2019 LEXUS RX450H windshield

3924-6. Driving tips
RX450h_RX450hL_U
To enable the windshield wi pers to be lifted when heavy snow or icy conditions
are expected, change the rest position of the windshield wipers from the
retracted position below the hood to th e service position using the wiper lever.
(
P. 270)
■Tire chain installation
Observe the following precautions when installing and removing chains:
●Install and remove tire chains in a safe location.
●Install tire chains on the front tires only. Do not install tire chains on the rear tires.
●Install tire chains on front tires as tightly as possible. Retighten chains after driving
1/4 - 1/2 mile (0.5 - 1.0 km).
●Install tire chains following the instru ctions provided with the tire chains.
Windshield wipers
WARNING
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehi cle control and cause death or serious injury.
●Use tires of the specified size.
●Maintain the recommended level of air pressure.
●Do not drive in excess of 75 mph (120 km/h ), regardless of the type of snow tires
being used.
●Use snow tires on all, not just some wheels.
■Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being used, or
30 mph (50 km/h), whichever is lower.
●Avoid driving on bumpy road surfaces or over potholes.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations
that cause sudden engine braking.
●Slow down sufficiently before entering a cu rve to ensure that vehicle control is main-
tained.
●Do not use the LKA (Lane-Keeping Assist) system.

5086-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■Adjusting the temperature setting
Press to increase the temperature and to decrease the tem-
perature.
■Adjusting the fan speed setting
Press to increase the fan speed and to decrease the fan speed.
Press the “OFF” button to turn the fan off.
■Change the airflow mode
To change the air outlets, press .
The air outlets used are switched
each time the button is pressed. Air flows to the upper body.
Air flows to the upper body and
feet.
Air flows to the feet.
Air flows to the feet and the
windshield defogger operates.
■Other functions
●Switching between outside air and recirculated air modes ( P. 516)
●Defogging the windshield ( P. 516)
●Defogging the rear window and outside rear view mirrors ( P. 516)
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5106-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■Option control screen
Select on the air conditioning control screen to display the option
control screen. The functions can be switched on and off.
Prevent ice from building up on the windshield and wiper blades (if
equipped) ( P. 516)
Select to set S-FLOW mode ( P. 514)
■Side display operation screen (Vehicle s with a navigation system [12.3-inch
display])
Select the air flow mode
Adjust the left-hand side tem-
perature setting
Adjust the fan speed setting
Adjust the right-hand side tem-
perature setting
Select to set auto mode on/off
Select to set cooling and dehu-
midification function on/off
If the indicator is turned off, the system will blow ambient temperature air
or heated air.
Lexus Display Audio screenNavigation system screen
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5126-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■Option control screen
Select on the air conditioning control screen to display the option
control screen. The functions can be switched on and off.
Prevent ice from building up on the windshield and wiper blades (if
equipped) ( P. 516)
Select to set S-FLOW mode ( P. 514)
■Side display operation screen (Vehicle s with a navigation system [12.3-inch
display])
Select the air flow mode
Adjust the left-hand side tem-
perature setting
Adjust the fan speed setting
Adjust the right-hand side tem-
perature setting
Select to set auto mode on/off
Select to set cooling and dehu-
midification function on/off
If the indicator is turned off, the system will blow ambient temperature air
or heated air.
Adjust the temperature for driver, passenger and rear seats separately (“3-
ZONE” mode) ( P. 513)
Lexus Display Audio screenNavigation system screen
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5166-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■Switching between outside air and recirculated air modes
Type A
Press .
The mode switches between (recirculated air mode) and (outside
air mode) modes each time the button is pressed.
Type B
Press .
The mode switches between (recir culated air mode), automatic and
(outside air mode) modes each time the button is pressed.
When the system is switched to automatic mode, the air conditioning system oper-
ates automatically.
■Defogging the windshield
Defoggers are used to defog the wi ndshield and front side windows.
Press .
Set the outside/recirculated air mode button to outside air mode if the recirculated
air mode is used. (It may switch automatically.)
To defog the windshield and the side wind ows early, turn the air flow and tempera-
ture up.
To return to the previous mode, press again when the windshield is
defogged.
■Defogging the rear window and outside rear view mirrors
Defoggers are used to defog the rear window and to remove raindrops, dew
and frost from the outside rear view mirrors.
Press .
The defoggers will automatically turn off after a period of time.
■Windshield wiper de-icer (if equipped)
This feature is used to prevent ice fr om building up on the windshield and
wiper blades.
Select on the option control screen.
When the windshield wiper de-icer is on , is displayed on the air condition-
ing control screen.
The windshield wiper de-icer will automati cally turn off after a period of time.
Other functions

5196-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
6
Interior features
■When the outside temperature exceeds 75 F (24 C) and the air conditioning system
is on
●In order to reduce the air co nditioning power consumption, the air conditioning system
may switch to recirculated air mode automatically.
This may also reduce fuel consumption.
●Recirculated air mode is selected as a default mode when the power switch is turned to
ON mode.
●It is possible to switch to outside air mode at any time by pressing the outside/recircu-
lated air mode button.
■Automatic mode for air intake control
In automatic mode, the system detects exhaust gas and other pollutants and automati-
cally switches between outside air and recirculated air modes.
When the dehumidification function is off, and the fan is operating, turning automatic
mode on will activate the dehumidification function.
■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high. Selecting “A/C”
will dehumidify the air from the outlets and defog the windshield effectively.
●If you turn “A/C” off, the windows may fog up more easily.
●The windows may fog up if the recirculated air mode is used.
■Windshield fog detection function
When automatic mode is set, the humidity sensor ( P. 521) detects fog on the wind-
shield and controls the air cond itioning 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 air mode. This is effective in preventing out-
side air from enteri ng the vehicle interior. 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 performance, perform the following operations:
• Adjust the fan speed
• Turn off Eco drive mode

5206-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning 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. 625
■Customization
Some functions can be customized ( P. 736)
WARNING
■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 windshield or to the side of the front pillars
when the windshield wiper de-icer is on. (if equipped)
●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.

5216-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
6
Interior features
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.
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. 519)
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