259-2. Customization
9
Vehicle specifications
RX350/RX350L_U ■
Power back door (  P. 130)
* : 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

730 9-2. Customization
RX350/RX350L_U ■
Turn signal lever (  P. 246)
■
Automatic light control system (  P. 252)
■
Lights ( 
P. 252)
* 1
:Except for Canada
* 2
: If equipped
■
Rain-sensing windshield wipers
* ( 
P. 261)
* : If equipped Function Default setting Customized setting
The number of times the turn sig-
nal lights flash automatically
when the turn signal lever is
moved to the first position during
a lane change 3 5
— O7
Off 1 2
Function Default setting Customized setting
Light sensor sensitivity Standard -2 to 2 O O
Time elapsed before headlights
automatically turn off after doors
are closed 30 seconds Off
OO
60 seconds
90 seconds 1 2
Function Default setting Customized setting
Daytime running lights On Off
* 1
O O
Welcome lighting On Off — O
AFS (Adaptive Front-lighting
System)
* 2
On Off — O
Windshield wiper linked head-
light illumination On Off — O 1 2
Function Default setting Customized setting
Wiper operation when the wiper
switch is in the “AUTO” position Rain-sensing oper-
ation Intermittent opera-
tion linked to vehi-
cle speed (with
interval adjuster) — O 1 2

7319-2. Customization
9
Vehicle specifications
RX350/RX350L_U ■
Intuitive parking assist
* 1
(  P. 326)
* 1
: If equipped
* 2
: When intuitive parking assist is operating. ■
BSM (Blind Spot Monitor)
* (  P. 313)
* : If equipped Function Default setting Customized setting
Detection distance of the front
center sensor Far Near O O
Detection distance of the rear
center sensor Far Near O O
Buzzer volume 3 1 to 5 O O
Display setting
* 2
All sensors dis-
played Display off O O 1 2
Function Default setting Customized setting
Outside rear view mirror indica-
tor brightness Bright Dim O O
Alert timing for presence of
approaching vehicle (BSM func-
tion only) Intermediate Early
O OLate
Only when in blind
spot
RCTA buzzer volume Level 2 Level 1
O —
Level 3 1 2

732 9-2. Customization
RX350/RX350L_U ■
Driving mode select switch (  P. 373)
* : If equipped ■
Front automatic air conditioning system (  P. 503)
* : If equipped■
Seat heaters
* /seat ventilators
* (  P. 522, 523)
* : If equipped Function Default setting Customized setting
Powertrain control in customized
mode
* Normal Power
O —
Eco
Chassis control in customized
mode
* Normal Sport O —
Air conditioning operation in
customized mode
* Normal Eco O — 1 2
Function Default setting Customized setting
A/C auto switch operation On Off O O
Exhaust gas sensor sensitivity
* Standard -3 to 3 O O 1 2
Function Default setting Customized setting
Driver’s seat temperature prefer-
ence in automatic mode Standard -2 (cooler) to 2
(warmer) O O
Front passenger’s seat tempera-
ture preference in automatic
mode Standard -2 (cooler) to 2
(warmer) O O 1 2

754 What to do if... (Troubleshooting)
RX350/RX350L_U ●
The seat belt reminder light is flashing
Are the driver and the passengers wearing the seat belts?
(  P. 656, 656)●
The parking brake indicator is on
Is the parking brake released? (  P. 247)
Depending on the situation, other type s of warning buzzer may also sound.
(  P. 654, 661) ●
Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (  P. 77)
Do one of the following to stop the alarms: • Unlock the doors.
• Turn the engine switch to ACCESSORY or IGNITION ON mode, or start the
engine.
●
Is the message displayed on the multi-information display?
Check the message on the multi-information display. (  P. 661)
●
When a warning light turns on or a wa rning message is displayed, refer to
P. 654, 661. 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

770 Alphabetical index
RX350/RX350L_U S-FLOW mode ........................................ 511
Seat belts..................................................... 32
Adjusting the seat belt ........................ 32
Automatic Locking Retractor......... 33
Child restraint system
installation ..............................................55
Cleaning and maintaining the
seat belt .............................................. 582
Emergency Locking Retractor ...... 33
How to wear your seat belt ............. 32
How your child should
wear the seat belt .............................. 33
Pregnant women, proper seat
belt use.................................................... 34
Reminder light and buzzer .......... 656
Seat belt extender................................. 33
Seat belt instructions for
Canadian owners...........................739
Seat belt pretensioners ...................... 33
SRS warning light.............................. 654
Seat position memory........................... 172
Seat ventilators ...................................... 523
Seating capacity......................................213 Seats
Adjustment..............................................156
Adjustment precautions...................156
Child seats/child restraint
system installation ............................. 55
Cleaning.................................................. 581
Driving position memory................. 172
Folding down the rear
seatbacks ............................................. 157
Front seat heaters.............................. 522
Head restraint........................................ 177
Power easy access system ............. 172
Properly sitting in the seat ................ 30
Second-row seat heaters .............. 523
Seat position memory ....................... 172
Seat ventilators.................................... 523
Sensor
Automatic headlight system ........ 254
Camera sensor................................... 276
Inside rear view mirror..................... 183
Intuitive parking assist...................... 326
Radar sensor........................................ 276
Rain-sensing windshield
wipers................................................... 263
Touchless sensor ................................. 132S