2016 LEXUS RX450H sensor

412 5-2. Using the air conditio ning system and defogger
RX450h_U_OM0E013U ■
Windshield fog detection function
When automatic mode is se t, the humidity sensor (  P. 413) detects fog on the wind-
shield and controls the air conditioning system to prevent fog. ■
Outside/recirculated air mode ●
When driving on dusty roads such as tunnels or in heavy traffic, set the outside/recircu-
lated air mode button to the recirculated ai r mode. This is effective in preventing out-
side air from entering the vehicle interi or. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively. ●
Outside/recirculated air mode may automa tically switch depending on the tempera-
ture setting or the inside temperature. ■
When the outside temperature is low
The dehumidification function may not operate even when “A/C” is selected. ■
Operation of the air conditioning system in Eco drive mode ●
In the Eco drive mode, the air conditioning sy stem is controlled as follows to prioritize
fuel efficiency
• Engine speed and compressor operation controlled to restrict heating/cooling
capacity
• Fan speed restricted when automatic mode is selected ●
To improve air conditioning performa nce, perform the following operations
• Adjust the fan speed
• Turn off Eco drive mode ■
Ventilation and air conditioning odors ●
To let fresh air in, set the air conditio ning system to the outside air mode.●
During use, various odors from inside and outside the vehicle may enter into and accu-
mulate in the air conditioning system. This may then cause odor to be emitted from the
vents. ●
To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode prior
to turning the vehicle off.
• The start timing of the blower may be dela yed for a short period of time immediately
after the air conditioning system is started in automatic mode.■
Air conditioning filter
 P. 5 0 1 ■
Customization
Some functions can be customized (  P. 6 0 7 )

4135-2. Using the air conditio ning system and defogger
5
Interior features
RX450h_U_OM0E013U WA R N I N G ■
To prevent the windshield from fogging up ●
Do not use during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outside air and that of the windshield can cause
the outer surface of the windshield to fog up, blocking your vision.
■
To prevent burns ●
Do not touch the rear view mirror surfaces when the outside rear view mirror defog-
gers are on. ●
Do not touch the glass at lower part of the wi ndshield or to the si de of the front pillars
when the windshield wiper de-icer is on. (if equipped)
NOTICE ■
Humidity sensor
■
To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the hybrid sys-
tem is off. ●
Do not place anything on the instrument
panel which may cover th e air outlets. Other-
wise, air flow may be obstructed, preventing
the windshield defoggers from defogging.
In order to detect fog on the windshield, a sen-
sor which monitors the temperature of the
windshield, the surround humidity, etc. is
installed. (  P. 4 1 2 )
Follow these points to avoid damaging the sen-
sor: ●
Do not disassemble the sensor ●
Do not spray the glass cleaner on the sensor
or subject it to strong impacts ●
Do not stick anything on the sensor

460 6-1. Maintenance and care
RX450h_U_OM0E013U WA R N I N G ■
When washing the vehicle
Do not apply water to the inside of the en gine compartment. Doing so may cause the
electrical components etc. to catch fire. ■
When cleaning the windshield
●
When the upper part of the windshield where the raindrop sensor is located is
touched by hand ●
When a wet rag or similar is held close to the raindrop sensor ●
If something bumps against the windshield ●
If you directly touch the raindrop sensor body or if something bumps into the raindrop
sensor ■
Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has cooled suffi-
ciently, as touching a hot exhaust pipe can cause burns. ■
Precautions regarding the rear bumper with Blind Spot Monitor
If the paint of the rear bumper is chipped or scratched, the syst em may malfunction. If
this occurs, consult your Lexus dealer.Set the wiper switch to off.
If the switch is in “AUTO”, the wipers may oper-
ate unexpectedly in the following situations,
and may result in hands being caught or other
serious injuries and cause damage to the wiper
blades.
Off

538 7-2. Steps to take in an emergency
RX450h_U_OM0E013U (If equipped)
PCS warning light
When the warning light flashes (and a buzzer sounds):
Indicates a malfunction in the PCS (Pre-Collision System)
 Have the vehicle inspected by your Lexus dealer immediately.
When the warning light flashes (and a buzzer does not sound):
Indicates that the PCS (Pre-Collision System) is temporarily
unavailable, possibly due to either of the following:
• An area around the radar sensor or camera sensor being dirty,
fogged up or covered with co ndensation, ice, stickers, etc.
 Clear the dirt, fog, condensation, ice, stickers, etc.
(  P. 274, 275)
• Radar sensor or camera sensor temperature being outside of its
operational range
 Wait for a while until the area around the front sensor has cooled
down sufficiently.
When the warning ligh t is illuminated:
Either the VSC (Vehicle Stability Control) system or PCS (Pre-
Collision System) is disabled or both are disabled.
 To enable the PCS, enable both the VSC system and PCS.
(  P. 283, 384)
Low fuel level warning light
Indicates that remaining fuel is approximately 2.9 gal. (11.0 L,
2.4 Imp. gal.) or less
 Refuel the vehicle.
Seat belt reminder light (warning buzzer)
*Warns the driver and/or front passenger to fasten their seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s
seat belt also needs to be fa stened to make the warning light
(warning buzzer) turn off.
Tire pressure warning light
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. 5 4 0 )
Master warning light
A buzzer sounds and the warning light comes on and flashes to
indicate that the master warning system has detected a malfunc-
tion.
 P. 5 4 3Warning light Warning light/Details/Actions

5397-2. Steps to take in an emergency
7
When trouble arises
RX450h_U_OM0E013U * : 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 power switch is turned to ON mode, the buzzer sounds for
6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds
once. If the seat belt is st ill unfastened after 24 second s, the buzzer will sound inter-
mittently for 10 seconds. Then, if the seat be lt is still unfastened, the buzzer will sound
in a different tone 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. The 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. ■
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 swit ch, 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 pretensioner, front passenger’s seat belt
pretensioner and force limiter, airbags, in terconnecting wiring and power sources.
(  P. 3 8 ) ■
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 th e seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly. ■
Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient of the voltage temporarily drops,
the electric power steering system warnin g light may come on and the warning buzzer
may sound. ■
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.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.

6098-2. Customization
8
Vehicle specifications
RX450h_U_OM0E013U ■
Power back door (  P. 1 4 2 )
* :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
Sound pattern of the buzzer
when the power back door
begins to operate Sound pattern A Sound pattern B
— O
Sound pattern C
Touchless sensor
* sensitivity Level 1 (standard) Level 1 (standard) to
level 3 (highest) — O 1 2

614 8-2. Customization
RX450h_U_OM0E013U ■
Tu r n s i g n a l l e v e r (  P. 244)
■
Automatic light control system (  P. 2 5 1 )
■
Lights ( 
P. 2 5 1 )
* 1
: Except for Canada
* 2
:If equipped ■
Rain-sensing windshield wipers ( 
P. 2 6 0 )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
We l c o m e l i g h t i n g On Off — O
AFS (Adaptive Front-lighting
System)
* 2
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

6158-2. Customization
8
Vehicle specifications
RX450h_U_OM0E013U ■
Intuitive parking assist (  P. 3 3 9 )
* : When intuitive parking assist is operating.■
BSM (Blind Spot Monitor) (  P. 363)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
* 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