2020 LEXUS RX450H air conditioning

5176-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_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. 618
■Customization
Some functions can be customized. ( P. 722)
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)
NOTICE
■To prevent battery discharge
Do not leave the air conditioni ng system on longer than necessary when the engine 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.

5186-2. Using the air conditioning system and defogger
RX350/RX350L_U
■Adjusting the temperature setting
Press to increase the temperat ure 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.
Rear automatic air cond itioning system (RX350L)
Air outlets and fan speed are automati cally adjusted according to the tem-
perature setting.
Control panel

5196-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U
■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.
■Using the automatic modePress the “AUTO” button
Adjust the temperature setting.
To stop the operation, press the “OFF” button.
■Automatic mode indicator
If the fan speed setting or air flow modes are operated, the automatic mode
indicator goes off. However, automati c mode for functions other than that
operated is maintained.
1
2
3
Air conditioning controls
1
2
3

5206-2. Using the air conditioning system and defogger
RX350/RX350L_U
■Location of air outlets
The air outlets and air volume
changes according to the selected
air flow mode.
■Adjusting the position of and opening and closing the air outlets
Adjusting the position of and open-
ing and closing the air outlets Direct air flow to the left or right,
up or down
Turn the knob fully to the back of
the vehicle to close the vent
Air outlets
1
2
NOTICE
■To prevent battery discharge
Do not leave the air conditioni ng system on longer than necessary when the engine is
off.

5216-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U
Heated steering wheel/seat heaters/seat ventila-
tors


: If equipped
Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively. Seat ventilators maintain good ventilation using
a fan built into the seats.
WARNING
●Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel and seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold
remedies, etc.)
●Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat heater.
• Do not use seat heater more than necessary.
NOTICE
●Do not put heavy objects that have an unev en surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat.
●To prevent battery discharge, do not us e the functions when the engine is off.

5226-2. Using the air conditioning system and defogger
RX350/RX350L_U
Turns the heated steering wheel on/off
The indicator light comes on when the
heated steering wheel is operating.
■Operation condition
The heated steering wheel can be used when the engine switch is in IGNITION ON
mode.
■Timer
The heated steering wheel will automati cally turn off after about 30 minutes.
When any switch is pressed, the system is set to automatic mode and the
“AUTO” indicator (green) lights up.
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The level indicator (amber) lights up
during operation.
■Operation condition
The front seat heaters can be used when the engine switch is in IGNITION ON mode.
■When the air conditioning system is operating in S-FLOW mode
If a passenger is not detected in the front pa ssenger seat, the seat heater of the front pas-
senger’s seat will be turned off if on. ( P. 511)
■Customization
Some functions can be customized. ( P. 722)
Heated steering wheel
Front seat heaters
Level
indicator
“AUTO”
indicator

5236-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U
Each time the switch is pressed, the operation condition changes as follows. Hi
(3 segments lit)  Mid (2 segments lit)  Lo (1 segment lit)  Off
The level indicator (amber) lights up during operation.
■Operation condition
The second-row seat heaters can be used when the engine switch is in IGNITION ON
mode.
When any switch is pressed, the system
is set to automatic mode and the
“AUTO” indicator (green) lights up.
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The level indicator (green) lights up
during operation.
■Operation condition
The seat ventilators can be used when the engine switch is in IGNITION ON mode.
■When the air conditioning system is operating in S-FLOW mode
If a passenger is not detected in the front passenger seat, the seat ventilator of the front
passenger’s seat will be turned off if on. (P. 511)
■Customization
Some functions can be customized. ( P. 722)
Second-row seat heaters
Type AType B
Level indicatorLevel indicator
Seat ventilators
Level
indicator
“AUTO”
indicator

575
7Maintenance and care
RX350/RX350L_U
7-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 576
Cleaning and protecting the vehicle interior................... 581
7-2. Maintenance Maintenance requirements ............................584
General maintenance..............586
Emission inspection and maintenance (I/M)
programs ....................................589
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions................................590
Hood ............................................... 592
Positioning a floor jack ............593
Engine compartment ............... 594
Tires .................................................604
Tire inflation pressure................ 613
Wheels ............................................ 616
Air conditioning filter ................ 618
Windshield wiper inserts ..........621
Electronic key battery .............. 623
Checking and replacing fuses .............................................. 625
Headlight aim .............................. 628
Light bulbs.....................................630