air conditioning Lexus ES300h 2015 Playing an audio CD and MP3/WMA/AAC discs / (OM33B99U) Owner's Guide

4706-1. Using the air conditioning system and defogger
ES350_300h_OM_OM33B99U_(U)
■Switching between outside air and recirculated air modes
Press .
The mode switches among (recirculated air mode), automatic and (outside air mode) modes each time the button is pressed.
When the system is switched to auto matic mode, the air conditioning system
operates automatically.
■Defogging the windshield
Defoggers are used to defog the windshield and front side windows.
Press .
Set to outside air mode if the recirculated air mode is used. (It
may switch automatically.)
To defog the windshield and the side windows early, turn the air flow and tem-
perature 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 tu rn off after a period of time.
Other functions

ES350_300h_OM_OM33B99U_(U)
4716-1. Using the air conditioning system and defogger
6
Interior features
■Micro dust and pollen filter
Pollen is removed from the air and the air flows to the upper part of the
body.
Select on the option control screen.
When the micro dust and pollen filter is on, is displayed on the air condi-
tioning control screen.
In order to prevent the windshield from fogging up when the outside air is cold,
the dehumidification function may operate.
The pollens are filtered out even if the mi cro dust and pollen filter is turned off.
■Windshield wiper de-icer (if equipped)
This feature is used to prevent ice from 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 condi-
tioning control screen.
The windshield wiper de-icer will automati cally turn off after a period of time.
■Location of air outlets
The air outlets and air volume
changes according to the
selected air flow mode.
Air outlets

4726-1. Using the air conditioning system and defogger
ES350_300h_OM_OM33B99U_(U)
■Adjusting the position of and opening and closing the air outlets
Direct air flow to the left or right, up or down.
Turn the knob to open or close the vent.
■Registering air conditioning settings to electronic keys
●Unlocking the vehicle using an electronic key and turning the “START STOP
ENGINE” <“POWER”> switch to IGNITION ON mode will recall that key’s
registered air conditioning settings.
●When the “START STOP ENGINE” <“POWER”> switch is turned off, the current
air conditioning settings will automaticall y be registered to the electronic key that
was used to unlock the vehicle.
The system may not operate correctly if more than one electronic key is in the vicinity
or if the smart access system is used to unlock a passenger door.
Settings for the electronic key and th e corresponding door can be changed.
Contact your Lexus dealer.
FrontRear
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ES350_300h_OM_OM33B99U_(U)
4736-1. Using the air conditioning system and defogger
6
Interior features
■Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow immedi-
ately after the “AUTO” button is pressed or “AUTO” is selected.
■When the outside temperature exceeds 75 F (24C) and the air conditioning sys-
tem is on
●In order to reduce the air conditioning 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 “START STOP
ENGINE” <“POWER”> switch is turn ed to IGNITION ON mode.
●It is possible to switch to outside air mode at any time by pressing .
■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high. Selecting
“A/C” on the option control screen 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 (if equipped)
When automatic mode is set, the humidity sensor ( P. 476) detects fog on the
windshield 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 to
the recirculated air mode. This is effectiv e in preventing outside air from entering
the vehicle interior. During cooling operation, setting the recirculated air mode will
also cool the vehicle interior effectively.
●Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.
■When the outside temperature is low
The dehumidification function may not operate even when “A/C” on the option con-
trol screen is selected.

4746-1. Using the air conditioning system and defogger
ES350_300h_OM_OM33B99U_(U)
■Automatic mode for air intake control
In automatic mode, the system detects exhaust gas and other pollutants and auto-
matically 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.
■Micro dust an d pollen filter
●In order to prevent the windshield from fogging up when the outside air is cold, the
following may occur:
• Outside air mode does not switch to (recirculated air) mode.
• The dehumidification function operates.
• The operation cancels after approximately 1 minute.
●In rainy weather, the windows may fog up. Press .
●In extremely humid weather, the windows may fog up.
●The pollens are filtered out even if the mi cro dust and pollen filter is turned off.
■Operation of the air conditioning system in Eco drive mode
●In the Eco drive mode, the air conditioning system is controlled as follows to priori-
tize fuel efficiency
• Engine speed and compressor operation co ntrolled 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 conditioning system to the outside air mode.
●During use, various odors from inside an d outside the vehicle may enter into and
accumulate in the air condit ioning system. This may then cause odor to be emitted
from the vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditio ning system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time immedi- ately after the air conditioning system is started in automatic mode.

ES350_300h_OM_OM33B99U_(U)
4756-1. Using the air conditioning system and defogger
6
Interior features
■Air conditioning filter
P. 5 8 2
■Customization
Settings (e.g. A/C automatic mode sw itch operation) can be changed.
(Customizable features: P. 7 3 9 )
CAUTION
■To prevent the windshield from fogging up
●Do not use during cool air operation in extremely humid weather. The dif-
ference between the temperature of the outside air and that of the windshield can
cause the outer surface of the windshie ld to fog up, blocking your vision.
■To prevent burns
●Do not touch the rear view mirror surfaces when the outside rear view mirror
defoggers are on.
●Do not touch the glass at lower part of th e windshield or to the side of the front
pillars when the windshield wiper de-icer is on. (vehicles with windshield wiper
de-icer)
●Do not place anything on the instrument
panel which may cover the air outlets. Oth-
erwise, air flow may be obstructed, pre-
venting the windshield defoggers from
defogging.

4766-1. Using the air conditioning system and defogger
ES350_300h_OM_OM33B99U_(U)
NOTICE
■Humidity sensor (if equipped)
●Do not spray the glass cleaner on the sensor or subject it to strong impacts
●Do not stick anything on the sensor
■To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is off.
In order to detect fog on the windshield, a
sensor which monitors the temperature of
the windshield, the surround humidity, etc. is
installed. (P. 4 7 3 )
Follow these points to avoid damaging the
sensor:
●Do not disassemble the sensor

477
ES350_300h_OM_OM33B99U_(U)
6-1. Using the air conditioning system and defogger
6
Interior features
Heated steering wheel/seat heaters/
seat ventilators


: If equipped
Heated steering wheel and seat heaters heat the side grips of the steer-
ing wheel and seats, respectively. Seat ventilators maintain good air-
flow by blowing air from the seats.
CAUTION
●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, nail s, etc.) into the seat.
●To prevent 12-volt battery discharge, do not use the functions when the hybrid
system is off.

4786-1. Using the air conditioning system and defogger
ES350_300h_OM_OM33B99U_(U)
Turns the heated steering wheel on/
off
The indicator light comes on when the
heated steering wheel is operating.
●The heated steering wheel can be used when the “START STOP ENGINE”
<“POWER”> switch is in IGNITION ON mode.
●The heated steering wheel will automatically turn off after about 30 minutes.
Heats the seat
The indicator light comes on.
The higher the number of dots, the
warmer the seat becomes.
Blows air from the seat
The indicator light comes on.
The higher the number of dots, the
stronger the airflow becomes.
The seat heaters and ventilators can be used when the “START STOP ENGINE”
<“POWER”> switch is in IGNITION ON mode.
Heated steering wheel
Seat heaters and ventilators
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ES350_300h_OM_OM33B99U_(U)
7Maintenance and care
7-1. Maintenance and careCleaning and protecting the vehicle exterior................. 522
Cleaning and protecting the vehicle interior .................. 526
7-2. Maintenance Maintenance requirements............................. 529
General maintena nce .............. 532
Emission inspection and maintenance (I/M)
programs .................................... 536
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ................................ 537
Hood ................................................ 541
Positioning a floor jack ............. 542
Engine compartment ............... 545
12-volt battery (hybrid vehicles) ...................... 562
Tires .................................................. 566
Tire inflation pressure ................577
Wheels .......................................... 580
Air conditioning filter ...............582
Electronic key battery ..............584
Checking and replacing fuses ..............................................586
Light bulbs.....................................598